Jiang, T;
You, S;
Zhang, H;
Wei, S;
Liu, H;
Wang, Y;
(2021)
Experimental study and thermo-economic analysis of a novel radiant-convective cooling system.
International Journal of Refrigeration
, 131
pp. 505-514.
10.1016/j.ijrefrig.2021.06.013.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | Experimental study and thermo-economic analysis of a novel radiant-convective cooling system |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.ijrefrig.2021.06.013 |
| Publisher version: | https://doi.org/10.1016/j.ijrefrig.2021.06.013 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | refrigerant-cooling radiant terminal; thermal comfort performance; energy efficiency ratio; economic performance |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10130077 |
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