夏季昼夜温差较大地区相变墙蓄冷可行性分析  

Feasibility Analysis on Phase Change Cooling Storage in Large Day-and-Night Temperature Difference Area

作　　者：冯国会[1] 曹广宇[2] 于瑾[2] 陈旭东[2] 胡艳军[2] 

机构地区：[1]哈尔滨工业大学市政与环境工程学院,黑龙江哈尔滨150090 [2]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2005年第4期350-353,共4页Journal of Shenyang Jianzhu University：Natural Science

基　　金：辽宁省自然科学基金项目(2001102003);辽宁省外国专家局项目(20042100395)

摘　　要：目的把相变储能技术应用在夏季昼夜温差较大地区,使相变墙夜间通过通风蓄冷,调节室内温度.方法从降低建筑能耗和利用可再生能源的角度出发,选取癸酸(CA)、月桂酸(LA)两种有机混合物作为相变材料,将建筑材料浸入有机相变材料中制成一种新型复合储能构件.对气象数据以及相变材料进行了分析和实验测试.结果通过测试可知选取的有机混合物的相变温度为18.491～24.262℃,符合室内舒适温度范围.通过对气象数据以及对相变材料的实验测试分析可知,昼夜温差较大地区夏季可以应用相变储能墙板实现夜间通风蓄冷,白天吸收室内多余的热量,调节室内温度,提高室内的舒适性.结论相变墙板的应用使室内和室外之间的热流波动幅度减弱,外扰作用时间被延迟,从而可以降低建筑物供暖、空调系统的设计负荷,达到节能的目的.Through the technology of Phase Change in large day-and-night temperature difference area as well as of cooling storage with night ventilation, indoor temperature can be adjusted. In the aspect of reducing building energy consumption and using renewable energy, we choose Capric acid and Lauric acid as phase change material. With walls made of a new kind of construction material, at the same time the climate situation and thermal performance of an experiment PCM wallboard room were tested and analyzed in this study. Through testing, the temperature range of phase change material is from 18. 491℃ to 24. 262℃. The analysis on local climate shows that phase change material wall board can be used to realize night ventilation cooling storage, by absorbing indoor heat day-time, adjusting indoor temperature, improving indoor thermal comfortableness and cutting down thermal load of the building in air conditioning system. The heat flow between inside and outside was reduced and put off, and the disturbing time was put off so as to save energy.

关 键 词：相变储能 昼夜温差 通风蓄冷 空调负荷 建筑能耗 

分 类 号：TK02[动力工程及工程热物理]