User:Mrshaba/Glossary of solar energy terms

From Wikipedia, the free encyclopedia

[edit] Glossary of solar energy terms

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

WP:LIST#Types of lists
[1]
[2] - List of glossaries
[3] - Glossary of WP terms
Energy Dictionary: [4]

Working notation ordering

Also known as
See
Compare
From
Note Not to be confused with xxx, not always hyphenated, plural xxx.

Manual of style [5]
These higher temperatures are the result of urban materials such as concrete and asphalt that have lower albedos and higher heat capacities than the natural environment.
Question on pop ups [6]

[edit] Abbreviations

A - load current, rated module current

AC - alternating current 1

Ah or AH - ampere-hour 1

AIC - amperage interrupt capability 1

ASRAE -

B - boron 1

BIPV - building integrated photovoltaics

BOS - balance of system 1

Btu - British thermal unit 1

C - capacity 1

Cd - cadmium 1

CdTe - cadmium telluride 1

CIGS - copper indium gallium selenium

CLEFT - cleavage of lateral epitaxial films for transfer 1

CVD - chemical vapor deposition 1

DC - direct current 1

DER - distributed energy resource 1

DHW - domestic hot water 1

DOD - depth of discharge

EFG - edge defined film fed growth

Eg - band gap energy 1

eV - electron volt

Ga - gallium

GaAs - gallium arsenide

GJ - gigajoule

GW - gigawatt

Isc - short-circuit current

kW - kilowatt

kWh - kilowatt-hour

L - langley

LVC - low voltage cutoff

MPP - maximum power point

MPPT - maximum power point tracker

MW - megawatt hour

NEC - National Electrical Code

NEMA - National Electrical manufacturers Association

NOCT - normal operating cell temperature

Imp - current at maximum power

PV - photovoltaic 1

Voc - open-circuit voltage

P - Phosphorous

PF - power factor

P-I-N - see xxx

PV/T - photovoltaic-thermal

R - resistance

RMS - root mean square

Si - silicon

SMES - superconducting magnetic energy storage

SPS - satellite power system

SRC - standard reporting conditions

STC - standard test conditions

TC - tray cable

TPV - thermophotovoltaic cell

UF - underground feeder

UPS - uninterruptible power supply

V - volt

VMJ - vertical multijunction cell

Vmp - voltage at maximum power

[edit] !-9

[edit] 2/3 Power Law

An informal rule of thumb which states the price per unit of power increases at two thirds the rate of the power plant’s size (i.e. tripling the size of a power plant would double the price).

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] A

[edit] Absorber

^[1]^:161

[edit] absorptance

^[2]^:161

Also known as absorptivity.

[edit] absorption

The transfer of energy from high-speed particles and electromagnetic radiation to matter.

[edit] absorption air conditioner

^[3]^:19

[edit] absorption chiller

^[4]^:161

[edit] absorption curve

^[5]^:19

[edit] absorption refrigeration cycle

^[6]^:1

[edit] absorptivity - α

A material property which describes the percentage of radiant flux or luminous flux a body will absorb.^[7]^:20

Also known as absorption factor.

See emissivity, reflectivity, selectivity, transmissivity, black body.

[edit] acceptor

A dopant material, such as boron, which has fewer outer shell electrons than required in an otherwise balanced crystal structure, providing a hole, which can accept a free electron.

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] activated shelf life

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] activation voltage

http://www1.eere.energy.gov/solar/solar_glossary.html

Methods of capturing, converting and distributing sunlight that use mechanical components such as tracking mechanisms, pumps, and fans to process sunlight into usable outputs such as heating, lighting or electricity.^[8]^:22

Compare passive solar.

[edit] adiabatic cooling/evaporative cooling

^[9]^:161

[edit] adjustable set point

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] adsorption

^[10]^:161

[edit] adsorption chiller

^[11]^:161

[edit] Aerogel

^[12]^:161

[edit] air change

^[13]^:161 ^[14]^:655

[edit] air collector

^[15]^:161

[edit] air mass - AM

^[16]^:161

(sometimes called air mass ratio) — Equal to the cosine of the zenith angle-that angle from directly overhead to a line intersecting the sun. The air mass is an indication of the length of the path solar radiation travels through the atmosphere. An air mass of 1.0 means the sun is directly overhead and the radiation travels through one atmosphere (thickness). http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] air-only system

^[17]^:161

[edit] air system

http://www.solarexpert.com/Glossary.html

[edit] air velocity

^[18]^:161

[edit] air-type collector

[edit] air system

http://www.solarexpert.com/Glossary.html

[edit] albedo

definitely ^[19]^:655

[edit] alternating current - AC

^[20]^:28

[edit] alternating current

[edit] altitude

http://www.solarexpert.com/Glossary.html

[edit] ambient temperature

http://www.solarexpert.com/Glossary.html

The temperature of the surrounding area. http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] amorphos semiconductor

A non-crystalline semiconductor material that has no long-range order. http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] amorphous silicon

^[21]^:164 A thin-film, silicon photovoltaic cell having no crystalline structure. Manufactured by depositing layers of doped silicon on a substrate. See also single-crystal silicon an polycrystalline silicon. http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] amperage interrupt capability

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] ampere - A

The SI unit for rate of flow of electric charge. An ampere is produced in a circuit by one volt acting through a resistance of one ohm. An ampere is a current of one coulomb per second.^[22]^:28

Ampere = Voltage x Resistance

Also known as amp.

[edit] ampere-hour - Ah or AH

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] angle of incidence

definitely ^[23]^:655

— The angle that a ray of sun makes with a line perpendicular to the surface. For example, a surface that directly faces the sun has a solar angle of incidence of zero, but if the surface is parallel to the sun (for example, sunrise striking a horizontal rooftop), the angle of incidence is 90°. http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] annual load fraction

^[24]^:30

[edit] apparent day

^[25]^:32

[edit] array

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] array current

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] array operating voltage

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] ASHRAE

http://www.solarexpert.com/Glossary.html

[edit] attenuation

^[26]^:38

[edit] attenuation factor

^[27]^:38

[edit] autonomous system

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] auxilliary heat

http://www.solarexpert.com/Glossary.html

[edit] availability

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] available daylighting

^[28]^:161

[edit] availability factor

The percentage of time a power plant is ready to deliver power.

Compare capacity factor.

[edit] average demand

^[29]^:39

[edit] avoided cost

The price of electricity purchased from qualifying facilities. Avoided cost is based upon the costs a utility would realize if it produced the electricity itself.

See PURPA.

[edit] A/V-ratio

^[30]^:161

[edit] azimuth - Ф

definitely ^[31]^:405

Also known as azimuth angle.

