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Experimental investigation of a vapor compression heat pump used for cooling and heating applications

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  • Fatouh, M.
  • Elgendy, E.

Abstract

The present work aims at evaluating the performance characteristics of a vapor compression heat pump (VCHP) for simultaneous space cooling (summer air conditioning) and hot water supply. In order to achieve this objective, a test facility was developed and experiments were performed over a wide range of evaporator water inlet temperature (14:26°C) and condenser water inlet temperature (22:34°C). R134a was used as a primary working fluid whereas water was adopted as a secondary heat transfer fluid at both heat source (evaporator) and heat sink (condenser) of the heat pump. Performance characteristics of the considered heat pump were characterized by outlet water temperatures, water side capacities and coefficient of performance (COP) for various operating modes namely: cooling, heating and simultaneous cooling and heating. Results showed that COP increases with the evaporator water inlet temperature while decreases as the condenser water inlet temperature increases. However, the evaporator water inlet temperature has more effect on the performance characteristics of the heat pump than that of condenser water inlet temperature. Actual COP of cooling mode between 1.9 to 3.1 and that of heating mode from 2.9 to 3.3 were obtained. Actual simultaneous COP between 3.7 and 4.9 was achieved.

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  • Fatouh, M. & Elgendy, E., 2011. "Experimental investigation of a vapor compression heat pump used for cooling and heating applications," Energy, Elsevier, vol. 36(5), pages 2788-2795.
    • Handle: RePEc:eee:energy:v:36:y:2011:i:5:p:2788-2795
    DOI: 10.1016/j.energy.2011.02.019
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    References listed on IDEAS

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    1. Garimella, Srinivas, 2003. "Innovations in energy efficient and environmentally friendly space-conditioning systems," Energy, Elsevier, vol. 28(15), pages 1593-1614.
    2. Elgendy, E. & Schmidt, J., 2010. "Experimental study of gas engine driven air to water heat pump in cooling mode," Energy, Elsevier, vol. 35(6), pages 2461-2467.
    3. Sun, Z.G., 2008. "Experimental investigation of integrated refrigeration system (IRS) with gas engine, compression chiller and absorption chiller," Energy, Elsevier, vol. 33(3), pages 431-436.
    4. Elgendy, E. & Schmidt, J. & Khalil, A. & Fatouh, M., 2010. "Performance of a gas engine heat pump (GEHP) using R410A for heating and cooling applications," Energy, Elsevier, vol. 35(12), pages 4941-4948.
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    More about this item

    Keywords

    R134a; Heat pump; Performance; Cooling; Heating; Simultaneous;
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