Design of a Vapour Compression Heat Pump in a Heat Exchanger Network

  • V. R. Pendyala
  • V. S. Patwardhan
Conference paper


It is known that the proper placement of a vapour compression heat pump in a heat exchanger network (HEN) is across the pinch. In this paper a detailed procedure is developed for designing such a heat pump. Design based on the composite curves is first considered. The modification to be used if only selected streams are to be routed to the heat pump is also discussed. The possibility of another pinch developing in the remaining HEN problem is taken into account. Illustrative examples are presented at the end which bring out the details clearly. The present procedure is a useful tool for a designer for designing a HEN with a heat pump from the point of view of overall economics.


Heat Pump Heat Pump System Composite Curve Cold Stream Heat Exchanger Network 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



actual coefficient of performance (=QCO/W)


Rankine coefficient of performance


heat capacity flow rate (kW/°C)


heat load (kW)

Q1 — Q3

refer to Fig. 6


temperature (°C)

T0 — T3

refer to Fig. 6


minimum temperature driving force (°C)


high grade energy (kW)


refer to Fig. 2


cold composite or cold streams






hot composite or hot streams






heat balance error(eq(2))


heat pump effectiveness factor


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Copyright information

© Springer-Verlag Berlin Heidelberg 1991

Authors and Affiliations

  • V. R. Pendyala
    • 1
  • V. S. Patwardhan
    • 1
  1. 1.National Chemical LaboratoryIndia

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