Problem 41HP

Turbines, Expanders

Air at 20 m/s, 1500 K, 875 kPa with 5 kg/s flows into a turbine and it flows out at 25 m/s, 850 K, 105 kPa. Find the power output using constant specific heats.

Solution 41HP

Step 1 of 3:

Our aim is to find the power output of a turbine for the given data. Assume that specific heats in the process are constant.

The inlet mass flow rate = 5 kg/s

The inlet pressure P1 = 875 kPa

The inlet temperature T1 = 1500 K

The inlets velocity v1 = 20 m/s

The outlet pressure P2 = 105 kPa

The outlet temperature T2 = 850 K

The outlet velocity v2 = 25 m/s

The constant specific heat Cp0 = 1.004 kJ/kg.K (Table A.5)