Wang, Dengjia, Liu, Hui, Liu, Yanfeng, Xu, Tao, Wang, Yingying, Du, Hu  ORCID: https://orcid.org/0000-0002-1637-0626, Wang, Xiaowen and Liu, Jiaping
2019.
Frost and high-temperature resistance performance of a novel dual-phase change material flat plate solar collector.
Solar Energy Materials and Solar Cells
201
, 110086.
10.1016/j.solmat.2019.110086
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Abstract
In order to overcome the freezing and overheating problems of solar collectors, a novel dual-phase change material (PCM) flat plate collector was proposed in this research. There were two layers of PCMs in the solar collector, one layer material with a phase change temperature of 70 °C and another with a phase change temperature of 15 °C, respectively. They were placed in the space under the absorber plate in the dual-PCM collector. Frost and High-temperature resistance performance of the novel dual-phase change material solar collector was tested systematically in a laboratory. The experimental results showed that the time taken for the temperature of the absorber plate to increase from 60 °C to 78 °C could be prolonged by 1.6 h under high temperature conditions. Furthermore, the low-melting point PCM can substantially slow the temperature decrease of the collector by solidifying and releasing heat under the low-temperature conditions. And the time taken for the temperature of the absorber plate to decrease from 19 °C to 10 °C could be prolonged by 6.4 h and 3.1 h when low-melting PCM placed below high-melting PCM and the high-melting PCM placed below low-melting PCM. Thus it can be seen that the dual-PCM collector can be used to overcome the phenomenon of overheating and freezing. In addition, compared with an ordinary flat plate collector, the efficiency of the dual-PCM collector was increased by 24.1% and 19.6% when placing low-melting PCM below high-melting PCM and in the opposite condition respectively.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Architecture Research Institutes & Centres > Energy Systems Research Institute (ESURI) |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction T Technology > TS Manufactures |
| Publisher: | Elsevier |
| ISSN: | 0927-0248 |
| Date of First Compliant Deposit: | 16 August 2019 |
| Date of Acceptance: | 27 July 2019 |
| Last Modified: | 01 Dec 2024 00:30 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/124939 |
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