Centrifugal Compressor Actual Performance Curve

A centrifugal air compressor operates over a range of flows and discharge pressures. The operating performance curve is shaped by the selected individual internal components and affected by operating conditions such as inlet pressure, inlet temperature, and cooling water temperature.

[@alaasleem2149]

Peace for you. Mr. Eng
I asking for infrared thermetre how i calculate the enthlpy defferenance by using temperature in and out frist stage of 3 stage centrifugal compressor i get those measurements using infrared thermetre..
Thank you

[@RD-uh6tr]

why only discharge pressure change when inlet conditions change, everything will be changing including head when you change the inlet conditions

[@ahmednaeem5338]

Discharge pressure have the same meaning of the head change. For the shaft power or the shaft speed all parameters are included MW, Pin, Pdis, Q, humidity