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Abstract:
In this study, a vacuum tube integrated collector-storage solar air heater using lap-joint-type micro-heat pipe arrays and long straight fins as heat exchange component is proposed, and the heat collecting projection area is 0.51 m2. No.52 industrial paraffin is selected as heat storage material and has a mass of 9.8 kg. The design, working principle and thermal responses under the conditions of charging only and discharging only are introduced in detail. In order to meet the practical application requirements of the collector, the experimental conditions are selected in the winter and transition seasons, which are two weather conditions with high heat demand. In addition, the effects of air flow rate and inlet temperature on the discharging performance of the device are also described in detail. The results show that the vacuum tube integrated collector-storage solar air heater has experienced outstanding charging and discharging performance. The average charging and extraction power can reach 294.2 W (576.9 W/m2 of heat collecting area) and 1041.2 W. The total efficiency in the transition season and winter can reach 63.2% and 56.3%. © 2025 Science Press. All rights reserved.
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Source :
Journal of Engineering Thermophysics
ISSN: 0253-231X
Year: 2025
Issue: 3
Volume: 46
Page: 737-743
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SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
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Chinese Cited Count:
30 Days PV: 6
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