Compressors, Gas Turbines and Jet Engines
Out of the following, from where you will prefer to take intake for air compressor

From coal yard side
From outside atmosphere at 1°C
From an air conditioned room maintained at 20°C
From a side where cooling tower is located nearby

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Compressors, Gas Turbines and Jet Engines
If p₁ is the pressure of air entering the L.P, cylinder and p₃ is the pressure of air leaving the H.P. cylinder, then the ratio of cylinder diameters for a single acting, two stage reciprocating compressor with complete intercooling is given by

D₁/D₂ = (p₃/p₁)1/4
D₁/D₂ = (p₁/p₃)1/4
D₁/D₂ = (p₁ p₃)1/2
D₁/D₂ = (p₁ p₃)1/4

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