汽车余热利用蓄能材料及其释热特性试验研究  

Research on Phase Change Materials and Thermal Release Characteristic of Thermal Storage by Using Auto Waste Heat

作　　者：高淳[1] 王国华[1,2] 张天时[1] 矫振伟[1] 

机构地区：[1]吉林大学 [2]吉林大学汽车仿真与控制国家重点实验室

出　　处：《汽车技术》2011年第8期38-41,共4页Automobile Technology

基　　金：吉林省科技发展基金重点项目(No.20106004);国家大学生创新性实验计划项目(No.2010A42057)

摘　　要：比较了石蜡和八水氢氧化钡两种材料在蓄热过程中的温变特性和吸热能力,并研究了低温环境下八水氢氧化钡蓄热器在放热过程中的低温释热性能。结果表明,与石蜡相比,八水氢氧化钡蓄热材料更高的导热性能和熔解潜热使它具有更快和更大的瞬时吸热能力,并在初期的大温差下显现出更好的蓄热特性;八水氢氧化钡用于低温环境释热过程的温升作用显著,且在更低的低温环境下具有相对较高的放热总量。Temperature change characteristic and thermal storage ability of barium hydroxide octahydrate and paraffin during thermal storage are compared,and the heat release ability in the low temperature of barium hydroxide octahydrate under low temperature is studied.The results show that compared with paraffin,barium hydroxide octahydrate has better heat conductivity and latent heat of fusion,which make it has faster and greater transient heat-absorption capacity,furthermore,it shows superior thermal storage capacity in greater temperature difference;barium hydroxide octahydrate has obvious function in temperature rise during heat release under low temperatures,and has more heat release in lower temperature environment.

关 键 词：汽车余热 蓄能材料 释热特性 

分 类 号：U463[机械工程—车辆工程]