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There are two types of air preheaters for use in steam generators in thermal power stations: One is a tubular type built into the boiler flue gas ducting, and the other is a regenerative air preheater. [1] [2] [7] These may be arranged so the gas flows horizontally or vertically across the axis of rotation.
A heat recovery steam generator (HRSG) is an energy recovery heat exchanger that recovers heat from a hot gas stream, such as a combustion turbine or other waste gas stream. It produces steam that can be used in a process ( cogeneration ) or used to drive a steam turbine ( combined cycle ).
Ljungström air preheater in cross section. Ljungström air preheater is an air preheater invented by the Swedish engineer Fredrik Ljungström (1875–1964). Ljungström logo. The patent was achieved in 1930. [1] The factory and workshop were in Lidingö throughout the 1920s, with about 70 employees. In the 1930s, the facilities were used as a ...
Ljungström steam turbine locomotive with air preheater (circa 1925) (Swedish National Museum of Science and Technology Main article: Ljungström air preheater Fredrik Lindström also invented an efficient air preheater , which even in a modern utility boiler provides up to 20 percent of the total heat transfer in the boiler process, but only ...
The turbine exhaust is already hot, so a regenerative air preheater is not required as in a conventional steam plant. However, a fresh air fan blowing directly into the duct permits a duct-burning steam plant to operate even when the gas turbine cannot. Without supplementary firing, the thermal efficiency of a combined cycle power plant is ...
The plant exported power for sale to Houston Power and Light and steam to a nearby process plant owned by Celanese Chemical (the "steam host"). Thanks to excellent field sales relationship with Zachry and CSW, this plant was essentially an all-Westinghouse plant, including the 150 MW-class steam turbine generator and all power electrics.
A Rankine cycle with two steam turbines and a single open feedwater heater. A feedwater heater is a power plant component used to pre-heat water delivered to a steam generating boiler. [1] [2] [3] Preheating the feedwater reduces the irreversibilities involved in steam generation and therefore improves the thermodynamic efficiency of the system ...
Steam generator (auxiliary boiler), a steam-powered boiler used on ships to produce a low-pressure steam, heated by a high-pressure steam supply rather than a flame. Steam generator (boiler), an oil- or gas-fired boiler, based on a low-water content monotube coil. Steam generator (nuclear power), a heat exchanger in a pressurized water nuclear ...