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Experimental study and thermo-economic analysis of a novel radiant-convective cooling system.

Author(s) : JIANG T., YOU S., ZHANG H., WEI S., LIU H., WANG Y.

Type of article: IJR article

Summary

Split air-conditioners have limitations in terms of energy efficiency and local comfortability. Radiant cooling systems (RCSs) cannot be used in most residential buildings, due to its lack of space for a central plant room to achieve secondary heat exchange. To overcome these defects, a novel radiant-convective cooling system with the refrigerant-cooling radiant terminal (RCRT) was proposed, which took the advantages of both split air-conditioners and RCSs. Experiments were conducted in a climate chamber to investigate the thermal comfort performance, energy efficiency ratio and economic performance of the proposed system, in comparison with split air-conditioners. The results indicated that the RCRT cooling system could improve the indoor set temperature from 26°C to 28°C, under the same indoor thermal comfort as split air-conditioners. Additionally, the proposed system had higher energy efficiency ratio than split air-conditioners, and the energy saving potential of this system was 8.4%. The initial cost of the RCRT cooling system was higher than split air-conditioners, however, its life cycle cost was lower. The payback period of using the proposed system to replace split air-conditioners was 2.4 years, indicating that adopting the RCRT cooling system was more economical.

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Pages: 505-514

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Details

  • Original title: Experimental study and thermo-economic analysis of a novel radiant-convective cooling system.
  • Record ID : 30029155
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 131
  • Publication date: 2021/11
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2021.06.013
  • Document available for consultation in the library of the IIR headquarters only.

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