Effect of phase change materials on indoor thermal environment under different weather conditions and over a long time
Effect of phase change materials on indoor thermal environment under different weather conditions and over a long time
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不同天气条件下、长时间内相变材料对室内热环境的影响
DOI：
10.1016/j.apenergy.2014.11.078
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发表时间：
2015-02
期刊：
影响因子：
11.2
通讯作者：
Chen Ziguang
中科院分区：
文献类型：
--
作者：
Ling Haoshu;Chen Chao;Wei Shen;Guan Yong;Ma Caiwen;Xie Guangya;Li Na;Chen Ziguang
为评价相变材料对温室室内热环境的影响，采用实验和数值模拟相结合的方法，研究了在采暖季不同天气条件下，相变材料对温室室内热环境的长期影响。在北京典型温室中进行了61 d的连续监测，包括室内空气温度、室外空气温度、太阳辐射、温室围护结构表面温度和土壤温度。在此基础上，采用工作温度、日有效积温、北墙辐照表面温度、相变材料平均温度和日蓄热释热等指标对温室相变材料的性能进行了评价。所有指标都提供了一致的结果，证实了PCM对改善温室室内热环境的长期积极作用。此外，本文还证明了晴朗的天气可以帮助提高PCM的效率，相比多云的天气。
To evaluate the effect of phase change materials (PCMs) on the indoor thermal environment of greenhouses under different weather conditions and over a long time in the heating season, a study was carried out using both experimental method and numerical method. The study was conducted in a typical greenhouse located in Beijing, China, and important parameters have been monitored continuously for 61 days, including indoor air temperature, outdoor air temperature, solar radiation, surface temperature of greenhouse envelopes and soil temperature. Based on these parameters, a number of indicators, namely, operative temperature, daily effective accumulative temperature, irradiated surface temperature of the north wall, average temperature of PCMs, and daily heat storage and release, have been used to evaluate the performance of PCMs in greenhouses. All indicators have provided consistent results that confirm the positive effect of PCMs on improving the indoor thermal environment of greenhouses over a long time. Additionally, the paper has demonstrated that a sunny weather could help to promote the efficiency of PCMs, comparing to a cloudy weather.
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