HFC混合物表面张力的预估方程  

PREDICTION METHOD OF SURFACE TENSION FOR HFC MIXTURES

作　　者：林鸿[1] 段远源[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《工程热物理学报》2002年第2期150-152,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.59906006);高等学校全国优秀博士学位论文作者专项资金资助项目(No.200032)

摘　　要：表面张力是有沸腾和凝结换热计算必不可少的物性参数，目前国际上已商业化使用或提出的潜在的环保工质，大多数为氢氟烃（ＨＦＣ）混合物，尤其是Ｒ２２和Ｒ５０２的替代物、本文应用对比态原理和重正化群理论，提出了一种新的ＨＦＣ类物质混合物表面张力的预估方程，并与国际上现有的预估式进行了比较分析。新预估式可以在广阔的温度范围内较高精度地再现实验数据，计算精度可以满足工程应用的需要．Surface tension is a basic thermophysical property, especially with respect to heat transfer through a heat exchanging surface with bubbles of fluid drops on it. The long-term replacements for HCFC refrigerants (such as R22) and R502 are mostly hydrofluorocarbon (HFC) mixtures. Based on the corresponding-states treatment and the renormalization-group theory, a new prediction method of surface tension of HFC mixtures is developed and compared with literatures' methods. Present method can represent the experimental results accurately in a wide temperature range and which accuracy can meet the requirements of engineering applications.

关 键 词：氢氟烃 HFC 混合物 表面张力 预估方程 制冷剂 热物性参数 

分 类 号：TB612[一般工业技术—制冷工程] O647.1[理学—物理化学]