相变材料在不同条件下节能效果的实验  

Experimental Study on the Energy-Saving Effects of PCM in the Different Conditions

作　　者：张巨松[1] 刘志鑫[2] 黄灵玺[1] 杨豹[1] 门宇[1] 张娜[1] 

机构地区：[1]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168 [2]中水东北勘测设计研究有限责任公司,吉林长春130061

出　　处：《沈阳建筑大学学报（自然科学版）》2013年第1期116-120,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(50274025);辽宁省教育厅科技攻关项目(11211004)

摘　　要：目的推导相变材料节能率的计算式,探讨不同环境温度、不同功率加热元件、不同相变材料掺量条件下相变材料的节能效果.方法根据相变材料节能特点,建立节能测试系统,通过升/降温实验,对相变材料节能效果进行探讨.结果随着相变材料掺量的降低、环境温度的降低、加热元件功率的增大,相变材料节能率降低.相变材料掺量为2 kg/m2、环境温度为10.8℃、加热元件功率为25 W时,相变系统的节能率最高为15.95%.结论推导出了相变材料节能率的计算式为η=tz.t*st*z.ts-1;;相变材料的节能效果与环境温度、供热速率及其掺量密切相关,环境温度高、供热速率慢、掺量高其节能效果好.The calculation formula on energy-saving rate of phase change material（PCM）is derived,and the energy-saving effects of PCM in different environmental temperatures,different powers of heating elements and different dosages of PCM are discussed.According to energy-saving features of PCM,the testing and measuring system could be designed by myself,energy-saving effects of PCM could be discussed by the heating-up and heating-down experiments.The result indicated that the energy-saving rate of PCM was decreased as the environmental temperature falled down,the dosage of PCM decreased and the power of heating element increased.Its energy-saving rate reached 15.95%,which was the highest,when the dosage of PCM is 2 kg/m2,the environmental temperature is 10.8 ℃ and the power of heating element is 25 W.The calculation formula,which is η=tz·t＊s t＊z·ts-1,on energy-saving rate of PCM has been derived.The energy-saving effect of PCM is closely correlated with the environmental temperature,the dosage of PCM and the power of heating element.The high environmental temperature,the low heating rate and the high dosage of PCM are good at the energy-saving effect of PCM.

关 键 词：相变材料 节能率 环境温度 供热速率 掺量 

分 类 号：TU53[建筑科学—建筑技术科学]