Thermal Properties of Heat Storage Composites Containing Multi-walled Carbon Nanotubes1

摘要：

To overcome the low thermal conductivity problem of palmitic acid (PA), multi-walled carbon nanotubes (MWNT) were dispersed into melting PA for their high thermal conductivities and low weight. The PA/MWNT composites are proved to be very stable. As expected, the differential scanning calorimetry (DSC) shows the melting point of composites fall in some scale, compared with pure PA. Although the latent heat of melting of composites is lower than pure PA, the latent heat capacity of the composites was large and the latent heat of form-stable composite PCM with MWNT in mass ratios of 5% had satisfying latent heat capacity for LHTES applications. Different from other work, this paper report thermal conductivity of the pure PA and the composites at different temperature. The most important thermal conductivity of PCM is the thermal conductivity at melting point and at temperature near the melting point. The composite with 5wt% MWNT can increase the thermal conductivity to 0.45W/mK near the melting point. Compared with pure PA, of the 5 wt % PA/MWNT composite increases the mean thermal conductivity by 36% in solid and 56% in liquid, respectively.

关键词： thermal properties palmitic acid multi-walled carbon nanotube latent heat thermal energy storage

作者: Ji-Fen Wang Hua-Qin Xie Zhong Xin

作者单位: School of Urban Development and Environental Engineering, Shanghai Second Polytechnic University, Sh School of Urban Development and Environental Engineering, Shanghai Second Polytechnic University, Sh State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shang

会议类型: 国际会议

会议名称: The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)

会议地点: 大连

会议语种:英文

在线出版日期: 2008-08-04（万方平台首次上网日期，不代表论文的发表时间）