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Dynamic modeling of Gas Engine driven Heat Pump system in cooling mode

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  • Sanaye, Sepehr
  • Chahartaghi, Mahmood
  • Asgari, Hesam

Abstract

The Gas Engine driven Heat Pump (GEHP) operating cycle is a vapor compression refrigeration type which includes compressor, condenser, expansion valve, evaporator, and a gas engine to drive the compressor. In the present work, the dynamic modeling of GEHP system during startup in cooling mode is performed and variation of evaporator and condenser temperatures, shaft power consumed by compressor, engine fuel consumption, and primary energy ratio of system were determined at various time steps. The dynamic modeling included transient heat transfer equations for condenser and evaporator for computing the evaporator and condenser temperatures. These equations were solved using Runge–Kutta method. In order to validate dynamic modeling, the modeling output results were compared with the empirical results obtained for a GEHP system. The comparison of modeling results and the experimental measured values for various amounts of evaporator and condenser temperatures, cooling capacity, gas engine fuel consumption, shaft power consumed by compressor and primary energy ratio of system showed average difference values of 1.73 °C, 1.26 °C, 8.05%, 9.51%, 9.27% and 7.15% respectively.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:energy:v:55:y:2013:i:c:p:195-208
    DOI: 10.1016/j.energy.2013.03.074
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    References listed on IDEAS

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    1. 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.
    2. 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.
    3. Hepbasli, Arif & Erbay, Zafer & Icier, Filiz & Colak, Neslihan & Hancioglu, Ebru, 2009. "A review of gas engine driven heat pumps (GEHPs) for residential and industrial applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(1), pages 85-99, January.
    4. 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.
    5. 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.
    6. 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.
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    Cited by:

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    4. Ibrahim, Oussama & Fardoun, Farouk & Younes, Rafic & Louahlia-Gualous, Hasna, 2014. "Air source heat pump water heater: Dynamic modeling, optimal energy management and mini-tubes condensers," Energy, Elsevier, vol. 64(C), pages 1102-1116.

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