本文介绍了热机的发展历史,主要介绍了从塞莱维蒸汽机到今天的大容量汽轮机的蒸汽动力技术历史。从热机热效率的发展规律出发,指出了热机未来的发展方向。蒸汽机和汽轮机是同一时期产生的,可是到了二十世纪初,蒸汽机却停止了发展,代之而得到迅速发展的是汽轮机和内燃机。汽轮机的单机容量在六十年代是快速上升时期,七十年代初处于稳定状态,热效率的提高也处于停滞状态。从汽轮机原理来看,如果再要提高压力,扩大单机容量的话,只要 This article presents the history of the development of heat engines, mainly introducing the history of steam power technology from the Celevière steam turbine to today’s high-capacity turbines. Starting from the development law of thermal efficiency of thermal engine, the development direction of thermal engine is pointed out. Steam engines and steam turbines were produced in the same period, but by the early twentieth century steam engines stopped their development and instead steam turbines and internal combustion engines were rapidly evolving. The unit capacity of steam turbines in the 1960s was a period of rapid increase. In the early 1970s, the unit capacity was in a steady state and the improvement of thermal efficiency was also at a standstill. From the steam turbine principle point of view, if you want to increase pressure, then expand the stand-alone capacity, as long as