填充相变材料金属多孔纤维毡中固液相变实验研究  

Experimental Study on the Solid-Liquid Phase Change in Metallic Fiber Felt Saturated With Phase Change Material

作　　者：李文强[1] 屈治国[1] 姚金海 

机构地区：[1]热流科学与工程教育部重点实验室,西安交通大学能动学院,陕西西安710049 [2]烟台茬原空调设备有限公司,山东烟台264000

出　　处：《工程热物理学报》2013年第5期923-926,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51176149)

摘　　要：本文利用有机相变材料石蜡高熔化潜热,结合金属多孔纤维毡高渗透率、高导热系数的优点,搭建金属纤维毡内固-液相变强化换热实验台。研究了填充石蜡对换热的强化效果以及纤维毡孔隙率和孔径对加热面温度以及相界面位置变化的影响。结果表明,在相同的热密度下,填充石蜡可以有效强化多孔纤维毡换热,显著降低加热面温度。表面温度随孔隙率和纤维直径增加而增加。Integrating high thermal conductivity and permeability of porous stainless-steel fiber felt and the high latent heat phase change materials （PCMs）, the enhanced heat transfer performance of porous stainless-steel fiber felt saturated with paraffin as phase change material （PCM） is experimen- tally studied. The effects of the porosity and the fiber diameter on the surface temperature and the solid/liquid interface evolutions are investigated. The inclusion of the PCM in the melting region can significantly reduce the surface temperature. The surface temperature is positively related with the porosity and the fiber diameter.

关 键 词：相变材料 不锈钢纤维毡 熔化 

分 类 号：TK124[动力工程及工程热物理—工程热物理]