Study on the Thermal Performance of a Hybrid Heat Collecting Facade Used for Passive Solar Buildings in Cold Region

Xiaoliang Wang, Bo Lei, Haiquan Bi and Tao Yu
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Xiaoliang Wang: Architecture and Urban Planning College, Southwest Minzu University, Chengdu 610041, China
Bo Lei: School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Haiquan Bi: School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Tao Yu: School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China

Energies, 2019, vol. 12, issue 6, 1-22

Abstract: Passive solar technologies are traditionally considered as cost-effective ways for the building heating. However, conventional passive solar buildings are insufficient to create a relatively stable and comfortable indoor thermal environment. To further increase the indoor air temperature and reduce the heating energy consumption, a hybrid heat collecting facade (HHCF) is proposed in this paper. To analyze the thermal performance of the HHCF, a heat transfer model based on the heat balance method is established and validated by experimental results. Meanwhile, the energy saving potential of a room with the HHCF is evaluated as well. When the HHCF is applied to places where heating is required in the cold season while refrigeration is unnecessary in hot season, the HHCF can reduce the heating need by 40.2% and 21.5% compared with the conventional direct solar heat gain window and the Trombe wall, respectively. Furthermore, a series of parametric analyses are performed to investigate the thermal performance of the room with HHCF under various design and operating conditions. It is found that the thermal performance of the HHCF mainly depends on the window operational schedule, the width and the absorptivity of heat collecting wall, and the thermal performance of the inner double-glass window. The modeling and the parametric study in this paper are beneficial to the design and the optimization of the HHCF in passive solar buildings.

Keywords: hybrid heat collecting facade (HHCF); passive solar building; heat transfer model; thermal performance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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