工程热力学是研究热能和其他能量之间相互转换规律的一门学科,主要介绍热能和机械能转换所必须遵循的基本规律——热力学第一定律和热力学第二定律，以及工质的热力性质、热力过程和热力循环的工作原理。 通过工程热力学的学习，使学生了解热力学的宏观研究方法，掌握工程热力学的基本概念和基本定律，能够正确运用能量转换规律和有效利用能量的基本知识分析和解决热力过程，建立合理、有效利用能源的概念，为实际工作中的有关热能利用打下坚实的理论基础。 Engineering Thermodynamics is a subject to study the laws of the conversion between heat energy and other energies. It mainly introduces the First and second Law of Thermodynamics which are obeyed in the process of the conversion between heat energy and mechanical energy, thermodynamic properties of working mediums, thermodynamic processes and working principles of thermodynamic cycles. After studying Engineering Thermodynamics, student can know macroscopic research methods for thermodynamics, grasp the basic conception and laws of thermodynamics, analyze and settle thermodynamic processes using energy conversion laws and basic knowledge of efficient used energy, and establish the concepts to utilize energy rationally and efficiently. These will be solid theoretical foundation in the future work on the heat energy utilization for the students.