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] B

[edit] balance of system - BOS

Represents all components and costs other than the photovoltaic modules/array. It includes design costs, land, site preparation, system installation, support structures, power conditioning, operation and maintenance costs, indirect storage, and related costs. http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] band gap

In a semiconductor, the energy difference between the highest valence band and the lowest conduction band.

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] band gap energy - Eg

The amount of energy (in electron volts) required to free an outer shell electron from its orbit about the nucleus to a free state, and thus promote it from the valence to the conduction level.

[edit] barrel

^[32]^:42

[edit] barrel of oil equivalent - bboe or BOE

A reference value used to compare the energy content of a barrel of oil to other energy carriers. A barrel of oil equivalent is equal to 1,456 megacalories (6,098 MJ).

Note locally relevant conversion factors are in extensive use.

See coal equivalent, ton of oil equivalent.

[edit] barrier energy

The energy given up by an electron in penetrating the cell barrier; a measure of the electrostatic potential of the barrier. http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] base load

The minimum expected gas or electrical demand during a given time period.^[33]^:43

DOE's definition:The average amount of electric power that a utility must supply in any period.http://www1.eere.energy.gov/solar/solar_glossary.html

Also known as base demand.

Compare peak load.

[edit] base load power plant

Also known as base load plant, or base load power station.

[edit] baseload capacity

Electric generating equipment which operates continuously.

Compare peaking capacity.

[edit] battery

^[34]^:44

[edit] battery available capacity

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] battery capacity

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] battery cell

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] battery cycle life

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] battery energy capacity

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] battery energy storage

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] battery life

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] blackbody

A theoretical object that absorbs all incident radiation.^[35]^:52

See emissivity, reflectivity, selectivity, transmissivity.

Compare gray body, white body.

[edit] blocking diode

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] boron - B

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] boule

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] British thermal unit - Btu

^[36]^:60

[edit] building energy ratio

possible ^[37]^:61

[edit] building integrated photovoltaics - BIPV

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] bushel

A unit of volume (9.318 gallons) used to measure grains and produce.

bushel corn, milo = 56 pounds

bushel soybeans, potatoes = 60 pounds

bushel sunflowers = 25 pounds

[edit] bypass diode

^[38]^:161

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] C

[edit] cadmium - Cd

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] cadmium telluride - CdTe

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] California Energy Commission - CEC

A California state agency created in 1974 and tasked with the planning of energy policy.

[edit] California Environmental Quality Act - CEQA

Legislation enacted in 1970, and since revised, which outlines the requirements of environmental impact statements and their review.

[edit] California Public Utilities Commission - CPUC

A California state agency create in 1911 which regulates private utilities.

[edit] California Utility Research Council - CURC

A body which coordinates energy research and policy between the California Energy Commission, the California Public Utilities Commission and investor-owned utilities.

[edit] calorie - cal or cal15

The energy required to raise the temperature of 1 gram of water from 14.5 to 15.5 degrees Celsius (4.1868 joules).^[39]^:64

Also known as small calorie, gram calorie.

See Energy.

[edit] Calorie - Cal, Kcal or kg-cal

The energy required to raise the temperature of 1 kilogram of water from 14.5 to 15.5 degrees Celsius (4186.8 joules). This unit is used to describe the energy content of food.^[40]^:64

Also known as large calorie, kilogram calorie, kilocalorie.

See Energy.

[edit] capacity - C

The maximum flow rate of gas or liquid through a pipeline.
The maximum electric power of a generating unit.^[41]^:65

See dependable capacity, peak capacity.

[edit] capacity factor - CF

The yearly percentage of time a power plant delivers full power.^[42]^:65

Compare availability factor.

[edit] captive electrolyte battery

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] cathode

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] cathodic protection

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] cell

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] cell barrier

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] cell junction

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] Central Receiver Power Plant

probably the old name for the power tower^[43]^:71

[edit] central-receiver systems

^[44]^:71

[edit] charge

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] charge carrier

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] charge controller

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] charge factor

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] charge rate

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] chemical vapor deposition - CVD

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] chimney effect

definitely ^[45]^:75

Mazria's definition: The tendency of air or gas to risewhen heated, owing to its lower density compared with that of the surrounding air or gas. This principle is used to help cool a building by allowing hot or warm air to rise out through upper level windows. This creates a negative pressure which draws cooler outdoor air in through windows at a lower level.

[edit] cleavage of lateral epitaxial films for transfer - CLEFT

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] clerestory

definitely ^[46]^:657

[edit] climate

definitely ^[47]^:657

[edit] cloud enhancement

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] coal equivalent - c.e. or CE

A reference value used to compare the energy content of coal to other energy carriers. 1 kg coal equivalent is equal to 7,000 kilocalories (29.3 MJ).

Note locally relevant conversion factors are in extensive use.

See barrel of oil equivalent, ton of oil equivalent.

Mazria uses this type of notation:

collector, flat plate

collector, focusing

collector, solar

[edit] coefficient of heat transmission

http://www.solarexpert.com/Glossary.html

[edit] collector

definately ^[48]^:90

[edit] collector angle

maybe ^[49]^:657

[edit] collector/concentrator subsystem

maybe ^[50]^:90

[edit] collector efficiency

definitely ^[51]^:90

[edit] collector heat removal efficiency factor

maybe ^[52]^:90

[edit] collector overall energy loss coefficient

maybe ^[53]^:90

[edit] collector subsystem

maybe ^[54]^:90

[edit] collector plates

probably ^[55]^:91

[edit] collector tilt

maybe ^[56]^:91

[edit] combined collector

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] combined cycle

A power plant in which the waste heat from a gas turbine cycle is used to drive a conventional steam cycle.^[57]^:91

Compare cogenerator.

[edit] comfort energy

maybe ^[58]^:92

[edit] ompact fluorescent lamp

Small fluorescent bulbs sized to fit traditionally incandescent lighting fixtures.

Also known as screw ins.

[edit] compressed air storage

maybe ^[59]^:93

[edit] concentrating collector

definitely ^[60]^:94

[edit] concentrating solar

Solar energy systems that use reflectors to concentrate sunlight.^[61]^:94

dish/engine

power tower

trough

solar bowl

[edit] concentrator

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] =concrete solar collector

maybe ^[62]^:94

[edit] conductance - C

maybe ^[63]^:657

[edit] conduction

The transfer of heat by contact. Conduction is distinguished from convection by the absence of any bulk movement of particles.^[64]^:95
The transfer of heat, electricity or sound through a material.^[65]^:95

See convection, radiation.

[edit] conduction band

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] conductivity - k

definately for heat transfer reasons^[66]^:658

Compare resistance.

[edit] conductor

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] contact resistance

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] convection

The transfer of heat by moving fluids.^[67]^:98 ^[68]^:658
The circulation of fluids in a gravitational field due to thermal gradients.

