Water at 2 kg/s is the working fluid in the power cycle shown below. Saturated l

Question

Water at 2 kg/s is the working fluid in the power cycle shown below. Saturated liquid at 10

kPa enters the pump, and other pressures are shown on the diagram.

(a) If the pump is adiabatic and reversible, what is the pump outlet temperature, T2?

(b) If the heat addition to the boiler is QH=6 MW, what is the boiler outlet temperature, T3?

(c) If the turbine is adiabatic and 90% efficient, how much power does it produce, WT?

(d) At what rate is exergy destroyed in the turbine?

(e) What is the overall efficiency of the entire cycle?

Answers:

(a) 46.29?C

(b) 376?C

(c) 1732kW

(d) 163 kW

(e)28.8%

Note I have include the answers, just want to know how to get these answers, and the tables u used.

Explanation / Answer

In the vapor power cycles most generally used functioning fluid is water. Though at high temperatures to acquire high efficiency of vapor power cycle, some other working fluids are employed. At high temperatures few working fluids are employed, that are sodium, mercury, potassium and sodium-potassium mixtures. Amongst these, only mercury has been employed in practice.

For best performance, the working fluid must have the characteristics shown below:

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