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Performance of a gas engine driven heat pump for hot water supply systems

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  • Elgendy, E.
  • Schmidt, J.
  • Khalil, A.
  • Fatouh, M.

Abstract

The present work aimed at evaluating the experimental performance of a gas engine heat pump for hot water supply. In order to achieve this objective, a test facility was developed and experiments were performed over a wide range of ambient air temperature (10.9–25.3 °C), condenser water inlet temperature (33–49 °C) and at two engine speeds (1300 and 1750 rpm). Performance characteristics of the gas engine heat pump were characterized by water outlet temperatures, total heating capacity and primary energy ratio. The reported results revealed that hot water outlet temperature between 35 and 70 °C can be obtained over the considered range of the operating parameters. Also, total heating capacity and gas engine heat recovery decrease by 9.3 and 27.7%, respectively, while gas engine energy consumption increases by 17.5% when the condenser water inlet temperature changes from 33 to 49 °C. Total heating capacity, gas engine heat recovery and gas engine energy consumption at ambient air temperature of 25.3 °C are higher than those at ambient air temperature of 10.9 °C by about 10.9, 6.3 and 1.5% respectively. Moreover, system primary energy ratio decreases by 15.3% when the engine speed changes from 1300 to 1750 rpm.

Suggested Citation

  • Elgendy, E. & Schmidt, J. & Khalil, A. & Fatouh, M., 2011. "Performance of a gas engine driven heat pump for hot water supply systems," Energy, Elsevier, vol. 36(5), pages 2883-2889.
    • Handle: RePEc:eee:energy:v:36:y:2011:i:5:p:2883-2889
    DOI: 10.1016/j.energy.2011.02.030
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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. Sanaye, Sepehr & Chahartaghi, Mahmood, 2010. "Thermal modeling and operating tests for the gas engine-driven heat pump systems," Energy, Elsevier, vol. 35(1), pages 351-363.
    3. Greyvenstein, Gideon P. & Meyer, Josua P., 1991. "The viability of heat pumps for the heating of swimming pools in South Africa," Energy, Elsevier, vol. 16(7), pages 1031-1037.
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    5. 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.
    6. 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.
    7. 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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    Cited by:

    1. Elgendy, E. & Schmidt, J. & Khalil, A. & Fatouh, M., 2011. "Modelling and validation of a gas engine heat pump working with R410A for cooling applications," Applied Energy, Elsevier, vol. 88(12), pages 4980-4988.
    2. Bartosz Pawela & Marek Jaszczur, 2022. "Review of Gas Engine Heat Pumps," Energies, MDPI, vol. 15(13), pages 1-16, July.
    3. Sanaye, Sepehr & Chahartaghi, Mahmood & Asgari, Hesam, 2013. "Dynamic modeling of Gas Engine driven Heat Pump system in cooling mode," Energy, Elsevier, vol. 55(C), pages 195-208.
    4. Amiri Rad, Ehsan & Maddah, Saeed & Mohammadi, Saeed, 2020. "Designing and optimizing a novel cogeneration system for an office building based on thermo-economic and environmental analyses," Renewable Energy, Elsevier, vol. 151(C), pages 342-354.
    5. Yang, Zhao & Wu, Xi, 2013. "Retrofits and options for the alternatives to HCFC-22," Energy, Elsevier, vol. 59(C), pages 1-21.
    6. Hervás-Blasco, Estefanía & Navarro-Peris, Emilio & Corberán, José Miguel, 2019. "Optimal design and operation of a central domestic hot water heat pump system for a group of dwellings employing low temperature waste heat as a source," Energy, Elsevier, vol. 188(C).

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