See conduction, radiation.

[edit] cover plate

http://www.solarexpert.com/Glossary.html

[edit] consumption charge

maybe ^[69]^:96

Compare demand charge.

[edit] conversion efficiency

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] convertor

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] cooling capacity

The rate a refrigeration system removes heat. The unit for cooling capacity is ton of cooling.^[70]^:100

See energy efficiency ratio.

[edit] cooling degree day - CDD

A yearly cumulative measure of the differences between the mean daily temperature and 65 ºF (for those days where average temperature is below 65 ºF). Degree days are used to estimate the annual cooling and refrigeration requirements for a building.^[71]^:658

CDD = (average daily temperature - 65)January 1 – December 31

Compare heating degree day.

[edit] cooling load temperature difference - CLTD

A weighted value used in cooling load calculations which accounts for the combined effects of radiant heat and temperature difference between surfaces.

[edit] cool roof color material - CRCM

A paint containing chromic and ferric oxides which lowers roof temperatures by reflecting over 60% of near infra red light.

[edit] cooperative

A customer owned utility that operates in areas outside the service area of traditional utilities.

[edit] copper indium selenium - CIS

^[72]^:161

[edit] copper indium diselenide

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] cord

A unit of volume used to measure quantities of wood and measuring 4ft by 4ft by 8 ft.^[73]^:100

See Volume.

[edit] core daylighting

Systems which bring daylight more than 15 feet into the interior of a building.

atria

courtyards

light shelves

sky lights

See daylighting.

Compare perimeter daylighting.

[edit] coulomb - C

The SI unit of charge equal to that transferred by a one ampere current in one second. A coulomb is equal to 6.28 x 1028 electrons.^[74]^:103

[edit] crystalline silicon

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] current

The flow of electricity. Current is measured in amperes.^[75]^:109

[edit] current at maximum power

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] cutoff voltage

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] cycle

http://www1.eere.energy.gov/solar/solar_glossary.html

[edit] czochralski process

http://www1.eere.energy.gov/solar/solar_glossary.html

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] D

[edit] dangling bonds

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] daylighting

The use of sunlight to light a building’s interior.

See perimeter daylighting, core daylighting.

[edit] daylight autonomy

^[76]^:161

[edit] daylight deflection

^[77]^:161

[edit] daylight factor

^[78]^:161

[edit] days of storage

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] DC-to-DC converter

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] dead air space

maybe ^[79]{{rp|658}

Also known as still air space.

[edit] deciduous

probably ^[80]^:658

[edit] declination

probably ^[81]^:112

[edit] deep-cycle battery

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] deep discharge

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] degree day - DD

^[82]^:113

See also cooling degree day, heating degree day.

[edit] demand

maybe ^[83]^:114

[edit] demand charge

maybe ^[84]^:114

[edit] demand side management - DSM

The modification of end user energy consumption such that an energy resource can be most efficiently utilized. DSM strategies include:

Conservation and energy efficiency programs

Reducing consumption during peak load periods (peak clipping)

Shifting consumption to low load periods (valley filling)

Compare supply side management.

[edit] de minimis risk

A risk of negligible concern

From (Latin) de minimis non curat lex.

[edit] dendrite

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] dendritic web technique

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] dendroenegy

Wood derived energy

See silviculture.

[edit] Department of energy

^[85]^:116

See Energy Information Administration.

[edit] dependable capacity

The reliable ability of a generating system to carry load.

See maximum dependable capacity (gross), maximum dependable capacity (net).

[edit] depletion zone

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] depth of discharge - DOD

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] desiccant and evaporative cooling - DEC

^[86]^:162

[edit] designated solar surface

maybe ^[87]^:117

[edit] design heat load

http://www.solarexpert.com/Glossary.html

[edit] design month

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] design temperature

http://www.solarexpert.com/Glossary.html

[edit] diffused sky radiation

maybe ^[88]^:120

[edit] diffuse radiation

definately ^[89]^:120 ^[90]^:659

Diffuse Radiation — Radiation received from the sun after reflection and scattering by the atmosphere and ground.http://www1.eere.energy.gov/solar/solar_glossary.html#D

Compare direct radiation.

[edit] diffusion furnace

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] diffusion length

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] diode

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] direct current - DC

An electric current that flows in one direction.^[91]^:121

Compare alternating current.

[edit] direct gain

definitely ^[92]^:659

[edit] direct insolation

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] direct light

Compare indirect light.

[edit] direct radiation

http://www.solarexpert.com/Glossary.html

[edit] direct solar

generally refers to technologies or effects that involve a single-step conversion of sunlight that results in a usable form of energy.

Compare indirect solar.

[edit] direct solar conversion (photovoltaics

compare this to Hay ^[93]^:122

[edit] discharge rate

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] disconnect

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] dispatch

^[94]^:122

[edit] displacement ventilation

^[95]^:162

[edit] distributed energy resources - DER

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] distributed generation

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] distributed power

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] distributed systems

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] distribution lines

Local, low voltage power lines that carry electricity to end users

Compare transmission lines.

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] domestic hot water

probably ^[96]^:125

[edit] domestic water heating system

maybe ^[97]^:125

[edit] donor

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] donor level

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] dopant

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] dope

maybe

[edit] doping

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] double glazing

probably ^[98]^:126 ^[99]^:661

[edit] downtime

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] drain down system

http://www.solarexpert.com/Glossary.html

[edit] drain back system

http://www.solarexpert.com/Glossary.html

[edit] dry cell

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] duty cycle

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] duty rating

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] E

[edit] edge-defined film-fed growth - EFG

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] efficiency - E

probably - use mazria's breakdown ^[100]^:135 ^[101]^:659 ^[102]^:162

[edit] electric circuit

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] electric current

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] electric grid

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] electricity

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] Electricity Feed Law

A law passed in 1991 in Germany which requires utilities to buy wind generated electricity at 90 percent of the retail rate.

Also known as Stromeinspeisungsgesetz.

Compare production tax credit.

[edit] Electric Power Research Institute - EPRI

A non-profit organization founded in 1973 to conduct energy research for the electric utility industry.

[edit] Electric Power Supply Association - EPSA

An energy industry lobbying group.

[edit] electric utility

See utility.

[edit] electrochemical cell

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] electrode

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] electrodeposition

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] electrolyte

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] electromagnetic radiation

probably... pull from almanac ^[103]^:141

[edit] electron

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] electron volt eV

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] emissivity - ε

A material property which describes the percentage of radiant flux a body will emit compared to that emitted by a black body at the same temperature.^[104]^:143

See absorptivity, reflectivity, selectivity, transmissivity, black body

[edit] emittance

definitely ^[105]^:143

[edit] end user

The ultimate customer for energy.

