STUDY ON EFFECTS OF INSTALLATION CONSTRAINTS ON PERFORMANCE OF BUILDING-INTEGRATED SOLAR CHIMNEYS

Chao Yuncheng; Wang Xing; Pan Xianchao; Zhu Yangli; Guan Yin; Chen Haisheng

doi:10.19912/j.0254-0096.tynxb.2024-2408

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (5) : 778-790. DOI: 10.19912/j.0254-0096.tynxb.2024-2408

STUDY ON EFFECTS OF INSTALLATION CONSTRAINTS ON PERFORMANCE OF BUILDING-INTEGRATED SOLAR CHIMNEYS

Chao Yuncheng^1,2, Wang Xing^1-4, Pan Xianchao^1,2, Zhu Yangli^1-4, Guan Yin^1,2, Chen Haisheng^1-4

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Abstract

The thermo-fluidic performance of Building-Integrated Solar Chimneys （BISC） is influenced by solar collector geometry and chimney off-center configuration. The present investigation employs three-dimensional numerical modelling integrating the realizable k-ε turbulence model with the DO radiation modelling to resolve coupled heat transfer and airflow dynamics in solar chimney （SC） systems, and the accuracy of the numerical model is confirmed by comparing the experimental data with the simulation results from the literature. Applying this validated methodology, a systematic parametric study is conducted on 22 geometrically distinct SC configurations. The results show that for circular collectors, the output power demonstrates significant sensitivity to deviation factor Δd, and the decrease of the output power gradually increases with the increase of Δd, with a maximum reduction of 56.9%. For square collector, the variation of the output power of the SC is affected by Δd in a similar pattern to that of the circular collector, albeit to a lesser extent （52.0%）. In addition, the output power of the SC for the square collector is also affected by the angle factor Δθ. When Δθ is 45°, the output power of SC decreases by a maximum of 43.9% as Δd increases, and an increase in Δθ attenuates the negative effect of an increase in Δd.

Key words

solar chimney / building components / numerical simulation / collector shape / deviation factor / angle factor

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Chao Yuncheng, Wang Xing, Pan Xianchao, Zhu Yangli, Guan Yin, Chen Haisheng. STUDY ON EFFECTS OF INSTALLATION CONSTRAINTS ON PERFORMANCE OF BUILDING-INTEGRATED SOLAR CHIMNEYS[J]. Acta Energiae Solaris Sinica. 2026, 47(5): 778-790 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2408

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