ESDU 93014-1993
管内冷凝直管中压降的计算机程序（水平和垂直向下流动）

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适用范围: ESDU 93014 introduces a Fortran program that implements the calculation procedures of ESDU 90024 and ESDU 91023 respectively for vertical and horizontal cases. Those documents should be consulted for details of the empirical correlation used. Since vapour density is an important variable in the calculation and is usually available as a function of saturation temperature@ the relationship between pressure and saturation temperature is required at points along the tube@ although a constant value of vapour density may be used if the user wishes. The program provides options to use an Antoine or Wagner equation@ or to provide a set of values of saturation pressure and temperature; for the vapour density the options are to use the ideal gas law@ to provide a set of values of saturation temperature and density or to use a specific correlation equation (log density as a fraction of critical as a five term polynomial function of reciprocal reduced temperature minus one). For a wide range of pure compounds the ESDU Physical Data@ Chemical Engineering Series provides values of the constants in the correlation equations for saturation temperature and vapour density. The program (ESDUpac A9314) is provided on disc (uncompiled) in the software volume@ and also compiled within ESDUview@ a user-friendly shell running under MS DOS that prompts on screen for the input data. A worked example illustrates the use of the program and the formats of the input data and the output.

ESDU 93014-1993管内冷凝 直管中压降的计算机程序（水平和垂直向下流动）