[edit] energy

The capacity to do work. Forms of energy include:^[106]^:143

chemical

electrical

mechanical

nuclear

thermal

[edit] energy audit

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] Energy Conservation Regulation - EnEV

^[107]^:162

[edit] energy consumption

maybe... see table ^[108]^:144

Also known as net energy consumption.

[edit] energy contribution potential

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] energy density

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] energy efficiency ratio - EER

The ratio of cooling capacity to energy input. EER is used to measure the efficiency of a refrigeration system.^[109]^:144

Compare coefficient of performance.

See seasonal energy efficency ratio.

[edit] energy factor - EF

The percentage of energy turned into hot water in a water heater. ^[110]^:162

NOTE: the Schittich source has a different definition

[edit] Energy Information Administration - EIA

The information dissemination branch of the Department of Energy.

[edit] energy intensiveness

maybe ^[111]^:147

[edit] energy levels

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] Energy Research and Development Administration - ERDA

maybe...grab from almanac ^[112]^:147

[edit] energy sectors

commercial sector: energy used by businesses that don’t fall into the industrial sector

industrial sector: energy used in agriculture, construction, fishing, forestry, manufacturing and mining

residential sector: energy used by private households

transportation sector: energy used in the transport of people and products

[edit] Energy Star

An energy efficiency labeling program established in 1992 by the U.S. Environmental Protection Agency (EPA). The EPA has collaborated with the U.S. Department of Energy (DOE) since 1996 on efficiency labeling for specific product categories. Energy Star labels have expanded from originally covering computers and monitors to include home appliances, commercial and domestic electronics, lighting systems and buildings

[edit] enthalpy - h or H

A thermodynamic quantity equal to the internal energy plus the product of the pressure and volume of a system.^[113]^:150

h = u + PV

h = enthalpy

u = internal energy

P = pressure

V = volume

Also known as heat content, heat function, heat of reaction, total energy.

See Hess's Law.

[edit] envelope

[edit] envelope area

^[114]^:162

[edit] epitaxial growth

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] equalization

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] equilizing charge

http://www1.eere.energy.gov/solar/solar_glossary.html#D

[edit] equinox

probably ^[115]^:153 ^[116]^:660

[edit] erg

A unit of energy equal to 10−7 joules

See Energy

[edit] eutectic salts

^[117]^:660

[edit] evacuated tube collectors

^[118]^:162

[edit] evaporative cooling

maybe ^[119]^:155

[edit] extra high voltage - EHV

Voltage levels of 345 to 800 kilovolts^[120]^:158

Compare low voltage, high voltage, ultra-high voltage.

[edit] extra high voltage - EHV

Voltage from 345 to 800 kilovolts

See low voltage, high voltage, ultra high voltage.

[edit] extrinsic semiconductor

http://www1.eere.energy.gov/solar/solar_glossary.html#D

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] F

[edit] fenestration

Openings in a building's envelope and how they are arranged. The proper placement of fenestration will help control light and air admission.^[121]^:660

[edit] fixed mirror/distributed focus - FMDF

^[122]^:168 See solar bowl

[edit] flat plate collector

definately ^[123]^:657

[edit] flux

(general) The rate that energy or matter passes through a given area.^[124]^:174
(nuclear) The number of particles passing through a sphere which a cross-sectional area of one centimeter squared per second

[edit] focusing collectors

definitely ^[125]^:175 ^[126]^:660

[edit] forced air systems

probably maybe ^[127]^:175

[edit] forced circulation water heater systems

maybe ^[128]^:175

[edit] forced convection

[edit] Forschungszentrum Karlsruhe - FzK

A large multidisciplinary research and development laboratory in Germany

[edit] Fresnel lens

A compact lens composed of short concentric segments. Fresnel lenses have traditionally been used in lighthouses but are also used in concentrating solar devices.^[129]^:179

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] G

[edit] gallium arsenide

maybe ^[130]^:188

[edit] gaming

Anti-competitive market behavior

[edit] gigajoule - GJ

One billion joules.

See.

[edit] gigawatt - GW

One billion watts.

See.

[edit] glare

definitely ^[131]^:660

[edit] Glauber's salts

probably ^[132]^:201

[edit] glazing

definately ^[133]^:661

See double glazing.

[edit] global radiation

^[134]^:162

[edit] gravity convection

[edit] gray body

pull from almanac ^[135]^:203

[edit] greenhouse effect

^[136]^:661

[edit] grid

A network that connects electrical generation, transmission and distribution to end users.^[137]^:203

[edit] growing season

maybe ^[138]^:204

[edit] g-value

^[139]^:162

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] H

[edit] heat

Energy in transit due to a difference in temperature.^[140]^:208
The transfer of energy due to a difference in temperature

[edit] heat battery

[edit] heat budget

maybe ^[141]^:208

[edit] heat capacity - C

The amount of heat required to raise the temperature of a substance by one degree.^[142]^:203

heat capacity = mass x specific heat

[edit] Heat engine

A device that converts thermal energy to mechanical energy.^[143]^:208

[edit] heat gain

maybe ^[144]^:209

Mazria's: an increase inthe amount of heat contained in a space, resulting from direct solar radiation and the heat given off by people, lights, equipment, machinergy and other sources.^[145]^:661

[edit] Heating degree day - HDD

A yearly cumulative measure of the differences between the mean daily temperature and 65 ºF (for those days where average temperature is below 65 ºF.) Degree days are used to estimate the annual heating requirements for a building.^[146]^:209 ^[147]^:658

HDD = (65 - average daily temperature)

Compare cooling degree day.

[edit] heating season

http://www.solarexpert.com/Glossary.html

[edit] heat island effect

maybe ^[148]^:210

[edit] heat protection glass

^[149]^:163

[edit] heat pump

maybe ^[150]^:210

[edit] heat storage

http://www.solarexpert.com/Glossary.html

[edit] heat storage capacity

http://www.solarexpert.com/Glossary.html

[edit] heat storm

A weather condition wherein regional temperatures exceed 100 ºF for three days in a row. Heat storms result in high energy usage due to increased cooling requirements in buildings

[edit] hectare - ha

A unit of area equal to 10,000 square meters

See Area.

[edit] heliochemical process

maybe ^[151]^:213

[edit] helioelectrical process

maybe ^[152]^:213

[edit] heliostat

A mirror that tracks the sun and reflects sunlight in a desired direction.^[153]^:213

[edit] heliothermal process

maybe ^[154]^:213

[edit] heliothermometer

maybe ^[155]^:213

[edit] heliotropic wind

maybe ^[156]^:213

[edit] high voltage

Voltages from 100 to 345 kilovolts

Note locally relevant definitions of high voltage may apply.

Compare: low voltage, extra high voltage, ultra-high voltage.

