Talk:Axial compressor

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"Since compression ratio is strongly related to fuel economy, this eightfold increase in compression ratio really does result in an eightfold increase in fuel economy for any given amount of power..." um, right..

Actually all types output which we get after compressor (turbine etc.) can be directly effected by changing mass flow rate thats why we try to increase massflow rate by increasing compression.

why there are always more number of stages in compressor as compared to turbine if we specifically talk about power plants?

[edit] eightfold increase

I've removed the "eightfold increase" stuff, as it is clearly wrong. 40:1 is not 10 times more efficient than 4:1, or early jets would not have had enough fuel to take off. Current jets are what... 25% efficient? Raising their compression to 400:1 will not make themn 250% efficient, I can assure you. I suspect efficiency is proportional to (1 - 1/compression), but I don't know nor can prove this... does someone know how compression factors into the theoretical carnot efficiency at a given temperature? Or does increasing compression mostly just increase power or decrease frontal area? 82.69.54.182 10:53, 6 September 2006 (UTC)