两种相变材料储能石膏板的实验研究  

EXPERIMENT STUDY ON TWO KINDS OF PHASE-CHANGE ENERGY-STORING GYPSUM WALLBOARDS

作　　者：王岐东[1] 董黎明[1] 代一心 刘俊女[1] 

机构地区：[1]北京工商大学化学与环境工程学院,北京100037 [2]轻工业人才交流培训中心,北京100833

出　　处：《北京工商大学学报（自然科学版）》2005年第5期4-7,共4页Journal of Beijing Technology and Business University:Natural Science Edition

基　　金：北京市教育委员会科技发展计划项目(02KJ035)

摘　　要：分别以硬脂酸丁酯和相变石蜡为相变材料,聚乙烯醇为分散剂,石膏板为载体,通过直接加入法制备相变储能石膏板.通过差示扫描量热仪分析不同相变储能石膏板的相变温度和相变焓,研究和比较了它们与普通石膏板的隔热保温性能、耐久性能和吸水性能.相变石蜡的储能石膏板相变温度接近于夏季室内舒适温度26℃,相变硬脂酸丁酯的储能石膏板相变温度接近于冬季室内舒适温度21℃.由直接法制备的含22%相变材料的两种相变储能石膏板其储能能力是普通石膏板的10倍,耐久性能优越,吸水性能是普通石膏板的1/3,有利于高湿环境的使用.Two kinds of phase-change energy-storing gypsum wallboards were produced by directly incorporating commercial grade butyl stearate （BS） or phase-change paraffin with poly vinyl alcohol （PVA） as dispersing agents during the process of conventional gypsum board production. Differential scanning calorimeter was applied to analyze phase-change temperature and enthalpy. Heat insulation and preservation, durability and water absorption of these gypsum wallboards were studied and compared with plain wallboards. The phase-change temperature of the wallboards containing phase-change paraffin was closed to 26℃ that was comfortable for people in summer. Meanwhile, The phase-change temperature of the wallboards containing butyl stearate （BS） was closed to 21℃ that was comfortable for people in winter. The energy storing wallboard by the direct incorporation of 22% butyl stearate（BS） or phase-change paraffin has a ten-fold increase in capacity for the storage and discharge of heat when compared with gypsum wallboard alone, and has good durability. The water absorption test demonstrates that both products absorb less than 1/3 as much water as plain wallboard does and are, therefore, a potential candidate for use in humid environments.

关 键 词：相变储能 硬脂酸丁酯 相变石蜡 石膏板 制备 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]