Question

A water-cooled air compressor takes air in at 20°C, 90 kPa and compresses it to 500 kPa. The isothermal efficiency is 80% and the actual compressor has the same heat transfer as the ideal one. Find the specific compressor work and the exit temperature.

Answer 1

Ideal isothermal compressor exit 500 kPa, 20°C Reversible process: dq = T ds => q = T(se – si)