Heat Transfer and Energy Performance of a PVA Wall Tile Containing Macro-Encapsulated PCM

Pin-Feng Liu,Chi-Ming Lai,Yi-Pin Lin,Chun-Ta Tzeng

doi:10.3390/en9080652

Pin-Feng Liu, Chi-Ming Lai + Show 2 more

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https://doi.org/10.3390/en9080652

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Journal: Energies	Publication Date: Aug 18, 2016
Citations: 12	License type: CC BY 4.0

Affiliation: National Cheng Kung University

Abstract

This study integrated building material engineering, building construction practices, and heat transfer mechanisms to develop a polyvinyl acetate (PVA) based wall tile, containing macro-encapsulated phase change material (macro-encapsulated PCM, macroPCM) and PVA. The heat transfer characteristics and energy performances of the proposed prototype were investigated experimentally. The results indicated that the PVA-based macroPCM wall tile is suitable for use in exterior walls to enhance the thermal performance. The tile shows a lower heat indoor heat flux than other tested similar building materials and increases the time lag of peak load, effectively shifting the summer peak demand.

Highlights

During melting or solidification processes, a phase change material (PCM) can effectively store or release a certain amount of latent heat
The temperature of a PCM can be stably maintained during the latent heat transfer process
This study proposed hopefully be controlled with the absorption and release of PCM latent heat

Summary

Introduction

During melting or solidification processes, a phase change material (PCM) can effectively store or release a certain amount of latent heat. The temperature of a PCM can be stably maintained during the latent heat transfer process. It possibly bridges the gap between energy availability and energy need. A PCM is a feasible material choice in energy storage and thermal management applications. Applications for PCMs include thermal storage systems [1,2,3], integration with building materials for energy management [4,5,6,7], use as a working fluid [8], and use in fireproof engineering, among others. Comprehensive reviews on PCMs, including their thermophysical properties, long-term stability, impregnation methods, current building applications, and their thermal performance analyses, as well as on numerical simulations of buildings with PCMs, can be found in the literature [9,10,11]

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