太阳能蓄热石蜡类相变材料循环稳定性

Thermal Cycling Stability of Paraffin Wax as Phase Change Materials for Solar Energy Storage

研究了石蜡54号-56号、56号-58号、58号-60号相变材料的热稳定性，其相变温度在50—60℃之间．利用差示扫描量热（DSC）技术测定了经过1次、100次、200次、300次反复热循环的相变材料的相变温度和相变潜热，实验结果表明：随着热循环次数的增加，相变材料的相变温度和相变潜热的变化很小．

Thermal stability of phase change materials, paraffin wax including paraffin wax 54# - 56#,paraffin wax 56#-58#, and paraffin wax 58# -60#, with melting temperature between 50 ℃ -60 ℃ is studied. The melting temperature and latent heat of paraffin wax were determined by using DSC technique after 1,100,200 and 300 times thermal cycles. The accelerated thermal cycle tests indicate that the melting temperature and latent heat of the paraffin wax change slightly