【摘要】 目的为提高冬季农村居民的室内舒适度,改善农居室内局部热环境,降低能耗,减少污染,提出一种新的将相变材料和毛细管网型末端相结合的相变蓄热模块供暖系统.方法根据供水温度和相变材料的填充量的不同组合设计了不同工况,并搭建了对比测试实验平台,对模块蓄放热时间及模块表面温度进行测试和分析.结果相变蓄热模块系统在填充4 kg相变材料、供水温度为50℃时蓄热时间最短,为80 min;在填充5 kg相变材料、供水温度为40℃时的蓄热时间最长,为160 min;在填充5 kg相变材料,供水温度为50℃时的蓄热时间为100 min;在填充4 kg相变材料,供水温度为40℃时的蓄热时间为120 min;填充4 kg和5 kg相变材料的模块系统表面温度保持在25℃以上的持续放热时间分别为8 h和10 h.结论相变蓄热模块供暖系统可联合火炕以及太阳能热水系统、户用小型锅炉等多种低温热源;基于毛细管网的相变蓄热模块能较好的满足用户对模块放热时间的要求,可以有效改善室内局部热环境.更多还原

【Abstract】 In order to improve rural local indoor thermal environment,raise the rural residents’ indoor comfort in winter,reduce the energy consumption and pollution,a newtype of heat storage module combined with phase change materials and capillary network is presented.The heat for the moudule can come from Kang,the solar energy hot water system,a small boiler as well as other lowtemperature heat source.Different combination of experimental platforms are designed according to different water temperature and the quantity of phase change materials.Relevant parameterssuch as the duration of heat storage and release and the surface temperature of the module were tested and analysed.The results showthat the shortest heat storage time occured under the condition that the module was packed with 4 kg of phase change materials and the water supply temperature is 50 ℃,Which is 80 min.While under the condition that the module was packed with 5 kg of phase change materials and the water supply temperature is 40 ℃,the heat storage time go up to 160 min,which is the longest of the tested conditions.The heat storage time of the condition with 5 kg of phase change materials and 50 ℃ heating water and with 4 kg phase change materials and 40 ℃ heating water are 100 min and 120 min respectively.As for the period of heat release,the module surface temperature stay above 25 ℃ packed with phase change materials of 4 kg and 5 kg was 8 h and 10 h respectively.In conclusion,the phase change thermal storage module can meet the users’ continuous heating demands and can improve the local indoor thermal environment effectively.更多还原