DESIGN AND APPLICATION OF THIN FILM SOLAR COLLECTORS ON MARS SURFACE

Zhang Bingqiang; Jia Yang; Yang Miao; Zhang Wangjun

doi:10.19912/j.0254-0096.tynxb.2022-0095

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (6) : 315-322. DOI: 10.19912/j.0254-0096.tynxb.2022-0095

DESIGN AND APPLICATION OF THIN FILM SOLAR COLLECTORS ON MARS SURFACE

Zhang Bingqiang^1,2, Jia Yang², Yang Miao³, Zhang Wangjun¹

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Abstract

A thin-film solar collector based on in-situ thermal utilization of solar energy on the Martian surface is proposed in view of the thermal energy shortage of the Mars probe and the difficulties in performance and environmental adaptability of the in-situ thermal utilization. A highly transparent polyimide-film window and selective absorbing coating are adopted for heat collection, while a 3D-printed phase-change device with a high filling factor is adopted for energy storage. The semi-rigid forming design, adaptation to the thermal deformation, and passive decompression are also exploited to solve the problems of dust accumulation on the Martian surface, large thermal strain caused by varying temperatures and rapid decompression during the interstellar flight. Simulations and experiments demonstrate that the solar collector can adapt to the harsh conditions on Mars with a maximum photothermal conversion efficiency of 74.9%, an average daily heat-collection efficiency of 32.5%-49.8%, and a heat collection per unit area of 1105.7-2381.5 Wh/（m²∙sol）.

Key words

solar energy / solar collector / rover / Mars / thermal control

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Zhang Bingqiang, Jia Yang, Yang Miao, Zhang Wangjun. DESIGN AND APPLICATION OF THIN FILM SOLAR COLLECTORS ON MARS SURFACE[J]. Acta Energiae Solaris Sinica. 2023, 44(6): 315-322 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0095

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