SET Proceedings 2978-4387 Caravel Press 10.65582/set.2005.080 2005.080 Experimental Study on The Thermal Performance of Paraffin and Their Mixtures YanQuanying Department of Urban Construction Engineering, Beijing Institute of Civil Engineering and Architecture, Beijing 100044, China 23092005 4 1 978-7-112-07718-2 354 356 23 September 2005 © 2005 Copyright WSSET 2005

In this paper, the thermal performances of several kinds of paraffin and their mixtures were studied experimentally by differential scanning calorimeter(DSC). Experimental samples included n-Heptadecane, n-Octadecane, n-Eicosane, 46# paraffin and 48# paraffin. The phase change temperatures of paraffin are from 20 to 50°C. The results show that the phase change temperature of paraffin can change with the composition. A wider range of phase change temperature can be achieved by changing the mixture proportion so as to satisfy different demands. Paraffin has larger phase change latent heat and no supercooling. The phase change temperatures of 46# paraffin or 48# paraffin with higher phase change temperature can evidently decrease when they were mixed with a little of n-Heptadecane or n-Octadecane with lower phase change temperature. The results in this paper can provide basis for the application of phase change material in the building field.

 Phase change temperature phase change latent heat paraffin thermal performance 23 to 25 September 2005 4th International Conference on Sustainable Energy Technologies SET2005 4 Jinan, China Zhang Yinping, Kang Yanbing, Jiang Yi. 1999. Applied research of thermal storage in phase change and chemical reaction in the building HVAC field. HV&AC. Vol 29. No5. pp34~37. China. Ival O Anil, K Sircar. 1993. Development of phase change technology for heating and cooling of residential buildings and other applications. Proceedings of the 28th intersociety energy conversion engineering conference. Atlanta: American Chemical Society. Vol 2. pp134-140. Xiao Min, Feng Bo, Gong Kecheng. 2002. Preparation and performance of shape- stabilized phase change thermal storage materials with high thermal conductivity. Energy Conversion & Management. Vol 43. No1. pp103. Xiao Min, Feng Bo, Gong Kecheng. 2001. Thermal performance of a high conductive shape-stabilized thermal storage material. Solar Energy Materials & Solar Cells. Vol 69. No3. pp293. Ye Hong, Ge Xinshi. 2000. Preparation of polyethylene-paraffin compound as a form-stable solid-liquid phase change material. Solar Energy Materials and Solar Cells. Vol 64. No1. pp37～44. Qin Penghua, Yang Rui，Zhang Yinping. 2003. Thermal performance of shape-stabilized phase-change materials. J Tsinghua Univ. Vol43. No6. pp833-835. China. Ye Hong，Ge Xinshi. 2000. The structural and chemical analyses of a kind of shape-stabilized paraffin. ACTA Energiae Solaris Sinica. Vol 21. No4. pp417～421.