Reverse Cycle

  • Y. H. Venus LunEmail author
  • S. L. Dennis Tung
Part of the Green Energy and Technology book series (GREEN)


This chapter aims to examine the innovative development of multiple functions of heat pump with reverse cycle operations. The operating modes of the multiple functions heat pump include dehumidification, ventilation, space cooling and heating, and water heating. Benefits of using this innovative heat pump include: (1) comprehensive functions to provide indoor comfort climate, (2) remote condenser for both heat rejection and heat absorption, (3) integrate air source heat pump with air handling unit, (4) energy saving to use aerothermal for space heating and water heating, and (5) built-in control system. The development of heat pump system is examined. A case study on indoor swimming pool is also presented.


Cooling and dehumidification Dew point cooling Reverse cycle operations Control logic Summer operating mode Winter operating mode 



Energy delivered or energy received


Energy consumption




Entropy generated due to internal irreversibility



Hot side (hot source)


Cold side (cold source)


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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Sustainable Energy LimitedHong KongPR China
  2. 2.Sustainable Energy LimitedHong KongPR China

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