The Mechanical Engineering Handbook



Heat Rejected in Condensor (Isobaric Heat Rejection)

Heat Rejected in Condensor (Isobaric Heat Rejection) Equation



$$ Q_{out} = h_4 - h_1 $$ where:

Qout   =   Heat rejected in the condenser   (J)

h4   =   Enthalpy of steam entering the condensor   (J)

h1   =   Enthalpy of the liquid exiting the condensor   (J)


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Equation Assumptions



  • The system is in steady state.
  • Working fluid behaves as an ideal gas.
  • There are no heat losses to surroundings.
  • Specific heats remain constant.