Abstract
Repowering of existing coal-fired power plants is often
accomplished by adding gas turbines. In this paper we assume that
the gas turbine exhaust is used for feed water preheating.Typical
gas turbine exhaust temperatures are in the range 450-600C whereas
typical boiler inlet temperatures are 250-300C. The big difference
in temperature between exhaust and water prevents an efficient
exchange of heat. One way to lower the exhaust temperature is to
expand the gas to sub atmospheric pressure. The result is a 50%
increase in possible installed gas turbine power.
Original language | English |
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Title of host publication | Efficiency, Cost, Optimization, Simulation and Environmental aspects of Energy Systems and Processes |
Place of Publication | Nancy, France |
Publication date | 1998 |
Pages | 583-590 |
Publication status | Published - 1998 |
Event | ECOS '98 - Nancy, France Duration: 1 Jan 1998 → … |
Conference
Conference | ECOS '98 |
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City | Nancy, France |
Period | 01/01/1998 → … |