Part 2
Thermodynamics
17.1
Introduction
Thermodynamics is an aspect of physics which deals with the energy
characteristics of materials and with the behavior of systems under-
going changes in system energy levels. The field of thermodynamics
is quite broad as well as deep, and can vary in presentation and in
application from relatively simple to very complex. For the purposes
of this book, a relatively simple presentation is adequate. The concepts
of thermodynamics presented here are common to virtually all text-
books and reference books. For those who want greater detail, Chap.
1 of the ASHRAE Handbook
Fundamentals
is one presentation writ-
ten at a college upper-division or graduate-student level.
1,2
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