Talk:Gas compressor

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[edit] Heat of compressed gas

The heat of a compressed gas does not come from the inefficiany of the machine compressing the gas. I am not sure why you insist on this error but I am not going to get into an edit war with you Mark. —Preceding unsigned comment added by Qaz (talk • contribs) 4 March 2004 (UTC)

[edit] Relative efficiencies

Can anyone provide any figures for the relative efficiency of the various designs of compressor? This is information I for one would find extremely useful.--81.179.91.108 23:55, 16 June 2006 (UTC)

I second the request of the above person. It would seem to me that a piston design would produce much lower efficiencies than a turbine design, but just how much better or worse? I've dug into my thermo books, and can't seem to find anything on excpected mechanical efficiencies. ~ZirbMonkey - 27 June, 2006 read it by Badr AL-Sowayan

I would suggest that you read the Compressor Handbook, Editor: Paul Hanlon, published by McGraw Hill, January 2001, ISBN 0070260052. - mbeychok 07:49, 28 January 2007 (UTC)

I third the request, please. Hanlon's book isn't in any library I can find within 50 miles.Egmonster 05:05, 7 July 2007 (UTC)

It is very difficult to provide the "relative efficiences" requested above. First of all, there many differnt types of efficiency in use, for example: adiabatic efficiency, isentropic efficiency, polytropic efficiency, isothermal efficiency, volumetric efficiency, mechanical efficiency and overall efficiency.

Then there are certain parameters that affect the efficiencies, for example, the specific compression ratio and the percentage of load at which the compressor is operated.

As a generalization encompassing all the many types of compressors and all of the parameters that affect the efficiency, the range of adiabatic efficiencies is from 45% to 95%. Sorry, but I just cannot do any better than that. Perhaps someone else may have a better answer. - mbeychok 21:08, 7 July 2007 (UTC)

In the gas turbine business, efficiencies are usually quoted at the design point (often peak efficiency) and as polytropic efficiency which normalises for compression ratio. Decision on which type of compressor to use usually depends on flow rate and pressure ratio required. However, axial compressors are slightly more efficient (up to low 90s) than centrifugal (high 80s) for flows greater than a certain size. Of course, any benefit in efficiency comes at a cost.AlekH (talk) 23:30, 15 February 2008 (UTC)

[edit] Hydrogen compressor

The section, hydrogen compressor is missing. Mion 16:47, 31 July 2006 (UTC)

[edit] Air quality test

I need help. Carrying out an Air Quality Test of air compressed into an SCBA cylinder. The water value reads 180mg/m3. The cylinder is 9kg in size. The Standard required in the vessel where I work (FPSO is 30mg/m3. How is this possible for God's sake! Give me a clue. The test time is 10 Minutes using Drager kit. The instruction in the water tube is of October 2005. Is there a way of converting mg/m3 to ppm? Pls let me know. My email address is: mandupakpan@yahoo.com —Preceding unsigned comment added by 80.94.111.145 (talk • contribs) 9 January, 2007 (UTC)

Read this Wikipedia article: click here ==> Useful conversions and formulas for air dispersion modeling#Converting air pollutant concentrations. It has exactly what you are looking for. - mbeychok 18:25, 19 January 2007 (UTC)

[edit] Reason for changing photograph

I replaced the original photo with a better one of a single-stage centrifugal compressor because I thought the original photo was a rather scruffy looking photo of small portable air compressor. I think the photo that I used is much cleaner and neater, and more representative of the thousands of compressors in industrial use. If anyone has a better one in color, that would be better yet. - mbeychok 08:03, 19 January 2007 (UTC)

[edit] How do Thermal expansion or Decompression relate to Gas compressor ??

I think that some of us get carried away with providing Wiki links. I just read the Thermal expansion article very thoroughly. It is obviously about the thermal expansion of liquids and solids. I fail to see any relation between that article and this article on Gas compressors. The lead-in sentence of this article about gas compressors states: A gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume.

An article about the thermal expansion of liquids or the thermal expansion joints in bridges and railroads has no absolutely no beneficial connection whatsoever with this article. Wiki links in the "See also" section are meant to point the reader to related articles with some real, beneficial connection to gas compressors.

