热工理论包括工程热力学、工程流体力学、工程传热传质学、燃烧学等。这些学科各有其特殊性,对它们分科研讨的必要性是显然的。然而它们有着共同的基础,如能对其共性方面作统一化处理,必能使人从更高的角度观察个别的热工现象,方便其工程实用。 热力学是研究能的本性的科学,是贯穿于热工理论的各个分支的。然而经典热力学不论在理论处理方面还是在实用方面都存在着需要加以“现代化”的问题。现代热力学应 Thermal theory includes engineering thermodynamics, engineering fluid mechanics, engineering heat and mass transfer, combustion and so on. Each of these disciplines has its own particularity, and the necessity of discussing them in different disciplines is obvious. However, they share a common basis. If they can make commonalizations about them common, they will enable them to observe individual thermal phenomena from a higher perspective and facilitate their practical engineering. Thermodynamics is the science of studying the nature of energy, and it runs through all branches of the theory of thermodynamics. However, classical thermodynamics has problems that need to be “modernized” in both theoretical and practical aspects. Modern thermodynamics should be