Question about physical properties
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When performing heat exchange calculations, material properties are a fundamental aspect. Some manuals provide only the density, specific heat, and viscosity of gases under fixed conditions, such as standard conditions. But what if my operating conditions (pressure, temperature) change? How should I determine the material properties in such cases? Also, can the material properties of mixtures be simply obtained by multiplying the corresponding values based on their molar ratios? ?
This post was last edited by Suspected law-abiding citizen on 2022-11-10 at 16:37. It is recommended to find some property reference books, such as the \"Handbook of Property Data for Chemicals and Chemical Engineering\" and the \"Practical Handbook of Thermodynamic Data for Inorganic Substances.\" Additionally, in mixtures, not all properties can be simply added together using molar ratios; for example, specific heat capacity can be calculated this way, but dew point and boiling point cannot. The calculation method is very complex; I have only seen the calculation method for gas mixtures on page P514 in the \"Textbook for the National Professional Qualification Examination for Registered Public Equipment Engineers in the Field of Power Engineering\".