An experimental study on the heat storage performances of polyalcohols NPG, TAX, PE, and AMPD and their mixtures as solid-solid phase-change materials for solar energy applications

Gao, Wenfeng, Lin, Wenxian, Liu, Tao, and Xia, Chaofeng (2007) An experimental study on the heat storage performances of polyalcohols NPG, TAX, PE, and AMPD and their mixtures as solid-solid phase-change materials for solar energy applications. International Journal of Green Energy, 4 (2). pp. 301-311.

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Abstract

The heat storage performance of polyalcohols NPG (Neopentyl glycol), TAM (Tris(hydroxymethyl) aminomethane), PE (Pentaerythritol), and AMPD (Aminoglycol) and their mixtures as solid-solid phase-change materials for solar energy applications are experimentally investigated by the DSC (differential scanning calorimetry) technique. It is found that pure AMPD is not suitable for practical applications due to its wide ranges of charge and discharge temperatures and its high hygroscopic property. The specific sample preparation process has significant impact on the heat storage performance of the mixtures of polyalcohols. If the experimental samples are prepared with the proper processes, there will usually be only one peak presented in the DSC curves instead of two peaks, as reported by some studies. Due to the poor heat storage performance and high hygroscopic property of AMPD, the binary mixtures of AMPD/NPG and AMPD/TAM do not have practical application values. However, the binary mixtures of AMPD/PE with a high or low weight ratio of AMP still are found to have potential practical application values. The experimental results also show that a mixture of more than two polyalcohols do not have better performances than a binary mixture.

Item ID: 4822
Item Type: Article (Refereed Research - C1)
Keywords: solid-solid phase-change material (PCM); NPG (Neopentyl glycol); TAM (Tris(hydroxymethyl)aminomethane); PE (Pentaerythritol); AMPD (Aminoglycol); differential scanning calorimetry (DSC)
ISSN: 1543-5083
Funders: National Natural Science Foundation of China
Date Deposited: 30 Jul 2009 03:53
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%
85 ENERGY > 8506 Energy Storage, Distribution and Supply > 850602 Energy Storage (excl. Hydrogen) @ 30%
97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 20%
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