Efficient stationary solar thermal collector systems operating at a medium-temperature range

Yong Sin Kim, Kevin Balkoski, Lun Jiang and Roland Winston

Applied Energy, 2013, vol. 111, issue C, 1079 pages

Abstract: In this paper, a stationary solar thermal collector system using an evacuated glass and a counter-flow tube for medium is modeled, analyzed, fabricated, and tested. The proposed non-tracking system consists of an evacuated counter-flow type absorber paired with an external compound parabolic concentrators (XCPC) as a non-imaging reflector. This configuration allows the system to operate with a high solar thermal efficiency for medium working temperature (100–300°C). Efficiencies for both East–West and North–South orientations are modeled and measured at various working temperatures. Simulation and experimental test results show that the proposed configuration outperforms other non-tracking solar thermal systems and can achieve more than 40% efficiency above 200°C.

Keywords: Solar thermal; Collector; Compound parabolic concentrator; Evacuated tube; Counter-flow; Orientation (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (15)

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DOI: 10.1016/j.apenergy.2013.06.051

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