Article (Scientific journals)
Effect of sunshade thermal insulation curtain position and ventilation mode on performance of building with phase change material Trombe wall
Sun, Yafen; Li, Xiaohan; Cai, Wenfeng et al.
2025 • In Applied Thermal Engineering, 263, p. 125403
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Keywords :
Energy-saving; Phase change material; Sunshade thermal insulation curtain; Trombe wall; Ventilation mode; Mechanical Engineering; Fluid Flow and Transfer Processes; Industrial and Manufacturing Engineering
Abstract :
[en] Phase change material Trombe walls cause significant heat loss on winter nights and overheating indoors in the summer. This study proposes a phase change material Trombe wall building with a sunshade thermal insulation curtain, which acts as a shade in summer and insulation to reduce nighttime heat loss in winter. Firstly, the mathematical model of the proposed Trombe wall with the curtain is established by MATLAB, which is based on the implicit difference method and is solved by Newton-Raphson iteration. Then, the building envelope model was established using TRNSYS. The performance of the proposed building in Beijing, China, under different curtain positions and ventilation modes is studied based on the co-simulation of TRNSYS and MATLAB. The results show that for the curtain placed in the air passage and outdoor side, the heating load is reduced by 9.22% and 9.76%, and the cooling load is reduced by 7.54% and 12.98%, respectively, compared with the phase change material Trombe wall buildings without curtains. As latent heat grows, the heating load fluctuates less, and as the phase change temperature increases, it fluctuates more. The cooling load is hardly affected by the phase change temperature or latent heat. In the absence of air conditioning, the average indoor temperature in winter with the curtain placed in the air passage and outdoor side is 1.05℃ and 0.81℃ higher than that in the phase change material Trombe wall room without the curtain, and 4.5℃ and 4.1℃ higher than that in the room without the Trombe wall. It is more beneficial to reduce the cooling load and summertime room temperature with the curtain outside and only-night ventilation. This research can offer ideas for simulating the energy consumption of buildings with complex Trombe wall structures.
Disciplines :
Energy
Author, co-author :
Sun, Yafen;  School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China
Li, Xiaohan  ;  Université de Liège - ULiège > Urban and Environmental Engineering  ; School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China
Cai, Wenfeng;  China Railway Guangzhou Group Co.,Ltd., Guangzhou, China
Zhang, Nan;  School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China ; Tangshan Institute of Southwest Jiaotong University, Tangshan, China
Zhang, Zhaoli;  School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China
Dzhonova, Daniela;  Institute of Chemical Engineering at the Bulgarian Academy of Sciences, Sofia, Bulgaria
Yuan, Yanping;  School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China
Language :
English
Title :
Effect of sunshade thermal insulation curtain position and ventilation mode on performance of building with phase change material Trombe wall
Publication date :
15 March 2025
Journal title :
Applied Thermal Engineering
ISSN :
1359-4311
eISSN :
1873-5606
Publisher :
Elsevier Ltd
Volume :
263
Pages :
125403
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Hebei Provincial Natural Science Foundation
NSCF - National Natural Science Foundation of China
Funding text :
This work was supported by the National Natural Science Foundation of China (No. 52108077), the Natural Science Foundation of Sichuan Province (No. 2023NSFSC0896), and the Hebei Natural Science Foundation, China (No. E2024105026).
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