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Question

The schematic of a two stage air compressor with an intercooler is shown.

The temperature of air after first stage compression is _____°C. (Assume all process to be ideal and optimal)
  1. 157.94

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Solution

The correct option is A 157.94


Since intercooling is optimal.

P2=P1P4=100×1600=400 kPa

Also compression in compressor 1 is reversible and adiabatic.

T2=T1(P2P1)γ1/γ=290×(400100)0.4/1.4=430.94 K

T2=157.94C

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