By Tadashi Tanuma
Advances in Steam generators for contemporary energy Plants presents an authoritative evaluation of steam turbine layout optimization, research and size, the improvement of steam turbine blades, and different serious elements, together with turbine retrofitting and steam generators for renewable energy plants.
As a really huge percentage of the world’s electrical energy is at present generated in structures pushed by way of steam generators, (and will probably stay the case sooner or later) with steam generators working in fossil-fuel, cogeneration, mixed cycle, built-in gasification mixed cycle, geothermal, sun thermal, and nuclear vegetation internationally, this publication presents a entire overview of the examine and paintings that has been accomplished during the last decades.
- Presents an in-depth overview on steam turbine layout optimization, research, and measurement
- Written by way of various specialists within the area
- Provides an summary of turbine retrofitting and complicated functions in strength generation
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Additional info for Advances in steam turbines for modern power plants
13 Heat drop of back pressure turbine. condensing turbine consists of many turbine stages and large steam flow in the LP turbine, as a result, the LP turbine will become larger. In addition, the condensing turbine requires a larger condenser, causing more construction and maintenance costs. Therefore, this type of the turbine should be selected from an economical viewpoint. 2 Back pressure turbine The back pressure turbine is used for supplying process steam to the facilities in private-use power producers.
2, the same as USC units of the double-reheat type. Coal, or other fossil fuels, is combusted in the furnace of the boiler, and steam is generated by the combusted heat. The steam is superheated through four superheaters consisting of a small-diameter piping group, and the steam temperature is increased to 700 C. Then, the steam moves through the main steam pipes of large diameter, and main steam valves, and leads towards a very-high-pressure (VHP) turbine which is the first section of the steam turbine.
In this type of combined cycle, thermal efficiency of combined cycle is calculated by the following formula. Heat and energy flow is depicted in Fig. 23 for combined cycle plant and USC steam power plant. 23 Heat and energy flow of a combined cycle plant and a steam power plant. (A) 1500 C combined cycle plant and (B) USC steam power plant. 15) where ηt is the thermal efficiency of the combined cycle, ηc is the thermal efficiency of gas turbine cycle, and ηs is the thermal efficiency of steam turbine cycle.