Calculation of the Properties of Moist Air The most exact calculation of the thermodynamic properties of moist air is based on the formulations developed by Hyland and Wexler of the U.S. National Bureau of Standards. The psychrometric chart and tables of ASHRAE are constructed and calculated from these formulations. Calculations based on the ideal gas equations are the
I was delighted to respond to an invitation from Ventus Publishing to write a book on
atmospheric pollution. It is a topic well enough served by books in the past, but has become
increasingly important during these early years of the 21st Century. I believe therefore that there
is a place for a review like this one and that notwithstanding the immense activity in the area the
book will have a reasonable shelf life. This is because it continually relates the discussion to the
principles of physics and chemistry, and these do not change....
Chapter 3 - Properties of pure substances. We start this chapter with the introduction of the concept of a pure substance and a discussion of the physics of phase-change processes. We then illustrate the various property diagrams and P-v-T surfaces of pure substances. After demonstrating the use of the property tables, the hypothetical substance ideal gas and the ideal-gas equation of state are discussed.
Chapter 3 - Properties of pure substances. The objectives of Chapter 3 are to: Introduce the concept of a pure substance, discuss the physics of phase-change processes. Illustrate the P-v, T-v, and P-T property diagrams and P-v-T surfaces of pure substances, demonstrate the procedures for determining thermodynamic properties of pure substances from tables of property data, describe the hypothetical substance “ideal gas” and the ideal-gas equation of state,...