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Environmental Engineering Research 2003;8(3): 130-140. DOI: https://doi.org/10.4491/eer.2003.8.3.130
NUMERICAL EVALUATION OF ENERGY SYSTEMS AND THERMAL ENVIRONMENTS ON LOW ENERGY ARCHITECTURES AS A STRUCTURAL ELEMENTS OF ECO-POLIS
Yong-Hyun Chung1, Haruo Soeda2, and Junji Onishi2
1Department of Environmental Engineering, Pukyong National University, Busan 608-739, Korea
2Department Intelligent Machine Engineering, Osaka Electro-Communication University, Neyagawa, Osaka, JAPAN
Corresponding Author: Yong-Hyun Chung ,Tel: +82-51-620-6430, Fax: +82-51-620-6430, Email: chungyh@maill.pknu.ac.kr
Received: March 9, 2003;  Accepted: June 2, 2003.
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ABSTRACT
To evaluate the thermal performance of the passive solar room with PCM (phase change material) and a gypsum board as a distributed heat storage system, a numerical model to calculate the transient heat transfer in the PCM walls was developed and incorporated into a CFD code. A simulation code was used in two different ways, one is utilizing a CFD code itself developed by authors and the other is applying a modified version of the CFD code (marcro model). At first, the micro and macro models were compared through evaluating a distributed heat storage system with a passive solar room assuming a winter heating season. The thermal performance of the passive solar room, such as the required energy input or the effect of PCM as a distributed heat storage system, was investigated quantitatively through long period unsteady simulations with the macro model.
Keywords: energy saving | melting point | numerical simulation | passive solar system | PCM
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