scholarly journals Design improvement of a laboratory prototype for efficiency evaluation of solar thermal water heating system using phase change material (PCMs)

2021 ◽  
pp. 100301
Author(s):  
Greg Wheatley ◽  
Robiul Islam Rubel
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Thermal Water ◽  
Heating System ◽  
Solar Thermal ◽  
Efficiency Evaluation ◽  
Water Heating ◽  
Design Improvement ◽  
Change Material ◽  
Laboratory Prototype

scholarly journals Experimental Investigation on Performance Comparison of Solar Water Heating-Phase Change Material System and Solar Water Heating System

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2347 ◽  
Author(s):  
Liangliang Sun ◽  
Nan Xiang ◽  
Yanping Yuan ◽  
Xiaoling Cao
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Thermal Efficiency ◽  
Heat Storage ◽  
Heating System ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
Solar Water Heating System ◽  
Change Material

Phase change material can be used as heat transfer fluid in the solar water heating system, which is the latest way to improve thermal efficiency. In this paper, graphene composite paraffin emulsion is used as heat transfer fluid in a solar water heating-phase change material (SWH-PCM) system. By comparing with the traditional solar water heating (SWH) system, the thermal performance characteristics of SWH-PCM system have been investigated experimentally. The SWH-PCM system has higher heat storage than the SWH system. The heat storage of SWH-PCM system and SWH system all increase with the increase of solar irradiance, while the thermal efficiency has the opposite trend. The flow rate has a greater influence on the thermal efficiency of SWH-PCM system than that of the SWH system. With the flow rate of 200 L/h, the thermal efficiency of SWH-PCM system is 14.21% higher than that of the SWH system. In summary, the SWH-PCM system is a promising solar water heating system with high heat storage and thermal efficiency.

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