Details
Original language | English |
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Title of host publication | 12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2017 |
Number of pages | 13 |
Publication status | Published - 2017 |
Event | 12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2017 - Stockholm, Sweden Duration: 3 Apr 2017 → 7 Apr 2017 |
Abstract
The stator blades of a three-stage axial compressor were equipped with internal cooling channels to investigate the effects of internal blade cooling on axial compressor performance and gas-turbine efficiency. For water-cooled stator blades under realistic boundary conditions, the results from numerical simulations predict an isentropic total-to-total stage efficiency increase by 1.26 percentage points with no effect on the stage pressure ratio. In terms of overall efficiency, a multi-stage axial compressor profits from internal stator-blade cooling by a 1.45% increase. Increasing the heat exchanging surface through a higher stator solidity, this cooling benefit surpasses higher blade losses, and can be further maximized for high solidity stators. Gas-turbine efficiency, with or without recuperation is predicted to be directly proportional to the improvements in compressor efficiency.
Keywords
- Coolant, Efficiency, Heat, Stage, Stator
ASJC Scopus subject areas
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Physics and Astronomy(all)
- Condensed Matter Physics
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12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2017. 2017.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - A numerical concept study on internal blade cooling in axial compressors
AU - Willeke, T.
AU - Hellberg, M.
AU - Seume, J. R.
PY - 2017
Y1 - 2017
N2 - The stator blades of a three-stage axial compressor were equipped with internal cooling channels to investigate the effects of internal blade cooling on axial compressor performance and gas-turbine efficiency. For water-cooled stator blades under realistic boundary conditions, the results from numerical simulations predict an isentropic total-to-total stage efficiency increase by 1.26 percentage points with no effect on the stage pressure ratio. In terms of overall efficiency, a multi-stage axial compressor profits from internal stator-blade cooling by a 1.45% increase. Increasing the heat exchanging surface through a higher stator solidity, this cooling benefit surpasses higher blade losses, and can be further maximized for high solidity stators. Gas-turbine efficiency, with or without recuperation is predicted to be directly proportional to the improvements in compressor efficiency.
AB - The stator blades of a three-stage axial compressor were equipped with internal cooling channels to investigate the effects of internal blade cooling on axial compressor performance and gas-turbine efficiency. For water-cooled stator blades under realistic boundary conditions, the results from numerical simulations predict an isentropic total-to-total stage efficiency increase by 1.26 percentage points with no effect on the stage pressure ratio. In terms of overall efficiency, a multi-stage axial compressor profits from internal stator-blade cooling by a 1.45% increase. Increasing the heat exchanging surface through a higher stator solidity, this cooling benefit surpasses higher blade losses, and can be further maximized for high solidity stators. Gas-turbine efficiency, with or without recuperation is predicted to be directly proportional to the improvements in compressor efficiency.
KW - Coolant
KW - Efficiency
KW - Heat
KW - Stage
KW - Stator
UR - http://www.scopus.com/inward/record.url?scp=85086690296&partnerID=8YFLogxK
U2 - 10.29008/etc2017-106
DO - 10.29008/etc2017-106
M3 - Conference contribution
BT - 12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2017
T2 - 12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2017
Y2 - 3 April 2017 through 7 April 2017
ER -