I also feel the same is true of the link to the Decompression article. It has no connection to gas compressors. I think it behooves all of us, myself included, to be more careful about adding unrelated links to the "See also" section of any articles. What do others think about this subject? - mbeychok 00:36, 29 January 2007 (UTC)

[edit] Split air conditioner compressor

We want to know about Split Air Conditioner Compressor. Whether it is Vapour compressor. —Preceding unsigned comment added by 220.226.5.225 (talk • contribs) 2 May 2007 (UTC)

If it is compressing a gaseous refrigerant, then it is indeed a gas or vapour compressor. - mbeychok 15:37, 2 May 2007 (UTC)

[edit] Air end (also spelled as airend)

This is a compressor-related term. Can someone tell me what exactly means? —Preceding unsigned comment added by Mazarin07 (talk • contribs) 26 May 2007 (UTC)

A packaged air compression system or a field-installed air compression facility includes a number of components: a control panel, a motor or other driver, a suction air filter, the air compression chamber, a discharge air-lubricant separator, compressed air after-cooler, lubricant cooler, compressed air dryer, compressed air filter and a compressed air receiver vessel. The air end is the air compression chamber. See Improving Compressed Air System Performance and scroll down to page 8 of 128. - mbeychok 19:09, 26 May 2007 (UTC)

[edit] Turkish Wikipedia user Metal Militia has been giving wrong information on "Compressor" subject in Turkish version

In Turkish version of Wikipedia free Enclylopedia, the "Kompresör" subject (in English "Compressor") your some internal users (of Vikipedi/Turkey) like a guy with Metal Milia nick name and some others, have been spoiling correct information and redirecting the Compressor subject to gas compressors wrongly.

Many times i had corrected the mistake and i had written Compressor subject in Turkish with my 17 years experience on Compresssor production and technical document translation.

I had written a very good atricle and simple but detailed information and explation of compressors, air compressors with my own world and private informtion as free support article to Wikipedia project as i had noticed on the article.

I had prepared the article a mixcing of my expereience and full original principles and information from leading compresıor manufatures. But article was full free and original by me. it was not a copy/paste or copyright violation.

(refencences: BCAS Compresssed Air Guide, Compressed Air Compendium, Turkish Mechanical Engineers Chamber Book "compressors", Compair BroomWade, Cooper Cameron etc. compressor manufacturer's common/publich product information. And of cource, full original information by me... as private..)

I am sure my article was 100% correct and no body could say it as wrong information or details.

At first, somebodies who say we are competent of turkish vikipedia, detletd my article and put a wrong or defective information instead of it.

They wrote me, you did not notice your information page -article- has GNU GPL. I wrote them, my article is full free by me... I tis nly by me... Ther is not need to declare GNU GPL because of wikipedia author of information is me, and it is only a wikipedşia subect there is no copy of it in anywhere expet wikipedia itself...

Even if I say, my article is recent best explanation in compressor subject in Turkish, you must support it with images and other corrections.

due to possible competition purpose (to prevent common access to information by me) -these guys may be working for competitor companies in Turkey which are manufactiring compressors as comperetior to the company which i am working for...) [ Even if i dont do advertisment of the comany... They -may be- want to prevent customers access to me by this article... ]

"kompresör" keyword is under common advertisment request in google search motor. And turkish "kompresör" subject of wikipedia encylopedia is on the first page of the searched/found pages.

Before they spoiled the article... It was a link to my non-professional web ste sections in non-profession singlix web site. These web pages have information about compresors and compressed air.

So, at the beginning of the compretition attack they erased thesinglix web site kompresor section link on wikipedia "kompresör" article...

Then they eraded the complete arti,cle and they put a wrong and short (defective) article instead of full usefull information on engineering level. The current information is just a like a first school explation of compressors. But, we know the information oabout compressors is needed by engineers and technicians, commonly... (Compressor information is not a first school or children lesson subject, so it was prepared by experinced engineers.)

I am an experienced mechanical engineer and expert on Compressors and compressed air subjects.

I am very sad due to somedies deleted my article without honesty or without sicientific/technologic correction requirements.

In Turkey, usually, non qualified and non sufficent people have competent rights. Just as yout turkish vikiedy editors (competent users) Metal Militia and others who write compessor or gas compressors article without what is compressors and gas compressors, enoughly.

Please interfe to turjish vikipedi project against the wrong staff employment/organizationing/building.

Also, i would like to see correct information on "kompresör" subject just as i had written on/about it. on Wikipedia pages...

Regards... Erdogan Tan
Retrieved from "http://en.wikipedia.org/wiki/Talk:Compressor" —Preceding unsigned comment added by 85.97.52.210 (talk) 19:36, 24 October 2007 (UTC)

[edit] conservation of energy

one thing we should keep in mind, all gaseous and liquid compression / expansion processes are governed by the energy equqtion .

NAVER STOKES EQUQTION gives us the basic parameter matrex by which we play to simplefy our game. 193.191.219.80 (talk) 09:22, 14 May 2008 (UTC)