A superhydrophobic solar selective absorber used in a flat plate solar collector

A superhydrophobic solar selective absorber used in a flat plate solar collector

A new kind of superhydrophobic (SH) solar selective absorber (SSA) used in a low-temperature flat plate solar collector is proposed. Getting rid of the glass cover can improve the performance of the flat plate solar collector. SSA with a SH coating can maintain the efficiency in a practical outdoor...

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Veröffentlicht in:RSC advances 2017, Vol.7 (54), p.34125-34130
Hauptverfasser: Zhu, Yanqing, Shi, Jifu, Huang, Qizhang, Fang, Yueyun, Wang, Leilei, Xu, Gang
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container_end_page 34130
container_issue 54
container_start_page 34125
container_title RSC advances
container_volume 7
creator Zhu, Yanqing
Shi, Jifu
Huang, Qizhang
Fang, Yueyun
Wang, Leilei
Xu, Gang
description A new kind of superhydrophobic (SH) solar selective absorber (SSA) used in a low-temperature flat plate solar collector is proposed. Getting rid of the glass cover can improve the performance of the flat plate solar collector. SSA with a SH coating can maintain the efficiency in a practical outdoor working environment. The SH coating can be made by a simple Sol–Gel method; the water contact angle of SH SSA can reach up to 157° and the sliding angle is less than 2°. The self-cleaning of SH SSA can be realized by rainwater or natural wind. The solar absorptance of SH SSA is still 89.46% after treating in a neutral salt spray for 48 h, which indicates that SH SSA has good corrosion resistance and is suitable to the outdoor environment. Thermal performance tests show that the flat plat solar collector with SH SSA has excellent thermal performance for low-temperature application.
doi_str_mv 10.1039/C7RA04238H
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title A superhydrophobic solar selective absorber used in a flat plate solar collector
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