[edit] HITEC

maybe ^[157]^:216

[edit] hour angle

maybe ^[158]^:219

[edit] hybrid solar energy system

http://www.solarexpert.com/Glossary.html

[edit] hybrid solar system

maybe ^[159]^:220

[edit] hydrologic cycle

probably ^[160]^:226

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] I

[edit] Idaho National Laboratory - INL

A national laboratory which specializes in environmental, energy and national defense related science.

See: National Laboratory System.

[edit] illuminance

^[161]^:163

[edit] image furnace

maybe ^[162]^:231

[edit] incident

maybe ^[163]^:233

[edit] incident angle

maybe ^[164]^:233 ^[165]^:163

[edit] incident radition

maybe ^[166]^:233

[edit] incident sunlight

maybe ^[167]^:233

[edit] independent power producer - IPP

A non-utility, non-qualifying facility that generates and sells wholesale electricity.

Also known as merchant generator, non-utility generator, non-utility supplier, private power producer.

[edit] indirect gain system

maybe ^[168]{{rp|661}

[edit] indirect light

Compare direct light.

[edit] indirect solar

generally refers to technologies or effects that involve multiple-step transformations of sunlight that result in a usable form of energy.

Compare direct solar.

[edit] indirect system

http://www.solarexpert.com/Glossary.html

[edit] infiltration

maybe ^[169]^:661

[edit] infrared radiation - IR

definitely ^[170]^:236 ^[171]^:661

See electromagnetic spectrum.

[edit] infrared transmission

^[172]^:163

[edit] insolation

The rate that solar radiation arrives at the Earth’s surface. Insolation is typically expressed in watts per square meter or Btu per square foot per day.^[173]^:237

From incoming solar radiation.

Also known as solar irradiance.

[edit] instantaneous efficiency

google ^[174]^:238

[edit] insulation

http://www.solarexpert.com/Glossary.html

[edit] integral collector/storage (breadbox) system

google ^[175]^:239

[edit] inversion

probably ^[176]^:243

[edit] inverter

probably ^[177]^:243

[edit] irradiance

The radiant flux per area. Irradiance is measured in W/m2

Also known as radiant emittance, radiant exitance, and radiant flux density.

See solar irradiance.

Compare radiance.

[edit] isolated gain system

maybe ^[178]^:662

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] J

[edit] joule - J

The derived unit for energy, work and quantity of heat in the SI system/
The quantity of energy expended when a current of one ampere is passed through a resistance of one ohm for one second.
The quantity of work done when a force of one Newton is applied to an object through a displacement of one meter.

See Energy.

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] K

[edit] kerf

google

[edit] kilogram - kg

The base unit of mass in the SI system.

See Mass and Weight.

[edit] kilometer - km

A thousand meters.

See Length.

[edit] kilovolt - kV

A thousand volts.

[edit] kilowatt - kW

A unit of power equal to thousand watts.^[179]^:251

See Power.

[edit] kilowatt hour - kWh

A quantity of energy equal to that expended by one thousand watts of power in one hour. Kilowatt hours are the standard measure of electricity usage.^[180]^:251

See: Power.

[edit] kilowatt peak

^[181]^:163

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] L

[edit] langley

A unit of radiant flux equal to one calorie per square centimeter per minute. Langleys are used to measure solar radiation.^[182]^:255

[edit] latent heat

Heat released or absorbed by a substance during a phase change.^[183]^:255 The term was originally derived from the Latin latere, to lie hidden but is now obsolete, replaced by "enthalpy of transformation". The two latent heats (or enthalpies) typically described are: latent heat of fusion (melting), and latent heat of vaporization (boiling). The names describe the direction of heat flow from one phase to the next: solid ← → liquid ← → gas.

Compare sensible heat.

[edit] latent heat storage

^[184]^:163

[edit] levelized cost - LC

The cost per kilowatt hour calculated by dividing the total costs of construction and operations throughout the life of a generation plant by the estimated kilowatt hours produced during the life of the plant. Levelized costs are used to equitably compare generation options.

[edit] light

maybe ^[185]^:259

[edit] light directing glass

^[186]^:163

[edit] light directing louvred blind=

^[187]^:163

[edit] light direction

[edit] line losses

Electricity which is lost during transmission and distribution, generally 3-4%.
Gas which is lost in a piping distribution system.^[188]^:261

Also known as: losses.

[edit] load

An individual component which requires electricity.
The demand for power in an electrical system.^[189]^:265

Also known as demand.

See maximum capacity, peak load.

[edit] local mean time

maybe ^[190]^:267

[edit] Lof house

maybe ^[191]^:265

[edit] louvre

probably ^[192]^:268

[edit] low voltage

Voltages below 100 kilovolts.

Note locally relevant definitions of low voltage may apply.

Compare high voltage, extra-high voltage, ultra-high voltage.

[edit] lumen - lm

The SI unit for luminous flux equal to the rate which light which flows from a one candela source through one steradian.

[edit] luminance

^[193]^:163

[edit] luminance distribution

^[194]^:163

[edit] luminous efficacy

^[195]^:163

[edit] luminous flux - φ

The rate of radiation flow in the visible spectrum. Measured in lumens.^[196]^:163

See electromagnetic spectrum, radiant flux.

[edit] luminous intensity - I

measured in candela ^[197]^:163

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] M

[edit] Majors

The largest companies within a given industry.

Petroleum Majors

ExxonMobil

Royal Dutch/Shell Group

TotalFinaElf

ChevronTexaco Corporation

Coal Majors

Peabody Energy

Arch Coal

Kennecott Energy

Massey

Also known as super majors.

See Seven Sisters.

[edit] margin

mabybe ^[198]^:277

[edit] mass materials

alternate term for thermal mass ^[199]^:278

[edit] massive storage

^[200]^:163

[edit] maximum dependable capacity - gross

The lowest yearly electrical output of a generator which generally occurs in the summer due to higher cooling water temperatures.

[edit] maximum dependable capacity - net

The gross maximum dependable capacity minus the local power plant loads.

[edit] mean daily temperature

definately ^[201]^:279

[edit] megawatt - MW

A unit of power equal to a million watts.^[202]^:280

See Energy.

[edit] megawatt hour - MWh

A million watts used for one hour.

See Power Time.

[edit] mho

maybe ^[203]^:282

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] microcrystalline cells

^[204]^:163

[edit] Ministry of International Trade and Industry - MITI

The administrative agency charged with implementing national energy policy ... easily the most influential of Japan's government units. http://www.crest.org/repp_pubs/articles/issuebr14/06Japan.htm

[edit] monocrystalline cells

^[205]^:163

[edit] N

[edit] name plate rating

maybe ^[206]^:293

[edit] natural circulation

Also known as natural circ.

