Details
| Originalsprache | Englisch |
|---|---|
| Titel des Sammelwerks | 12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2017 |
| Seitenumfang | 13 |
| Publikationsstatus | Veröffentlicht - 2017 |
| Veranstaltung | 12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2017 - Stockholm, Schweden Dauer: 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.
ASJC Scopus Sachgebiete
- Ingenieurwesen (insg.)
- Werkstoffmechanik
- Ingenieurwesen (insg.)
- Maschinenbau
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
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12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2017. 2017.
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › 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 -