Experimental Investigation of the Operating Characteristics of a Pulsating Heat Pipe with Ultra-Pure Water and Micro Encapsulated Phase Change Material Suspension

作     者：SHI Weixiu SU Xiaoyang CHEN Hongdi PAN Lisheng SHI Weixiu;SU Xiaoyang;CHEN Hongdi;PAN Lisheng

作者机构：Beijing Engineering Research Center of Sustainable Energy and BuildingsBeijing University of Civil Engineering and ArchitectureBeijing100044China School of Environment and Energy EngineeringBeijing University of Civil Engineering and ArchitectureBeijing100044China State Key Laboratory of High Temperature Gas DynamicsInstitute of MechanicsChinese Academy of SciencesBeijing100190China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2024年第33卷第2期

页      面：457-468页

核心收录：

学科分类：080702[工学-热能工程] 08[工学] 0807[工学-动力工程及工程热物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：financially supported by National Natural Science Foundation of China (Grant No.52000008) supported by R&D Program of Beijing Municipal Education Commission(Grant No.KM202310016008) Beijing Natural Science Foundation (Grant No.3192042) the Fundamental Research Funds for Beijing University of Civil Engineering and Architecture (Grant No.X20058) 

主　　题：pulsating heat pipe(PHP) micro encapsulated phase change material(MEPCM) heat transfer characteristic inclination angle 

摘      要：The specific heat capacity of working fluid is an important influence factor on heat transfer characteristic of the pulsating heat pipe(PHP).Due to the relatively large specific heat capacity of micro encapsulated phase change material(MEPCM) suspension,a heat transfer performance experimental facility of the PHP was *** heat transfer characteristic with MEPCM suspension of different mass concentrations(0.5% and 1.0%) and ultra-pure water were compared *** was found that when the PHP uses MEPCM suspension as its working fluid,operating stability is impoverished under lower heating power and the operating stability is better under higher heating *** the inclination angle of 90°,the temperature at heating side decreases compared to ultra-pure water and the temperature at heating side decreases with the raising of MEPCM suspension mass *** heat transfer characteristic of the PHP is positively correlated with the inclination angle and the 90° is *** unfavorable effect of the inclination angle decreases with heating power *** the inclination angle is 90°,the PHP with MEPCM suspension at 1.0% of mass concentration has the lowest thermal transfer resistance and followed by ultra-pure water and MEPCM suspension at 0.5% of mass concentration has the highest thermal transfer *** the inclination angles are 60° and30°,the effect of gravity on the flow direction is reduced to 86.6% and 50% of that on the inclination angle of 90°,respectively,and the promoting effect of gravity on the working fluid is further weakened as the inclination angle further *** to the high viscosity of MEPCM suspension,the PHP with ultra-pure water has the lowest heat transfer *** the inclination angles is 60°,the thermal resistance with MEPCM suspension at0.5% of the mass concentration is lower than that at 1.0% at the heating power below 230 *** thermal resistance of MEPCM suspension tends to be simila