Thermal performance of building element containing phase change material (PCM) integrated with ventilation system – An experimental study
Thermal performance of building element containing phase change material (PCM) integrated with ventilation system – An experimental study
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DOI：
10.1016/j.applthermaleng.2014.05.093
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发表时间：
2014-09
影响因子：
6.4
通讯作者：
M. Jaworski
中科院分区：
文献类型：
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作者：
M. Jaworski
本文介绍了一种新型的吊顶结构，并对其热工性能进行了分析。这个想法是建立一个天花板的形式与平行的内部通道的空气流动厚板。同样重要的是，天花板由含有约27%的相变材料（PCM）的复合材料制成。这样的天花板将是建筑通风系统的一部分-从环境中获取的空气流过通道并与建筑材料交换热量。当适当地选择PCM的熔点时，流入建筑物的空气的温度可能达到对应于热舒适条件的水平，而不管进气口处的温度如何。暖空气（在一天中）基本上将热量释放到PCM，导致其融化。在夜间，冷的环境空气被加热，同时它收回PCM中积累的热量。基于上述概念的实验装置的开发。在不同的条件下（进气温度，空气流量）进行了一系列的测试。本文获得并讨论了天花板的热性能信息以及传热过程的详细数据。
In this paper a new structure of a ceiling panel is described and its thermal performance is presented. The idea is to build a ceiling in the form of thick board with parallel internal channels for air flow. It is also important that a ceiling is made of a composite containing about 27% of phase change material (PCM). Such a ceiling would be a part of a building ventilation system – air taken from the environment flows through the channels and exchange heat with the construction material. When a melting point of PCM is properly chosen it is possible that the temperature of air flowing into the building reach a level corresponding to thermal comfort conditions, regardless the temperature at the intake. Warm air (during a day) release the heat basically to PCM causing its melting. During night time cool ambient air is heated up while it takes back heat accumulated in PCM. An experimental set-up based on the above concept was developed. A series of tests in different conditions (inlet air temperature, air flow rate) were performed. Information on thermal performance of the ceiling panel as well as detailed data on heat transfer process were obtained and discussed in the paper.