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Direction: Consider a steam power plant using a reheat cycle as shown. Steam leaves the boiler and enters the turbine at 4 MPa, 350°C (h3 = 3095 kJ/kg). After expansion in the turbine to 400 kPa (h4 = 2609 kJ/kg), the steam is reheated to 350°C (h5 = 3170 kJ/kg), and then expanded in a low pressure turbine to 10 kPa (h6 = 2165 kJ/kg) the specific volume of liquid handled by the pump can be assumed to be

  1. The enthalpy at the pump discharge (h2) is
    1. 0.33 kJ/kg
    2. 3.33 kJ/kg
    3. 4.0 kJ/kg
    4. 33.3 kJ/kg
Correct Option: D

Enthalpy at the pump discharge will be greater than 29.3 kJ/kg
Hence from given choice clearly we can say
h2 = 33.3 kJ/kg.



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