[edit] natural convection

http://www.solarexpert.com/Glossary.html

[edit] Natural Resources Defense Council- NRDC

A leading environmental policy agency committed to public and environmental health.

[edit] net energy gain - NEG

[edit] net summer capability

[edit] nitinol heat engine

definately google ^[207]^:300

[edit] nocturnal cooling

maybe ^[208]^:662

[edit] non-utility generator - NUG

See independent power producer.

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] =normal radiation

maybe ^[209]^:303

[edit] O

[edit] ocean temperature

maybe ^[210]^:310

[edit] off-grid

^[211]^:163

[edit] ohm - Ω

A unit of electrical resistance that produces a one ampere current between a potential difference of one volt.^[212]^:313

[edit] one-tank closed-loop system

http://www.solarexpert.com/Glossary.html

[edit] open system

http://www.solarexpert.com/Glossary.html

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] opacity

maybe ^[213]^:318

[edit] opaque

either opacity or orpaque... probably opaque ^[214]^:662

[edit] ovonic

maybe ^[215]^:322

[edit] P

[edit] parabolic collector

definately ^[216]^:324

[edit] parabolic mirror

maybe ^[217]^:324

[edit] parabolic reflector

maybe ^[218]^:325

[edit] passive solar design

maybe ^[219]^:326

[edit] passive solar heating

^[220]^:326

[edit] passive solar

Systems use non-mechanical techniques to control the capture of sunlight and distribute this energy into usable outputs such as heating, lighting, cooling or ventilation. These techniques include selecting materials with favorable thermal properties to absorb and retain energy, designing spaces that naturally circulate air to transfer energy and referencing the position of a building to the sun to enhance energy capture. In some cases passive solar devices can have mechanical movement with the important distinction that this movement is automatic and directly powered by the sun.^[221]^:326

See Trombe wall.

Compare active solar.

[edit] passive system

http://www.solarexpert.com/Glossary.html

[edit] peak capacity

The maximum electrical load which a component or system can carry.

[edit] peaking capacity

maybe ^[222]^:327

[edit] peak load

The maximum electrical load in a given period of time. Peak loads occur daily from 6 to 9 in the morning and 4 to 9 in the evening. Peak loads occur yearly during the summer months due to the increased use of air conditioners.

Also known as peak demand.

Compare base load

[edit] percentage of possible sunshine

http://www.solarexpert.com/Glossary.html

[edit] perimeter daylighting

Perimeter windows that bring daylight up to 15 feet into a building.

Compare core daylighting.

[edit] photocell

See photovoltaic.

[edit] photoelectric cell

maybe ^[223]^:331

See

[edit] photoelectric effect

make sure to explain the distinction between photoelectric and photovoltaic ^[224]^:331

[edit] photosynthesis

The process by which green plants use sunlight to convert carbon dioxide and water into carbohydrates. Oxygen is a byproduct of photosynthesis.^[225]^:332

[edit] photovoltaic - PV

A device made from layers of semi conducting material that converts sunlight into electricity.^[226]^:332

Also known as solar cell, photocell or photovoltaic cell.

[edit] photovoltaic concentrator array

maybe ^[227]^:332

[edit] positive gradient

maybe ^[228]^:340

[edit] power

The rate at which energy is produced, transferred or consumed.^[229]^:341

[edit] primary energy source

Fuels or resources in their natural form which can be used for heating, transportation or secondary energy generation. Primary energy sources include, biomass, coal, geothermal, hydroelectric, natural gas, petroleum, solar heat, solar light, uranium and wind.^[230]^:346

Compare secondary energy source.

[edit] process heat

definately .^[231]^:347

[edit] progress ratio - pr

1-learning curve pr=2α

Prospects for PV: a learning curve analysis

[edit] Public Utility Holding Company Act - PUHCA

Legislation enacted in 1935 which regulates the ownership of utility companies. PUHCA outlaws the ownership of utilities by holding companies and restricts the ownership of utilities by non-utility companies.

[edit] Public Utility Regulatory Policies Act - PURPA

Legislation enacted in 1978 which encourages efficient energy production and conservation. PURPA mandates the purchase of electricity from energy producers such as qualifying facilities and cogenerators at avoided cost.

See small power producer.

[edit] pumped hydro

The use of off-peak power to pump water from low reservoirs to higher reservoirs which is subsequently used to generate electricity during peak loads.^[232]^:351

Also known as pumped hydro storage or pumped storage.

[edit] pyranometer

google ^[233]^:352

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] Q

[edit] quad

One quadrillion (1015) British thermal units.^[234]^:354

See Energy.

[edit] qualifying facility - QF

A small power producer or cogenerator which satisfies the requirements of the Federal Energy Regulatory Commission.

See PURPA.

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] R

[edit] radiance

The luminous flux per unit area. Radiance is measured in W/m2

Compare irradiance.

[edit] radiant flux

The rate of radiation flow.

Compare luminous flux

[edit] radiant panel

http://www.solarexpert.com/Glossary.html

[edit] radiant sky cooling system

Check this out... It looks like a dumbed down version of the Skytherm system ^[235]^:355

[edit] radiation

The transfer of energy by electromagnetic waves and/or particles.^[236]^:662
Energy in the form of electromagnetic waves and/or particles.^[237]^:355

See: conduction, convection, ionizing radiation, non-ionizing radiation.

[edit] reflected radiation

look for any other occurences of this definition ^[238]^:370 http://www.solarexpert.com/Glossary.html

[edit] reflectance

compare to reflectivity ^[239]^:663

[edit] reflected glare

^[240]^:163

[edit] reflection

Compare refraction.

[edit] reflectivity

A material property which describes the percentage of radiant flux or luminous flux a body will reflect.^[241]^:370

See absorptivity, emissivity, selectivity, transmissivity, white body.

[edit] refraction

The change in the direction of light passing through a transparent medium.^[242]^:371

See reflection.

[edit] refrigerant

http://www.solarexpert.com/Glossary.html

[edit] renewable energy

Energy resources such as biomass, geothermal, hydroelectric, solar and wind which are regenerative and virtually inexhaustible.^[243]^:374

Also known as renewable resource.

[edit] resistance - R

definitely^[244]^:663

Compare conductivity.

[edit] retrofitting

http://www.solarexpert.com/Glossary.html

[edit] rock storage system

^[245]^:663

[edit] roof-integrated installation

^[246]^:165

[edit] roof pond system

^[247]^:663

[edit] R-value

A measure of resistance to heat flow that is used to rate construction materials. Higher values indicate better insulating properties. The units for R-value are square meter degrees Celsius per watt (m2 • ºC/W).^[248]^:386

Also known as R-factor.^[249]^:663

Also known as resistance.http://www.solarexpert.com/Glossary.html

Compare U-value.

