Form-Stable Phase Change Materials Based on Eutectic Mixture of Tetradecanol and Fatty Acids for Building Energy Storage: Preparation and Performance Analysis.

Jingyu Huang,Shangbao Liu,Xiangfei Kong,Shilei Lu,Yiran Li

doi:10.3390/ma6104758

Jingyu Huang, Shangbao Liu + Show 3 more

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https://doi.org/10.3390/ma6104758

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Journal: Materials	Publication Date: Oct 22, 2013
Citations: 87	License type: CC BY 3.0

Affiliation: Tianjin University of Science and Technology

Abstract

This paper is focused on preparation and performance analysis of a series of form-stable phase change materials (FSPCMs), based on eutectic mixtures as phase change materials (PCMs) for thermal energy storage and high-density polyethylene (HDPE)-ethylene-vinyl acetate (EVA) polymer as supporting materials. The PCMs were eutectic mixtures of tetradecanol (TD)–capric acid (CA), TD–lauric acid (LA), and TD–myristic acid (MA), which were rarely explored before. Thermal properties of eutectic mixtures and FSPCMs were measured by differential scanning calorimeter (DSC). The onset melting/solidification temperatures of form-stable PCMs were 19.13 °C/13.32 °C (FS TD–CA PCM), 24.53 °C/24.92 °C (FS TD–LA PCM), and 33.15 °C/30.72 °C (FS TD–MA PCM), respectively, and latent heats were almost greater than 90 J/g. The surface morphologies and chemical stability of form-stable PCM were surveyed by scanning electron microscopy (SEM) and Fourier-transform infrared (FT-IR) spectroscopy, respectively. The thermal cycling test revealed that the thermal reliability of these three form-stable PCMs was good. Thermal storage/release experiment indicated melting/solidification time was shortened by introducing 10 wt % aluminum powder (AP). It is concluded that these FSPCMs can act as potential building thermal storage materials in terms of their satisfactory thermal properties.

Highlights

With the rapid development of construction industry, more and more lightweight building materials are applied in high-rise buildings
Latent heat of form-stable Phase change materials (PCMs) is an important indicator to determine whether this composite can be used or not [15]
Three novel form-stable PCMs based on eutectic mixtures of fatty acid-TD and high-density polyethylene (HDPE)-ethylene-vinyl acetate (EVA) polymer were prepared for thermal storage in building

Summary

Introduction

With the rapid development of construction industry, more and more lightweight building materials are applied in high-rise buildings. Phase change materials (PCMs) with their high heat storage capacity have been considered as potential latent storage materials widely studied in building thermal storage [1]. PCMs absorb redundant heat in daytime, the stored thermal energy release into indoors at night. Several reviews have concluded a large category of candidate materials for latent heat storage [1,2,3,4]. Organic materials such as fatty acids and their eutectic mixtures have superior properties over inorganic materials like litter super cooling, high latent heat, less volume change, good thermal, and chemical stability after repeated cycles [5,6,7,8].

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