相变材料在装配式复合墙体日光温室中的应用研究  

Application of phase change materials in fabricated heterogeneous composite wall solar greenhouse

作　　者：康利改 王文静 李永 郄丽娟 王易军 KANG Ligai;WANG Wenjing;LI Yong;QIE Lijuan;WANG Yijun(School of Civil Engineering,Hebei University of Science and Technology,Shijiazhuang,Hebei 050018,China;Innovation Center of Disaster Prevention and Mitigation Technology for Geotechnical and Structural Systems of Hebei Province(Preparation),Shijiazhuang,Hebei 050018,China;Engineering Technology Research Center for Intelligent&Low-carbon Assembled Building,Shijiazhuang,Hebei 050018,China;Hebei Academy of Building Science Company Limited,Shijiazhuang,Hebei 050227,China;Institute of Economic Crops,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang,Hebei 050051,China)

机构地区：[1]河北科技大学建筑工程学院,河北石家庄050018 [2]河北省岩土与结构体系防灾减灾技术创新中心(筹),河北石家庄050018 [3]智能低碳装配式建筑技术研究中心,河北石家庄050018 [4]河北省建筑科学研究院有限公司,河北石家庄050227 [5]河北省农林科学研究院经济作物研究所,河北石家庄050051

出　　处：《河北科技大学学报》2024年第3期318-327,共10页Journal of Hebei University of Science and Technology

基　　金：河北省省级科技计划资助项目(21327208D)。

摘　　要：为进一步提高日光温室墙体的蓄热能力,改善室内热环境,对石蜡-膨胀珍珠岩复合相变材料(paraffin-expanded perlite composite phase change material, PCM-PE)在温室中的应用进行研究。利用TRNSYS(transient system simulation program)建立装配式复合墙体日光温室的模型,用晴天和阴天的实测数据验证模型准确性,利用该模型分析温室的北屋顶、侧墙、北墙等结构内表面分别添加PCM-PE后室内温度的变化和单位成本,及温室北屋顶、侧墙和北墙均添加PCM-PE时的最佳厚度。结果表明:温室不同结构内表面添加PCM-PE均对室内平均温度有明显提升作用,侧墙内表面添加PCM-PE使晴天时室内平均温度提高1.32℃,单位成本最低,为2 094元/℃;北屋顶、侧墙、北墙均添加PCM-PE时,其最佳厚度为50 mm,晴天室内平均温度和北墙平均温度分别提升3.9和3.7℃,阴天分别提升2.2和2.3℃;添加50 mm PCM-PE后,温室墙体传热系数较试验温室降低了15%,热阻提高了9.9%,对维持室内温度、降低温室能耗具有积极作用。分析温室不同结构应用PCM-PE的效果,同时考虑单位成本,可为建造经济性好、蓄热性能强的温室提供参考。In order to further improve the heat storage capacity of solar greenhouse walls and improve the indoor thermal environment,the application of paraffin-expanded perlite composite phase change material(PCM-PE)in greenhouses was studied.The transient system simulation program(TRNSYS)was used to build a model of a fabricated composite wall solar greenhouse,and measured data from sunny and cloudy days were used to verify the accuracy of the model.The model was used to analyze the changes in indoor temperature and the unit cost of the greenhouse after PCM-PE was added to the inner surfaces of the structures,such as the north roof,the side walls,and the north wall,respectively,as well as the optimal thickness of the greenhouse when PCM-PE was added to the north roof,the side walls,and the north wall.The results show that the addition of PCM-PE to the inner surfaces of different greenhouse structures has a significant effect on increasing the average indoor temperature,and the addition of PCM-PE to the inner surfaces of the side walls makes the average indoor temperature increase by 1.32℃on sunny days,with the lowest unit cost of 2094 Yuan/℃;When PCM-PE is added to the north roof,side wall,and north wall with an optimal thickness of 50 mm,the average indoor temperature and the average temperature of the north wall increase by 3.9℃and 3.7℃on sunny days,and by 2.2℃and 2.3℃on cloudy days,respectively;After adding 50 mm PCM-PE,the heat transfer coefficient of the greenhouse wall is reduced by 15%and the thermal resistance increases by 9.9%compared with that of the test greenhouse,which has a positive effect on maintaining the indoor temperature and reducing the energy consumption of the greenhouse.The effect of applying PCM-PE to different structures of greenhouses is analyzed considering the unit cost,which provides some reference for constructing greenhouses with good economy and high heat storage performance.

关 键 词：复合建筑材料 日光温室 室内温度 北墙温度 单位成本 

分 类 号：TU261[建筑科学—建筑设计及理论]