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Experimental investigation of a multi-function heat pump under various operating modes

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  • Cho, Changyong
  • Min Choi, Jong

Abstract

Heat pumps have been spotlighted as efficient building energy systems because they have great potentials for energy reduction in building air conditioning and reducing CO2 emission. In this study, a multi-function heat pump which has the functions of heating, cooling, and hot water supply was designed and its performance was investigated according to operating modes. In the cooling-hot water mode, the capacity and COP were enhanced as compared to other modes because the waste heat from the outdoor heat exchanger was utilized as useful heat in the indoor heat exchanger. In the heating and hot water supply mode, the compressor speed should be increased to get appropriate heating and hot water capacities. For all operating modes, the system could be optimized by adjusting the superheat.

Suggested Citation

  • Cho, Changyong & Min Choi, Jong, 2013. "Experimental investigation of a multi-function heat pump under various operating modes," Renewable Energy, Elsevier, vol. 54(C), pages 253-258.
    • Handle: RePEc:eee:renene:v:54:y:2013:i:c:p:253-258
    DOI: 10.1016/j.renene.2012.07.017
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    References listed on IDEAS

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    1. Chua, K.J. & Chou, S.K. & Yang, W.M., 2010. "Advances in heat pump systems: A review," Applied Energy, Elsevier, vol. 87(12), pages 3611-3624, December.
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    1. Jie, Ji & Jingyong, Cai & Wenzhu, Huang & Yan, Feng, 2015. "Experimental study on the performance of solar-assisted multi-functional heat pump based on enthalpy difference lab with solar simulator," Renewable Energy, Elsevier, vol. 75(C), pages 381-388.
    2. Boahen, Samuel & Anka, Selorm Kwaku & Ohm, Tae In & Cho, Yong & Choi, Jong Woong & Kim, Han-Young & Choi, Jong Min, 2023. "Capacity control of a cascade multi-purpose heat pump using variable speed compressor," Renewable Energy, Elsevier, vol. 205(C), pages 945-955.
    3. Boahen, Samuel & Anka, Selorm Kwaku & Lee, Kwang Ho & Choi, Jong Min, 2021. "Performance analysis of cascade multi-functional heat pump in summer season," Renewable Energy, Elsevier, vol. 163(C), pages 1001-1011.
    4. Cai, Jingyong & Ji, Jie & Wang, Yunyun & Huang, Wenzhu, 2016. "Numerical simulation and experimental validation of indirect expansion solar-assisted multi-functional heat pump," Renewable Energy, Elsevier, vol. 93(C), pages 280-290.

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