【摘要】 本文叙述了编制氟利昂热力性质通用计算程序的起因,状态方程的选定,编制过程中所遇到的一些问题,改正并完善了唐宁(R.C.Downing)文中计算公式与系数值的某些问题。所编程序执行结果证明,该程序可用来计算R11、R12、R13、R14、R21、R22、R23、R113、R114、R500、R502、RC318等十二种氟利昂热力性质的饱和表与过热表。数据可根据需要用工程制或SI制输出。这些数据与ASHRAE等发表的资料非常吻合,完全能满足工程计算的需要。更多还原

【Abstract】 This paper reviews the significance of deriving a general computer program of the thermodyrnamic properties for fluorinated hydrocarbons and gives a brief description of the selectior of the equations of state and some problems met in grogramming. The authors correct and improve the calculating relationships and numerical constants published in R. C. Downing’s article [1].Practical application of this general program confirms that the program can be used to calculate the thermodynamic properties of twelve refrigerants. R11, R12, R13, R14, R21, R22, R23, R113, R114, R500, R502 and RC318 in saturated and superheated states with data output in either metric or SI units according to the requirements of users. The results obtained correspond satisfactorily with the data published by ASHRAE and others, and Consequently, meet each. particular requirement for engineering calculation.The calculated properties include saturated vapour pressure, liquid density, specific volume of vapour, euthalpy and entropy of liquid and vapour etc.更多还原