STUDY ON INFLUENCE OF WALL CONDENSATION ON PERFORMANCE OF FLAT PLATE SOLAR COLLECTOR

Shang Shijie; Wang Dengjia; Zhang Ruichao; Fu Zhiguo

doi:10.19912/j.0254-0096.tynxb.2023-1085

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (11) : 375-383. DOI: 10.19912/j.0254-0096.tynxb.2023-1085

STUDY ON INFLUENCE OF WALL CONDENSATION ON PERFORMANCE OF FLAT PLATE SOLAR COLLECTOR

Shang Shijie¹, Wang Dengjia^1,2, Zhang Ruichao¹, Fu Zhiguo³

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Abstract

This paper has analyzed the energy balance relationship between the components of flat solar collector and considering the condensation conditions of the cover wall, the heat transfer model of flat solar collector is established and validated. This paper has computed the condensation duration and quantity for both the inner and outer wall of the cover plate, and investigated the influence of various climate types and component parameters on the condensation characteristics of the cover plate wall. The results show that there are disparities in condensation characteristics of cover plate wall in different climate types. The annual difference between the maximum and minimum wall condensation amount is 82.03% and condensation hours is 87.21%. The peak condensation heat consumption in a single day amounts to 5.69% of the effective heat collection on the subsequent day. The influence degree of cover plate emissivity, collector inclination angle and heat absorption plate emissivity on cover plate wall condensation diminishes sequentially. These research results can provide theoretical support for inhibiting the condensation of the wall of the flat plate solar collector cover.

Key words

solar collectors / condensation / sensitivity analysis / effective heat collection / computer simulation

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Shang Shijie, Wang Dengjia, Zhang Ruichao, Fu Zhiguo. STUDY ON INFLUENCE OF WALL CONDENSATION ON PERFORMANCE OF FLAT PLATE SOLAR COLLECTOR[J]. Acta Energiae Solaris Sinica. 2024, 45(11): 375-383 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1085

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