Water vapor enters a valve with a mass flow rate

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Reference no: EM13709066

Water vapor enters a valve with a mass flow rate of 1 kg/s at a temperature of 260°C and a pressure of 3.5 MPa, and undergoes a throttling process to 2.75 MPa. (T0 = 25°C, P0 = 100 kPa)

a) Determine the total flow exergy rates at the valve inlet and exit, and the rate of exergy destruction (all in kW).

b) Evaluating exergy at $0.08/kW?hr, determine the annual cost associated with the exergy destruction, assuming 8000 hours of annual operation.

Reference no: EM13709066

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