Railways Technical Ability Refrigeration and Air-Conditioning Question Bank Refrigeration and Air-Conditioning

  • question_answer In a regenerative cycle, steam with enthalpy of 3514 kJ/kg is expanded in h.p. turbine to a state corresponding to saturated enthalpy of water equal to 613 kJ/kg. If the pump work requirements in high pressure and low pressure zones are respectively 3 and 1 kJ/kg, amount of heat transferred in boiler is:

    A) 2897 kJ/kg                    

    B) 2898 kJ/kg

    C) 2904 kJ/kg                    

    D) 2905 kJ/kg

    Correct Answer: A

    Solution :

    \[{{h}_{boiler}}=3514-\left( 613+4 \right)=2897\,kJ/kg\]

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