Abstract
The combined cycle power plant consists of a coal fired boiler with steam turbines, where the feedwater is preheated with the exhaust heat from the gas turbine. The idea behind this type of combined cycle power plant is to take the design from a normal coal fired steam power plant, redesign it by removing the steam extractions from the turbines and install a gas turbine with a heat recovery preheater for the feedwater preheating. Compared to the nominal steam power plant, with steam extraction feedwater preheating, the consequences are substantial for the steam cycle of the combined power plant. The coal fired boiler, steam turbines and the condenser receive an increased mass flow and these components have to be redesigned. The steam turbines deliver more power, which means that more electrical power is generated at the generator terminals. The study consists of a broad parametric study on the combined cycle power plant to find out the most suitable gas turbines for this purpose and performance. One important result is the marginal efficiency, which is defined to find out with what efficiency the gas is converted into electricity when the gas turbine is used in this type of combined cycle. The
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Citation Formats
Nilsson, Pontus.
The marginal efficiency of combined cycle gas turbines.
Sweden: N. p.,
1994.
Web.
Nilsson, Pontus.
The marginal efficiency of combined cycle gas turbines.
Sweden.
Nilsson, Pontus.
1994.
"The marginal efficiency of combined cycle gas turbines."
Sweden.
@misc{etde_10105749,
title = {The marginal efficiency of combined cycle gas turbines}
author = {Nilsson, Pontus}
abstractNote = {The combined cycle power plant consists of a coal fired boiler with steam turbines, where the feedwater is preheated with the exhaust heat from the gas turbine. The idea behind this type of combined cycle power plant is to take the design from a normal coal fired steam power plant, redesign it by removing the steam extractions from the turbines and install a gas turbine with a heat recovery preheater for the feedwater preheating. Compared to the nominal steam power plant, with steam extraction feedwater preheating, the consequences are substantial for the steam cycle of the combined power plant. The coal fired boiler, steam turbines and the condenser receive an increased mass flow and these components have to be redesigned. The steam turbines deliver more power, which means that more electrical power is generated at the generator terminals. The study consists of a broad parametric study on the combined cycle power plant to find out the most suitable gas turbines for this purpose and performance. One important result is the marginal efficiency, which is defined to find out with what efficiency the gas is converted into electricity when the gas turbine is used in this type of combined cycle. The definition itself is also discussed. 5 refs. 60 figs}
place = {Sweden}
year = {1994}
month = {Nov}
}
title = {The marginal efficiency of combined cycle gas turbines}
author = {Nilsson, Pontus}
abstractNote = {The combined cycle power plant consists of a coal fired boiler with steam turbines, where the feedwater is preheated with the exhaust heat from the gas turbine. The idea behind this type of combined cycle power plant is to take the design from a normal coal fired steam power plant, redesign it by removing the steam extractions from the turbines and install a gas turbine with a heat recovery preheater for the feedwater preheating. Compared to the nominal steam power plant, with steam extraction feedwater preheating, the consequences are substantial for the steam cycle of the combined power plant. The coal fired boiler, steam turbines and the condenser receive an increased mass flow and these components have to be redesigned. The steam turbines deliver more power, which means that more electrical power is generated at the generator terminals. The study consists of a broad parametric study on the combined cycle power plant to find out the most suitable gas turbines for this purpose and performance. One important result is the marginal efficiency, which is defined to find out with what efficiency the gas is converted into electricity when the gas turbine is used in this type of combined cycle. The definition itself is also discussed. 5 refs. 60 figs}
place = {Sweden}
year = {1994}
month = {Nov}
}