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

Jin Hee Song, Hye Sun Jin, Su Gwang Jeong, Sumin Kim, Seung Yeong Song, Jae Han Lim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number6792621
JournalInternational Journal of Polymer Science
Volume2017
DOIs
Publication statusPublished - 2017 Jan 1

Fingerprint

Graphite
Phase change materials
Concretes
Heat transfer
Heat storage
Computer simulation
Thermal load
Heat losses
Heat transfer coefficients
Specific heat
Thermal conductivity
Hot Temperature
Experiments

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics

Cite this

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abstract = "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.",
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Empirical Validation of Heat Transfer Performance Simulation of Graphite/PCM Concrete Materials for Thermally Activated Building System. / Song, Jin Hee; Jin, Hye Sun; Jeong, Su Gwang; Kim, Sumin; Song, Seung Yeong; Lim, Jae Han.

In: International Journal of Polymer Science, Vol. 2017, 6792621, 01.01.2017.

Research output: Contribution to journalArticle

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