Thermal performance of a novel Trombe wall integrated with direct absorption solar collector based on phase change slurry in winter

Bin Xu, Wen-tao Gan, Yang-liang Wang, Xing-ni Chen, Yue Fei and Gang Pei

Renewable Energy, 2023, vol. 213, issue C, 246-258

Abstract: This research proposes a novel Trombe wall system using direct absorption solar collector based on phase change slurry (DPTW). The dynamic coupling model of the DPTW system is established, and its accuracy is verified. The indoor temperature of the room under heating conditions in January is simulated. Simulation results indicate that the DPTW system has higher indoor thermal comfort. The indoor personnel activity area temperature was within the range of 18.5–24 °C for 148.4 h, which was 167% longer than that of the traditional Trombe wall system (TW). The indoor thermal comfort index PMV is in the range of −0.5∼0.5 for 119.2 h, an increase of 121% compared with the TW system. In addition, the DPTW system reduces the heat load in winter, which is 39% less than that of the TW system in January. The proportion of solar energy utilization is higher, and the solar fraction of the DPTW system can be increased by 45% at lower temperatures. According to the performance of January, the DPTW system is more robust. Therefore, the TW system can be substituted by the DPTW system because the DPTW system can better maintain the indoor temperature and reduce heating energy consumption.

Keywords: Trombe wall; Direct absorption solar collector; Phase change slurry; Thermal comfort; Building energy conservation (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:213:y:2023:i:c:p:246-258

DOI: 10.1016/j.renene.2023.06.008

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