TY - GEN
T1 - Analysis of isothermal gas turbine coupled with the steam cycle
AU - Schaffel, N.
AU - Szlęk, A.
PY - 2008
Y1 - 2008
N2 - In this work, simple thermodynamic analysis of three different approaches (called concept A, B and C) of the proposed isothermal gas turbine cycle has been carried out. In the concept A, air at the ambient conditions is supplied to the compressor, where is compressed and than is delivered to the regenerative heat exchanger. In this exchanger air is heated up above the ignition temperature of fuel. Compressed and hot air is supplied to the turbine, where it expands. Fuel through the channels drilled in the rotating blades of turbine is delivered into the turbine, where it mixes with hot air and combusts. Decompressed, but hot combustion gases are supplied to the heat exchanger where are cooled by compressed air. In the concept B process of air preheat is partially done by combustion of fuel. This modification is done to lower the maximal working temperature of the heat exchanger. In the concept C, the boiler is introduced in order to produce steam used for flue gas dilution before supplying to the turbine. In further part of the work, coupling of isothermal gas turbine cycle with the steam cycle has been considered. All considered concepts provide the significant increase in efficiency, comparing with existing cycles.
AB - In this work, simple thermodynamic analysis of three different approaches (called concept A, B and C) of the proposed isothermal gas turbine cycle has been carried out. In the concept A, air at the ambient conditions is supplied to the compressor, where is compressed and than is delivered to the regenerative heat exchanger. In this exchanger air is heated up above the ignition temperature of fuel. Compressed and hot air is supplied to the turbine, where it expands. Fuel through the channels drilled in the rotating blades of turbine is delivered into the turbine, where it mixes with hot air and combusts. Decompressed, but hot combustion gases are supplied to the heat exchanger where are cooled by compressed air. In the concept B process of air preheat is partially done by combustion of fuel. This modification is done to lower the maximal working temperature of the heat exchanger. In the concept C, the boiler is introduced in order to produce steam used for flue gas dilution before supplying to the turbine. In further part of the work, coupling of isothermal gas turbine cycle with the steam cycle has been considered. All considered concepts provide the significant increase in efficiency, comparing with existing cycles.
KW - Gas turbine
KW - Isothermal expansion
KW - Thermodynamic cycle
UR - https://www.scopus.com/pages/publications/84924322723
M3 - Conference contribution
AN - SCOPUS:84924322723
T3 - ECOS 2008 - Proceedings of the 21st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
SP - 631
EP - 638
BT - ECOS 2008 - Proceedings of the 21st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
A2 - Kolenda, Zygmunt
A2 - Ziebik, Andrzej
A2 - Stanek, Wojciech
PB - Silesian University of Technology
T2 - 21st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2008
Y2 - 24 June 2008 through 27 June 2008
ER -