Empirical Validation of Heat Transfer Performance Simulation of Graphite/PCM Concrete Materials for Thermally Activated Building System

To increase the heat capacity in lightweight construction materials, a phase change material (PCM) can be introduced to building elements. A thermally activated building system (TABS) with graphite/PCM concrete hollow core slab is suggested as an energy-efficient technology to shift and reduce the p...

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Bibliographic Details
Published in:International journal of polymer science 2017-01, Vol.2017 (2017), p.1-9
Main Authors: Song, Seung-Yeong, Kim, Sumin, Jeong, Su-Gwang, Jin, Hye-Sun, Song, Jin-Hee, Lim, Jae-Han
Format: Article
Language:English
Subjects:
Buildings
Computer simulation
Concretes
Construction materials
Graphite
Heat transfer
Simulation
Tabs
Thermal properties
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Summary:To increase the heat capacity in lightweight construction materials, a phase change material (PCM) can be introduced to building elements. A thermally activated building system (TABS) with graphite/PCM concrete hollow core slab is suggested as an energy-efficient technology to shift and reduce the peak thermal load in buildings. An evaluation of heat storage and dissipation characteristics of TABS in graphite/PCM concrete has been conducted using dynamic simulations, but empirical validation is necessary to acceptably predict the thermal behavior of graphite/PCM concrete. This study aimed to validate the thermal behavior of graphite/PCM concrete through a three-dimensional transient heat transfer simulation. The simulation results were compared to experimental results from previous studies of concrete and graphite/PCM concrete. The overall thermal behavior for both materials was found to be similar to experiment results. Limitations in the simulation modeling, which included determination of the indoor heat transfer coefficient, assumption of constant thermal conductivity with temperature, and assumption of specimen homogeneity, led to slight differences between the measured and simulated results.
ISSN:1687-9422
1687-9430
DOI:10.1155/2017/6792621