本課程是熱力學（一）、（二）的擴展與延伸，課程內容以工程實用理論為主並拓展基本理論，探討可用能分析、熱力關係式、熱力學第三定律、化學平衡、不可逆熱力學以及有限時間熱力學。
This course is the expansion and extension of thermodynamic（I）、（II）. The course contents
to practical engineering theory and develops the basic theory. It explores the
available energy analysis, the thermodynamic relationship, the third law of
thermodynamics, chemical equilibrium and irreversible thermodynamics, and
finite-time thermodynamics.