EXPERIMENTAL STUDY ON HEAT PIPE VACUUM TUBE COLLECTOR WITH REFLECTOR

Wang Yu; Wang Enyu; Shen Haixiao; Zhang Xueyou; Cheng Yongchang; Dong Shujin

doi:10.19912/j.0254-0096.tynxb.2021-1394

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (4) : 472-478. DOI: 10.19912/j.0254-0096.tynxb.2021-1394

EXPERIMENTAL STUDY ON HEAT PIPE VACUUM TUBE COLLECTOR WITH REFLECTOR

Wang Yu, Wang Enyu, Shen Haixiao, Zhang Xueyou, Cheng Yongchang, Dong Shujin

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Abstract

In order to explore the effect of the reflector on the heat collection capacity of solar heat pipe vacuum pipe collector, taking a solar collector with reflector constructed by 12 heat pipe vacuum pipes of Φ58 mm×1800 mm as the research object, the heat collection capacity of the collector with corrugated, flat, corrugated-flat reflector and without reflector were experimentally investigated under sunny and cloudy condition. The experiment results show that the daily heat collection capacity of the collector with corrugated reflector is 25.19% and 26.50% higher than that without reflector under sunny and cloudy condition, 1.15% and 1.00% higher than that of flat reflector, 10.32% and 9.96% higher than that of corrugated-flat reflector. The hourly heat collection capacity of the collector with corrugated-flat reflector is the smallest, and the heat collection capacity of the collector with corrugated and flat reflector is different at different time. When the collector has no heat loss to the environment, the heat collection efficiency of the collector with corrugated, flat and corrugated-flat reflector is 10.37%, 8.94% and 4.15% higher than that without reflector, respectively.

Key words

solar collector / heat pipe / collector efficiency / reflector / normalized temperature difference

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Wang Yu, Wang Enyu, Shen Haixiao, Zhang Xueyou, Cheng Yongchang, Dong Shujin. EXPERIMENTAL STUDY ON HEAT PIPE VACUUM TUBE COLLECTOR WITH REFLECTOR[J]. Acta Energiae Solaris Sinica. 2023, 44(4): 472-478 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1394

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