氯化钙/膨胀石墨混合吸附剂导热性能研究  

Study on Thermal Conductivities of CaCl_2/ENG Composite Adsorbents

作　　者：高佼[1] 何燕[1] 林艳[1] 杨晓[1] 

机构地区：[1]青岛科技大学机电工程学院,青岛266061

出　　处：《制冷学报》2013年第4期93-95,共3页Journal of Refrigeration

摘　　要：研究出具有良好的导热性能的吸附剂是吸附制冷的关键。利用耐驰LFA447导热仪测试了不同质量配比(氯化钙与膨胀石墨的质量比)和不同固化压力下氯化钙—膨胀石墨固化混合吸附剂的导热性能。实验结果表明:在一定范围内,在相同的质量比下随着固化压力的增大,导热系数不断增大;在相同的固化压力下随着氯化钙—膨胀石墨质量比的增大导热系数不断减小。在测试的所有样品中,当固化压力为1.7kN,氯化钙—膨胀石墨的质量比为2∶1时,混合吸附剂的导热性能比较好,导热系数达到2.7 W/(m·K)In order to study on the heat transfer performance of CaC12/ENG, the solidified composite adsorbents with 4 different molding pressure and 3 different kinds of ratio between CaC12 and expanded natural graphite have been developed. Meanwhile thermal conductivity of samples is tested with Nai Chi LFA447 conductivity Meter. The experiment results show that ： in a certain range, the thermal conductiv- ity increases with the increase of molding pressure under the same ratio and the thermal conductivity decreases with the ratio increases un- der the same molding pressure. In all the test samples, the thermal conductivity of consolidated composite adsorbents is reached its highest 2.7 W/（m.K） when molding pressure is 1.7kN and the ratio of CaC12/ENG is 2： 1.

关 键 词：导热性能 混合吸附剂 固化压力 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TB64[动力工程及工程热物理—热能工程]