Contents
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[edit] S

[edit] scratch

A defect on an optical surface which is many times longer than wide.

Compare dig.

[edit] seasonal efficiency

http://www.solarexpert.com/Glossary.html

[edit] seasonal energy storage

^[250]^:165

[edit] secondary energy

Form of energy generated by conversion of primary energies, e.g. electricity from gas, nuclear energy, coal, oil, fuel oil, and gasoline from mineral oil, coke and coke oven gas from coal. ENS Nuclear Glossary

Secondary energy is the more useable forms to which primary energy may be converted, such as electricity and petrol.WNA

Primary energy is energy contained in raw fuels and any other forms of energy received by a system as input to the system. The concept is used especially in energy statistics in the course of compilation of energy balances. Primary energies are transformed in energy conversion processes to more convenient forms of energy, such as electrical energy and cleaner fuels. In energy statistics these forms are called secondary energy. Primary energy

ENERGY STAR Performance Ratings Methodology for Incorporating Source Energy Use Source vs. Site energy

[edit] selective surface

definately ^[251]^:664

[edit] selectivity - α/ε

The ratio of absorptivity, in the visible spectrum to emissivity in the infrared spectrum used to measure the performance of solar heat collectors

See reflectivity, transmissivity.

[edit] self-regulating facades

^[252]^:163

[edit] semiconductor

^[253]^:163

[edit] sensible heat

definitely ^[254]^:394

Compare latent heat.

[edit] sensible heat storage

maybe ^[255]^:394

[edit] shading

probably ^[256]^:396

[edit] shading coefficient

http://www.solarexpert.com/Glossary.html

[edit] silicon

[edit] skylight

definitely ^[257]^:401

[edit] Small power producer - SPP

A facility under 80 MW that generates at least 75% of its output using renewable energy sources.

See PURPA, qualifying facility.

[edit] solar air heater

maybe ^[258]^:405

[edit] solar altitude

maybe ^[259]^:405

[edit] solar assisted absorption cooling system

maybe ^[260]^:405

[edit] solar ballon

maybe ^[261]^:405

[edit] solar cell

A photovoltaic cell, typically made from silicon, that converts light directly into electricity.^[262]^:405

'See solar module and solar array.

[edit] solar collection efficiency

maybe ^[263]^:405

[edit] solar collector

definitely ^[264]^:406 ^[265]^:163

[edit] solar concentrator

maybe ^[266]^:406

[edit] solar constant

definitely ^[267]^:406

[edit] solar cooling

definitely ^[268]^:406

[edit] solar declination

maybe ^[269]^:407

[edit] Solar Energy Research Intitute - SERI

A DOE research laboratory established in 1974 and opened in 1977. SERI became the National Renewable Energy Laboratory in 1991.^[270]^:407

[edit] solar energy/solar power

[edit] solar energy

(primary) Energy from the sun in the form of heat and light.
(secondary) In a technological sense, this term is used to all inclusively describe "solar" technologies that harness the sun's energy. Sub-category technologies within solar energy include solar thermal, solar lighting (daylighting, hybrid lighting), solar chemical and solar power technologies such as PV and concentrating solar thermal power plants. (SEE: Sklar, NREL)

Also known as solar.

[edit] solar power

(primary, consistent) Electricity derived from solar energy.
(secondary, consistent) This term is used to specifically describe technologies that harness the sun's energy to produce electricity. The main representative of this technology are photovoltaics and concentrating solar thermal power plants. The updraft tower is a third but rarely used solar power technology. (SEE: Sklar, Hay, NREL)
(leads to misunderstanding) Power derived from solar energy.^[271]^:412
(leads to misunderstanding) Technologies that harness the sun's energy. (SEE: NOTE)

Note The terms solar energy and solar power are used to describe two distinct things, the (primary) being (energy/power) from the sun and the (secondary) being the technologies that harness this energy. The (primary) distinction (energy/power) is often defined by using the physical relationship between the terms energy and power (Power=Energy/Time) as a basis for relating the the terms solar energy and solar power. This method of relating the terms seems natural but there is a pre-existing confusion between the terms energy and power. i.e. A kilowatt is a unit of power and kilowatt hour is a unit of energy but poor understanding of these units and the quantities they represent leads to them being used interchangeably. By extension, using a poorly understood physical relationship to define the terms solar energy and solar power wraps them in this pre-existing confusion. A consistent use of the terms can be achieved by restricting the definitions of solar power to the bold definitions above.

[edit] solar farm

probably ^[272]^:409

[edit] solar furnace

probably ^[273]^:409

[edit] solar heat gain coefficient - SHGC

[edit] solar heating

definitely ^[274]^:409

[edit] solar hot water

definitely ^[275]^:410

[edit] solarization

maybe ^[276]^:410

[edit] solar power satellite

A concept level energy system which envisions satellites in orbit beaming concentrated sunlight to receivers on earth.

[edit] solar radiation

definitely ^[277]^:413

[edit] solar right's

probably ^[278]^:413

[edit] solar salt

maybe ^[279]^:413

[edit] solar still

maybe, use ^[280]^:427 to rework solar still ^[281]^:413

[edit] solar thermal

Systems that collect and/or concentrate sunlight to produce high temperatures.

[edit] solar thermal power plant

A power plant which derives at least 75% of its output is from solar energy.

[edit] solar water heater

Systems that use sunlight to heat water. The three basic types of solar water heaters are:

Active systems which use pumps to circulate a heat transfer fluid

Passive systems which circulate heat transfer fluid by natural circulation. These are also called thermosiphon systems

Batch systems which use a tank directly heated by sunlight

[edit] specific heat

http://www.solarexpert.com/Glossary.html

[edit] specific heat capacity - C or c

The amount of heat required to raise the temperature of 1 gram of a material by one degree Celsius.^[282]^:420
The ratio a material’s thermal capacity to the thermal capacity of water.^[283]^:420

Also known as specific heat.

[edit] square foot of radiation

check on this one ^[284]^:423

[edit] stack effect

probably ^[285]^:423

[edit] standby heat loss

http://www.solarexpert.com/Glossary.html

[edit] stilb - sb

An SI unit of illuminance equal to one candela per square centimeter

[edit] Sterling engine

probably ^[286]^:427

[edit] sun path diagram

http://www.solarexpert.com/Glossary.html

[edit] switchable glass

^[287]^:163

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] T

[edit] temperate

Regions which experience moderate climates. Most temperate zones are between 30 and 60 degrees latitude.

[edit] therm

maybe ^[288]^:445

[edit] thermal break

^[289]^:665

Also known as thermal barrier.

[edit] thermal capacity

maybe ^[290]^:446

[)">edit] thermal efficiency - ( $\eta_{th} \,$ )

The ratio of energy input to work output.

