Fluid Flow in Compressors

In compressors and blowers, pressure changes are large and also the compressible flow occurs. In compression of gases the density changes and so the mechanical energy balance equation must be written in differential form and then integrated to obtain the work of compression. 

Integration between the suction pressure Pj and discharge pressure P2 gives the work of compression. 

For adiabatic compression, the fluid follows an isentropic path and 

Pure water is fed at a rate of 100 Ib/h into a pump at 250°F, 44.7 psia. The exit pressure is 1200 psig. Use the pump module in HYSYS, PRO/II, and Aspen programs to model the pumping process. The pump adiabatic efficiency is 10%. Find the energy required. 

The new outlet temperature of the water is 283.9°F for the 10% efficient pump. Hand calculations and Hysys results are not different from each other. 

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