Thermal performance analysis of a double-channel phase change slurry Trombe wall with seasonal switching, solar energy storage and utilization

Xing-ni Chen, Wen-tao Gan, Zi-qing Shen, Bin Xu and Gang Pei

Renewable Energy, 2025, vol. 248, issue C

Abstract: A novel double-channel Direct absorption solar collector based on Phase change slurry - Trombe Wall (DPTW) was proposed with heating and shading modes for winter and summer. Combined with Phase change material - TW (PCMTW) and traditional TW, the effect of double-channel DPTW on thermal environment and energy consumption was evaluated. Results showed that in winter, the monthly average indoor temperature of DPTW, PCMTW and TW was 18.7, 18.2 and 18.3 °C. DPTW increased the duration of indoor temperature within 18.5–25.5 °C to 21.4 %, nearly twice that of the other two systems. In summer, DPTW decreased the duration of indoor temperature above 26.0 °C to 5.1 %, while the duration of other systems exceeded 10.0 %. Compared to PCMTW and TW, DPTW reduced heating energy consumption by 8.2 % and 3.2 %, as well as reduced cooling energy consumption by 10.6 % and 15.8 %. Three key parameters of phase change slurry (PCS) were optimized, including phase change temperature, volume fraction, and thermal conductivity. Based on optimized PCS, heating and cooling energy consumption of DPTW was further decreased by 18.5 % and 9.4 %. Double-channel DPTW system demonstrated exceptional climate adaptability, with the maximum energy saving rate at 67.1 % and 30.5 % in winter and summer of six cities.

Keywords: Trombe wall; Phase change slurry; Direct absorption solar collector; Thermal environment; Energy saving performance (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148125008808
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:248:y:2025:i:c:s0960148125008808

DOI: 10.1016/j.renene.2025.123218

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().