Preparation and Experimental Study of Composite Phase Change Material for Building Energy Conservation

Abstract:

The building energy conservation has an important role in the energy field. Lightweight materials have been extensively used. By compositing the capric acid (CA) and lauric acid (LA) eutectic and using the expanded perlite (EP) as the matrix, a phase change material (PCM) was prepared and studied in laboratory. The mass fraction of this PCM reached at 60% through direct immersion for 24 hours. Differential scanning calorimeter (DSC) testing results indicated that the melting temperature of the PCM is 18.0°C, and the latent heat is 73.77J/g. From 1000 times cycling and heat-release characteristic test, this PCM was found to be stable well. After 2(wt)% graphite added in, solidification time of the PCM decreased by some 30%, the thermal conductivity improved. Application showed that the PCM has a positive effect on improving indoor environmental temperature.

• Periodical: Advanced Materials Research (Volume 1053)
• Pages: 136-142
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1053.136
• Online since: October 2014
• Authors: Hong Yuan Yan*, Ying Yang
• Keywords: Capric Acid, Lauric Acid, Phase Change Materials (PCM), Thermal Energy Storage

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