汽轮机1（Turbine 1）.doc

汽轮机1（Turbine 1） As a prime mover of the steam turbine, it is from the 1890 Swedish Engineer La Farge created the first power turbine is only 5 horsepower, has been 100 years of history, Chinas first steam turbine steam turbine was made in 1949 in Shanghai, a capacity of 6000 kilowatts, in 1956 in Huainan power plant put into operation. The reason for the rapid development of the steam turbine foundry industry is that: The heat efficiency is high, the comprehensive heat efficiency of condensing steam turbine unit is 40%, and the heat efficiency of heat supply unit reaches 80%. A steam turbine is a continuous working gyro, which has a greater power. The unit runs smoothly and the accident rate is low. It can generally maintain the overhaul in 3 years or so, and fully improve the utilization ratio of equipment. Because steam turbines have these advantages, they are widely used to drive generators, blowers, pumps, and power machines for ships. Name and symbol 1. Temperature: the degree of heat and cold on the surface of objects 2. Pressure: the vertical force exerted on the unit area of an object 3. Absolute pressure: the true pressure of the gas in the vessel. Express absolutely with P 4. Table pressure: pressure measured by a manometer. Using the P table representation 5. Vacuum value: the value measured by the vacuum meter. Expressed in H P = P table +B atmospheric pressure P absolutely =B - H 6. Volume: the volume occupied by a unit mass. Symbol: V units: cubic meters per kilogram 7 density: the quality of working substance per unit volume. Symbol: P in kilograms per cubic metre 8: energy containing kinetic energy; the energy of an object due to motion Potential energy: the energy of an object due to a certain temperature Heat: the energy of molecules in an object due to thermal motion Internal energy: the energy stored and stored in an object. Internal kinetic energy, internal potential energy 9, work: any force applied to the object, and make the object displaceme