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TECHNICAL BRIEFS

Experimental Study on the Thermal Performance of the Shape-Stabilized Phase Change Material Floor Used in Passive Solar Buildings

[+] Author and Article Information
Yinping Zhang1

Department of Building Science, Tsinghua University, Beijing, 100084, P. R. C.zhangyp@mail.tsinghua.edu.cn

Xu Xu, Hongfa Di, Kunping Lin

Department of Building Science, Tsinghua University, Beijing, 100084, P. R. C.

Rui Yang

Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. C.

1

Corresponding author.

J. Sol. Energy Eng 128(2), 255-257 (Jul 25, 2005) (3 pages) doi:10.1115/1.2189866 History: Received March 10, 2005; Revised July 25, 2005

The novel shape-stabilized phase change material (PCM) has the following salient features: large apparent specific heat for the phase change temperature region, suitable thermal conductivity, and the ability to keep the shape stabilized when it undergoes a phase change. In this technical brief, we put forward a kind of shape-stabilized PCM floor that is able to absorb solar radiation energy in the daytime and to release the heat at night in winter. The thermal performance of a prototype room using such a floor was studied. The experiments show that the mean indoor temperature of a room with the PCM floor is about 2°C higher than that of the room without a PCM floor, and the indoor temperature swing range is obviously minimized. Therefore, installing shape-stabilized PCM in a room may increase the degree of thermal comfort and reduce space heating energy consumption in winter. In addition, the experimental results provide data for modeling and simulation research for such PCM floor systems.

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Copyright © 2006 by American Society of Mechanical Engineers
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Figures

Grahic Jump Location
Figure 1

Distribution of the measuring points

Grahic Jump Location
Figure 2

Temperature variation of the rooms with and without shape-stabilized PCM plates (a) without shape-stabilized PCM plates and (b) with shape-stabilized PCM plates

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