An experimental study on the application of polyalcohol solid-solid phase change materials in solar drying with cross-corrugated solar air collectors

Gao, W.F., Lin, W.X., Liu, T., and Li, M. (2017) An experimental study on the application of polyalcohol solid-solid phase change materials in solar drying with cross-corrugated solar air collectors. In: IOP Conference Series: Earth and Environmental Science (93) From: NEFES 2017: 2nd International Conference on New Energy and Future Energy Systems, 22-25 September 2017, Kunming, China.

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Abstract

In this paper, two identical solar driers with the same cross-corrugated solar air collectors and drying chamber were developed, one with phase-change materials (PCMs) and the other without PCMs. These two solar drying systems were tested in typical sunny and cloudy days in Kunming and their thermal performances were analyzed. The experimental results show that the temperature changing is smoother in the collector with the PCMs, which is beneficial for the drying as the useful drying time was prolonged. The same trend was also found in the chamber with the PCMs. The PCMs in solar drying system was found to play a role in temperature regulating. There were several cycles of heat charging-discharging in a cloudy testing day while the temperatures on collectors and in chambers with the polyalcohol PCMs is higher than each phase-change temperature. Nevertheless, there was only one cycle of heat charging-discharging in a sunny testing day. The collector with PCMs has higher daily useful heat gain than the collector without PCMs.

Item ID: 54067
Item Type: Conference Item (Research - E1)
ISSN: 1755-1315
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Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd.

Date Deposited: 14 Jun 2018 02:23
FoR Codes: 09 ENGINEERING > 0913 Mechanical Engineering > 091305 Energy Generation, Conversion and Storage Engineering @ 100%
SEO Codes: 85 ENERGY > 8505 Renewable Energy > 850506 Solar-Thermal Energy @ 50%
97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 50%
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