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http://dx.doi.org/10.6110/KJACR.2016.28.8.305

A Study on the Characteristic of Heat Transfer of PCM(Phase Change Material) at the Simultaneous Charging and Discharging Condition  

Lee, Donggyu (Geothermal Energy Technology Research Center, Chonbuk National University)
Park, Sechang (Korea Construction Equipment Technology Institute(KOCETI))
Chung, Dong-yeol (Thermal & Fluid System Group, Korea Institute of Industrial Technology(KITECH))
Kang, Cheadong (Department of Mechanical Engineering & Geothermal Energy Technology Research Center, Chonbuk National University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.28, no.8, 2016 , pp. 305-310 More about this Journal
Abstract
A thermal storage systems was designed to correspond to the temporal or quantitative variation in the thermal energy demand, and most of its heat is stored using the latent and sensible heat of the heat storage material. The heat storage method using latent heat has a very complex phenomenon for heat transfer and thermal behavior because it is accompanied by a phase change in the course of heating/cooling of the heat storage material. Therefore, many studies have been conducted to produce an experimentally accessible as well as numerical approach to confirm the heat transfer and thermal behavior of phase change materials. The purpose of this study was to investigate the problems encountered during the actual heat transfer from an internal storage tank through simulation of the process of storing and utilizing thermal energy from the thermal storage tank containing charged PCM. This study used analysis methods to investigate the heat transfer characteristics of the PCM with simultaneous heating/cooling conditions in the rectangular space simulating the thermal storage tank. A numerical analysis was carried out in a state considering natural convection using the ANSYS FLUENT(R) program. The result indicates that the slope of the liquid-solid interface in the analysis field changed according to the temperature difference between the heating surface and cooling surface.
Keywords
Phase change material; Natural convection; Simultaneous; Charging and discharging; Computational fluid dynamics;
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Times Cited By KSCI : 1  (Citation Analysis)
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