EXPERIMENTAL STUDY ON COMBINED HEAT COLLECTION AND COOLING SYSTEM IN SEVERE COLD AND DRY HOT AREAS

Qi Dianwei; Rao Bowen; Xu Feng; Xie Lirong; Zhang Jiaqi

doi:10.19912/j.0254-0096.tynxb.2022-1565

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (1) : 102-108. DOI: 10.19912/j.0254-0096.tynxb.2022-1565

EXPERIMENTAL STUDY ON COMBINED HEAT COLLECTION AND COOLING SYSTEM IN SEVERE COLD AND DRY HOT AREAS

Qi Dianwei^1,2, Rao Bowen¹, Xu Feng¹, Xie Lirong³, Zhang Jiaqi¹

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Abstract

Combining with the climate characteristics of large temperature difference between day and night in Xinjiang region, this paper sets up a set of small solar heat collection - sky radiation cooling dual-purpose system in Urumqi. By comparing the number of PE wind cover film layers and testing the system operating results under different flow rates, the heat collection/cooling potential of dual-purpose device is explored. The test results show that the maximum temperature difference between inlet and outlet of the system is 6.40 ℃ and the maximum instantaneous heat collection power is 721.88 W/m² under the daytime heat collection mode. In the night cooling mode, the maximum inlet and outlet temperature difference is 0.94 ℃, the outlet temperature is 1.43 ℃ lower than the ambient temperature, and the maximum instantaneous cooling power is 50.89 W/m², which provides the possibility for its practical industrial heat collection application and the preparation of high temperature chilled water in the local temperature and humidity independent control air conditioning system.

Key words

radiative cooling / solar heat collection / passive cooling / solar radiation / atmospheric window

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Qi Dianwei, Rao Bowen, Xu Feng, Xie Lirong, Zhang Jiaqi. EXPERIMENTAL STUDY ON COMBINED HEAT COLLECTION AND COOLING SYSTEM IN SEVERE COLD AND DRY HOT AREAS[J]. Acta Energiae Solaris Sinica. 2024, 45(1): 102-108 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1565

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