This Demonstration illustrates the operation of a reciprocating compressor from a thermodynamics viewpoint. The compressor has an intercooler stage, receives air at atmospheric pressure, 273 K, and has a constant mass flow rate of 20 kg/min. Assume an ideal gas—air—with constant specific heat and compression processes that are isentropic. Vary the mass flow rate, required output pressure, input temperature, and efficiency to see the changes in temperature and required power.