Small steam turbine generator sets operate by utilizing the pressure and temperature differences between the inlet and outlet steam. After the steam has done work in the turbine, its quality changes. With the exception of a small amount of steam leakage, the inlet and outlet steam flow rates are essentially equal. So, what is the market outlook for small steam turbines?

　　What is the market outlook for small steam turbines?

　　 Small steam turbine Primarily used in industrial settings, especially by small companies such as chemical plants, paper mills, and sugar refineries.

　　Therefore, small steam turbines certainly have less promising prospects for power generation compared to high-power steam turbines. The advent of steam turbines has greatly boosted the development of the electric power industry. By the early 20th century, the unit power of power plant steam turbines had already reached 10 MW. As the applications of electricity continued to expand, in the 1920s, peak loads at power stations in major cities such as New York in the United States approached 1,000 MW. If each generating unit had a capacity of only 10 MW, nearly 100 units would have been required. Thus, in the 1920s, the capacity of individual units was increased to 60 MW, and by the early 1930s, steam turbines with capacities of 165 MW and 208 MW had begun to appear.

　　Thereafter, the economic downturn and the outbreak of World War II brought the increase in single-turbine capacity to a standstill. In the 1950s, with the postwar economic recovery and a sharp surge in electricity demand, the power output of individual turbines began to rise steadily, and large-scale steam turbines with capacities ranging from 325 to 600 MW相继 appeared. In the 1960s, turbines with a capacity of 1,000 MW were manufactured; by the 1970s, turbines with a capacity of 1,300 megawatts had been built. In many countries, the capacity of a single unit typically ranged from 300 to 600 MW.

　　 Small steam turbine It is widely used in various sectors of the social and economic spheres. There are many types of steam turbines, and different methods are used for classifying them. As steam flows through a steam turbine—from the inlet to the outlet—it expands, causing the specific volume of the steam to increase hundreds or even thousands of times. Consequently, the blade heights at each stage must be progressively lengthened. In high-power condensing steam turbines, the exhaust area is very large, so the blades at the last stage must be made exceptionally long.

　　The research and development of large-scale steam turbine units represent an important direction for the future development of steam turbines, among which the development of longer last-stage blades is crucial for further advancing large-scale steam turbines. Enhancing thermal efficiency is another key area of steam turbine development. Adopting higher steam parameters and secondary reheat, as well as deploying peak-shaving units and promoting the application of heat-supply steam turbines, are significant trends in this regard.

　　In 1983, the installed capacity of geothermal steam turbines worldwide was 3,190 MW. However, the utilization of deeper geothermal resources—such as magma—with higher temperatures still remains to be explored. Steam turbine power plants utilizing solar energy have already been built, and ocean thermal energy conversion is also under active research. All these new-energy steam turbines require ongoing experimentation and research.

　　A power plant equipped with a steam turbine generator boasting a total capacity of 1,000 MW consumes approximately 2.3 million tons of standard coal annually. If the thermal efficiency could be improved by even just 1%, it would save 60,000 tons of standard coal each year. Consequently, the thermal efficiency of steam turbine units has always been given great attention. To further enhance... Small steam turbine To improve thermal efficiency, in addition to continuously enhancing the efficiency of the steam turbine itself—such as by refining blade profile designs at various stages (to reduce flow losses) and minimizing losses in valves and inlet/outlet piping—we can also adopt measures from a thermodynamic perspective.