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Efficiency analysis of semi-open sorption heat pump systems

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  • Gluesenkamp, Kyle R.
  • Chugh, Devesh
  • Abdelaziz, Omar
  • Moghaddam, Saeed

Abstract

Sorption systems traditionally fall into two categories: closed (for chilling and heat pumping) and open (for dehumidification). Recent work has explored the possibility of semi-open systems, which can perform heat pumping or chilling while utilizing ambient humidity as the working fluid of the cycle, and are capable of being driven by solar, waste, or combustion heat sources. The efficiencies of closed and open systems are well characterized and can be accurately determined from four temperatures (one for each of the main components—desorber, absorber, condenser and evaporator). In this work, the performance potential of semi-open systems is explored by adapting expressions for the efficiency of closed and open systems to the novel semi-open systems. A key new parameter is introduced, which involves both the ambient dry bulb and ambient dew point temperature, since both are critical to semi-open absorber operation. The dew point temperature is necessary to capture the absorption performance, while the dry bulb temperature is needed to calculate sensible heat transfer with surrounding air.

Suggested Citation

  • Gluesenkamp, Kyle R. & Chugh, Devesh & Abdelaziz, Omar & Moghaddam, Saeed, 2017. "Efficiency analysis of semi-open sorption heat pump systems," Renewable Energy, Elsevier, vol. 110(C), pages 95-104.
    • Handle: RePEc:eee:renene:v:110:y:2017:i:c:p:95-104
    DOI: 10.1016/j.renene.2016.07.075
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    References listed on IDEAS

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    1. Mortazavi, Mehdi & Nasr Isfahani, Rasool & Bigham, Sajjad & Moghaddam, Saeed, 2015. "Absorption characteristics of falling film LiBr (lithium bromide) solution over a finned structure," Energy, Elsevier, vol. 87(C), pages 270-278.
    2. Bigham, Sajjad & Yu, Dazhi & Chugh, Devesh & Moghaddam, Saeed, 2014. "Moving beyond the limits of mass transport in liquid absorbent microfilms through the implementation of surface-induced vortices," Energy, Elsevier, vol. 65(C), pages 621-630.
    3. Peng, Donggen & Zhang, Xiaosong, 2009. "Modeling and performance analysis of solar air pretreatment collector/regenerator using liquid desiccant," Renewable Energy, Elsevier, vol. 34(3), pages 699-705.
    4. Nasr Isfahani, Rasool & Bigham, Sajjad & Mortazavi, Mehdi & Wei, Xing & Moghaddam, Saeed, 2015. "Impact of micromixing on performance of a membrane-based absorber," Energy, Elsevier, vol. 90(P1), pages 997-1004.
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    Cited by:

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    2. Yang, Bo & Yuan, Weixing & Fu, Lin & Zhang, Shigang & Wei, Maolin & Guo, Dongcai, 2020. "Techno-economic study of full-open absorption heat pump applied to flue gas total heat recovery," Energy, Elsevier, vol. 190(C).
    3. Feng, Changling & E, Jiaqiang & Han, Wei & Deng, Yuanwang & Zhang, Bin & Zhao, Xiaohuan & Han, Dandan, 2021. "Key technology and application analysis of zeolite adsorption for energy storage and heat-mass transfer process: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 144(C).

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