A certain industrial process requires a steady 0.5 kg/s of
Chapter 7, Problem 176HP(choose chapter or problem)
Problem 176HP
A certain industrial process requires a steady 0.5 kg/s of air at 200 m/s at the condition of 150 kPa, 300 K, as shown in Fig. P7.176. This air is to be the exhaust from a specially designed turbine whose inlet pressure is 400 kPa. The turbine process may be assumed to be reversible and polytropic, with polytropic exponent n = 1.20.
FIGURE P7.176
a. What is the turbine inlet temperature?
b. What are the power output and heat transfer rate for the turbine?
c. Calculate the rate of net entropy increase if the heat transfer comes from a source at a temperature 100° C higher than the turbine inlet temperature.
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