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Thermal properties in phase change wallboard room based on air conditioning cold storage

Journal of Central South University 2009年第S1期16卷 193-196页

作者：陈其针刘鑫牛润萍王琳 School of Municipal and Environmental Engineering Shenyang Jianzhu University School of Environmental and Energy Engineering Beijing University of Civil Engineering and Architecture

By comparing the thermal performance parameters of an ordinary wall room with a phase change wall (PCW) room,the effect of phase change wallboard on the fluctuation of temperature in air-conditioning room in summer was studied. And PCW room and an ordinary wall room,which are cooled by air-conditioner,were built up. Differential scanning calorimetry (DSC) was used to test the temperature field and heat flow fluctuation in these rooms. Through analyzing the data tested,it is found that the mean temperature of PCW is lower than that of ordinary wall room by 1-2 ℃,and PCW can lower the heat flow by 4.6 W/m2. Combining phase change material to building envelope can lower the indoor temperature,make the room thermal comfortable,and cut down the turn-on-and-off frequency of air-conditioner,the primary investment and operating costs. It alleviates urgent need of the electric power. Building envelope which contains phase change wallboard can improve the indoor thermal environment,and decrease energy consumption in buildings. Phase change wallboard can make impressive effect on energy efficiency of buildings.

关键词： phase change energy storage phase change wallboard room indoor air temperature cool storage

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Cool storage time of phase change wallboard room in summer

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Journal of Central South University 2009年第S1期16卷 75-79页

作者：冯国会陈其针黄凯良牛润萍王琳 School of Municipal and Environmental Engineering Shenyang Jianzhu University School of Environment and Energy Engineering Beijing University of Civil Engineering and Architecture

More and more attention was paid to phase change energy storage in air conditioning domain and construction energy conservation,and became the focus of the international research. Through the test and analysis of the parameters of the indoor thermal property in phase change wallboard room and ordinary room,the effects of using phase change wallboards on indoor temperature in summer and air conditioning are obtained. The combination of construct enclosure and phase change materials can stabilize indoor temperature,improve indoor thermal comfort,reduce the frequency of the operation of air conditioning facility,cut the initial investment and operation expense,and meanwhile play an practical role in "the power balancing between the peak period and the valley period" policy. Through the experiment and the test of the effects exerted by phase change wallboard room and ordinary room on the indoor thermal environment,it is obtained that the phase change wallboard can reduce the fluctuation range of indoor temperature and the heat flow from the outside into indoor environment in summer. According to the study,it is found that the effect of cool-storing for 5 h is obvious. Through the analysis of the phase change wallboard without air conditioning in daytime,it is obtained that the frequency of the operation of air conditioning in phase change wallboard room is smaller than that in the ordinary room,which can prolong the lifetime of the facility and reduce operation expense.

关键词： phase change energy storage phase change wallboard room thermal storage thermal exchange cool-storage air-conditioning

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Evaluation of Thermal Effect of PCM wallboards by Coupling Simplified Phase Change Model with Design Tool

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Journal of Building Construction and Planning Research 2014年第1期2卷 12-29页

作者： Alain Guiavarch Denis Bruneau Bruno Peuportier Centre Energétique et Procédés MINES Paris Tech Paris France Département TREFLE Institut de Mécanique et d’Ingénierie de Bordeaux Talence France

A simplified PCM wallboard model is coupled to an existing design-oriented model of multi-zone buildings. Using a reference model and a basic simulation configuration, the accuracy of the resulting PCM wallboard-building thermal design tool is evaluated. A new performance indicator, called PCM utilization factor, is then proposed in order to estimate the thermal efficiency of using PCM wallboards in buildings. Using this PCM Utilization factor and a degrees-hours indicator, the ability of the PCM wallboard-building thermal design tool to evaluate the effect of PCM wallboards on heating loads and summer thermal comfort in the early design phase of a project is examined in two real case studies: a family house project and an existing office building. The user-friendliness of this design tool, and the short calculation times it leads to when performing a year-long simulation using a standard office computer, make it a well-adapted tool for sensibility studies or multi-criterion optimization for buildings that contain PCM wallboards.

关键词： Phase Change Material wallboard Thermal Model Dynamic Simulation Summer Comfort Design Tools

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