CAJ | 학술논문

以石墨泡沫(Graphite foam,GF)、炭毡(Carbon felt,CF)和压缩膨胀石墨(Compressed expansed natural graphite,CENG)作为相变储能材料(Phase change material,PCM)石蜡的强化传热载体,制备了三种不同结构炭材料-石蜡相变储能材料体系.采用扫描电镜(SEM)、激光热导仪和差示扫描量热仪(DSC)对其结构和热性能进行了表征和测试.结果表明:浸蜡后的GF、CF和CENG的热导率分别比纯石蜡的热导率提高了437倍、14倍和25倍;比较三种储能材料体系的储能行为发现,三种储能材料体系的相变潜热分别为42.34 J/g, 48.38 J/g和57.82 J/g.
이석묵포말(Graphite foam,GF)、탄전(Carbon felt,CF)화압축팽창석묵(Compressed expansed natural graphite,CENG)작위상변저능재료(Phase change material,PCM)석사적강화전열재체,제비료삼충불동결구탄재료-석사상변저능재료체계.채용소묘전경(SEM)、격광열도의화차시소묘량열의(DSC)대기결구화열성능진행료표정화측시.결과표명:침사후적GF、CF화CENG적열도솔분별비순석사적열도솔제고료437배、14배화25배;비교삼충저능재료체계적저능행위발현,삼충저능재료체계적상변잠열분별위42.34 J/g, 48.38 J/g화57.82 J/g.
Graphite foam, carbon felt and compressed expanded natural graphite (CENG) were used to increase the heat transfer ability of paraffin wax as latent heat storage (LHS) medium. Structure and thermal properties of the paraffin wax-carbon LHS system were characterized using the scanning electron microscopy, laser flash technique and differential scanning calorimetry. Results indicated that the thermal conductivities of paraffin wax-graphite foam, paraffin wax-carbon felt and paraffin wax-CENG systems were enhanced by a factor of 437, 14 and 25 times, respectively, compared with pure paraffin wax and their latent heats were 42.34 J/g, 48.38 J/g and 57.82 J/g respectively.