[edit] thermal inertia

^[291]^:665 AKA thermal mass - http://www.solarexpert.com/Glossary.html

[edit] thermal mass

Materials used to store heat.^[292]^:665

See direct gain, indirect gain.

[edit] thermal storage wall

^[293]^:665

[edit] thermodynamic efficiency

The percentage of heat converted to work.

[edit] thermosyphon or thermosyphoning

maybe ^[294]^:451

[edit] thin film

[edit] time lag

^[295]^:665

[edit] Thomason solar house

maybe maybe ^[296]^:451

[edit] ton of cooling

^[297]^:455

[edit] ton of oil equivalent - TOE

A reference value used to compare the energy content of oil to other energy carriers. 1 ton of oil equivalent is equal to 10,000 megacalories (41.87 GJ).

Note locally relevant conversion factors are in extensive use.

See barrel of oil equivalent, coal equivalent - c.e., CE.

[edit] transmission lines

Long distance, high voltage power lines that carry electricity from generation to distribution points.^[298]^:460

Compare distribution lines.

[edit] tranmission utility - TRANSCO

An electric utility that constructs and/or maintains transmission lines.

See distribution utility, generation company.

[edit] translucent

^[299]^:665

[edit] transmissivity

A material property which describes the percentage of radiant flux or luminous flux that will pass through a body.^[300]^:460

See: absorptivity, emissivity, [#reflectivity|reflectivity]],selectivity.

[edit] transmittance/absorptance product

maybe maybe ^[301]^:460

[edit] transparent

^[302]^:665

[edit] transpiration

definitely maybe ^[303]^:461

[edit] trickle-down collectors

maybe maybe ^[304]^:461

[edit] Trombe wall

A passive solar heating and ventilation system consisting of an air channel sandwiched between south facing glazed windows and a dark vertical thermal mass. Sunlight heats the air channel during the day and drives natural circulation through vents at the top and bottom of the wall. During the evening the wall radiates heat to the interior that was stored through the day.^[305]^:462

Also known as Trombe-Michel wall.^[306]^:666

NOTE: add Felix Trombe and Jacques Michel to this

[edit] tube-plate-absorber

http://www.solarexpert.com/Glossary.html

[edit] tube-type collector

http://www.solarexpert.com/Glossary.html

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] U

[edit] ultra high voltage

Voltages greater than 800 kilovolts.^[307]^:465

See extra high voltage, high voltage, low voltage.

[edit] ultra high voltage transmission

The transmission of voltages greater than 800 kilovolts

[edit] ultraviolet - UV

^[308]^:666

AKA: ultraviolet radiation - http://www.solarexpert.com/Glossary.html

[edit] useful energy gain

maybe ^[309]^:470

[edit] useful solar heat

maybe ^[310]^:470

[edit] utility

(generic) A regulated entity that performs an essential public service.
(electric) A regulated entity that owns and/or operates facilities for the generation, transmission, distribution or sale of electricity primarily for public use.

Compare non-utility, qualifying facility.

[edit] U-value

A measure of the heat flow through a material that is used to rate construction materials. The units for U-value are watts per square meter per degree Celsius (W/m2 • ºC).^[311]^:472

Also known as U-factor.

Compare R-value.

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] V

[edit] vapor barrier

^[312]^:666

[edit] violet cell

maybe ^[313]^:477

[edit] visible radiation

maybe ^[314]^:478

[edit] volt - V

The amount of electromotive force required to drive a current of one ampere through a resistance of one ohm.^[315]^:479

Contents
!–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z References

[edit] W

[edit] water wall

^[316]^:666

[edit] watt - W

The derived unit of power in the SI system equal to one joule per second.^[317]^:484

See Power.

[edit] watt-hour - Wh or Whr

The quantity of energy expended by a one watt power flow in one hour (3600 joules).^[318]^:484

See Energy.

Note Not always hyphenated.

[edit] wheeling

maybe ^[319]^:488

[edit] white body

A theoretical object that reflects all incident radiation

See absorptivity, reflectivity,transmissivity.

Compare black body, gray body.

[edit] wholesale

[edit] work

probably ^[320]^:495

[edit] working fluid

maybe ^[321]^:495

[edit] zenith

probably ^[322]^:498

[edit] zone heat

probably ^[323]^:499

[edit] References

Books and journals

Hunt, V. Daniel (1979). Energy Dictionary. Van Nostrand Reinhold Company. ISBN 0442273959.
Mazria, Edward (1979). The Passive Solar Energy Book. Rodale Press. ISBN 0878572384.
Schittich, Christian (2003). Solar Architecture (Strategies Visions Concepts). Architektur-Dokumentation GmbH & Co. KG. ISBN 3764307471.

User:Mrshaba/Glossary of solar energy terms

From Wikipedia, the free encyclopedia

[edit] Glossary of solar energy terms

[edit] Abbreviations

[edit] !-9

[edit] 2/3 Power Law

[edit] A

[edit] Absorber

[edit] absorptance

[edit] absorption

[edit] absorption air conditioner

[edit] absorption chiller

[edit] absorption curve

[edit] absorption refrigeration cycle

[edit] absorptivity - α

[edit] acceptor

[edit] activated shelf life

[edit] activation voltage

[edit] active solar

[edit] adiabatic cooling/evaporative cooling

[edit] adjustable set point

[edit] adsorption

[edit] adsorption chiller

[edit] Aerogel

[edit] air change

[edit] air collector

[edit] air mass - AM

[edit] air-only system

[edit] air system

[edit] air velocity

[edit] air-type collector

[edit] air system

[edit] albedo

[edit] alternating current - AC

[edit] alternating current

[edit] altitude

[edit] ambient temperature

[edit] amorphos semiconductor

[edit] amorphous silicon

[edit] amperage interrupt capability

[edit] ampere - A

[edit] ampere-hour - Ah or AH

[edit] angle of incidence

[edit] annual load fraction

[edit] annual solar savings

[edit] anode

[edit] antireflection coating

[edit] apparent day

[edit] array

[edit] array current

[edit] array operating voltage

[edit] ASHRAE

[edit] attenuation

[edit] attenuation factor

[edit] autonomous system

[edit] auxilliary heat

[edit] availability

[edit] available daylighting

[edit] availability factor

[edit] average demand

[edit] avoided cost

[edit] A/V-ratio

[edit] azimuth - Ф

[edit] B

[edit] balance of system - BOS

[edit] band gap

[edit] band gap energy - Eg

[edit] barrel

[edit] barrel of oil equivalent - bboe or BOE

[edit] barrier energy

[edit] base load

[edit] base load power plant

[edit] baseload capacity

[edit] battery

[edit] battery available capacity

[edit] battery capacity

[edit] battery cell

[edit] battery cycle life

[edit] battery energy capacity

[edit] battery energy storage