多元非共沸混合物池内核态沸腾传热实验研究  

EXPERIMENTAL STUDY ON NUCLEATE POOL BOILING HEAT TRANSFER OF NON-AZEOTROPIC MULTICOMPONENT MIXTURES

作　　者：李志坚[1] 孙兆虎[1] 公茂琼[1] 吴剑峰[1] 

机构地区：[1]中国科学院理化技术研究所

出　　处：《真空与低温》2005年第2期90-97,共8页Vacuum and Cryogenics

基　　金：国家自然科学基金资助项目(资助号:50206024)

摘　　要：对3种二元混合物和1种三元混合物进行了池内核态沸腾传热的实验研究,从系统压力、热流密度以及混合物组成3个方面进行了分析,指出了在三元混合物中高沸点工质对传热系数曲线变化的趋势具有重要影响。将实验结果同现有经验关联式的计算结果相比较,指出了现有关联式在计算不同混合物时出现的问题。Heat transfer coefficients in nucle ate pool boiling on a smooth flat surface were measured for three kinds of binary mixtures and one kind of ternary mixtures under the saturated conditions at the steady pressure for a wi de range of heat fluxes and mixture concentrations.Refrigerants R134a,R290and R600a were used to make up binary and ternary mixtures.Five correlations were compared aga inst the present experimental date.Fujita and Tsutsui ' s correlation(1994)has a better agreement with the date than the others.

关 键 词：混合物 池沸腾 非共沸 实验研究 

分 类 号：O514[理学—低温物理] TB611[理学—物理]