Steam enters a turbine with 8 MPa and 450 \deg C and leaves at 40 kPa as saturated vapour, the mass flow rate is 30000 kg/h. If the power generated by the turbine is 4500 kW, determine (a)What is the heat loss from the turbine? (b) What is the rate of entropy generation for this process, assume the surrounding temperature is 20 \deg C. (c) If there is no heat loss from the turbine, the rate of entropy generation will decrease or increase? Why?

ENGR.ECONOMIC ANALYSIS
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Steam enters a turbine with 8 MPa and 450 \deg C and
leaves at 40 kPa as
saturated vapour, the mass flow rate is 30000 kg/h. If
the power generated by
the turbine is 4500 kW, determine
(a)What is the heat loss from the turbine?
(b) What is the rate of entropy generation for this
process, assume the
surrounding temperature is 20 \deg C.
(c) If there is no heat loss from the turbine, the rate of
entropy generation will
decrease or increase? Why?
Transcribed Image Text:Steam enters a turbine with 8 MPa and 450 \deg C and leaves at 40 kPa as saturated vapour, the mass flow rate is 30000 kg/h. If the power generated by the turbine is 4500 kW, determine (a)What is the heat loss from the turbine? (b) What is the rate of entropy generation for this process, assume the surrounding temperature is 20 \deg C. (c) If there is no heat loss from the turbine, the rate of entropy generation will decrease or increase? Why?
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