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US 2014/0208758 A1Published application
Gas turbine with extended turbine blade stream adhesion
AssigneeClearsign Combustion Corporation
InventorsROBERT E. BREIDENTHAL, JOSEPH COLANNINO, CHRISTOPHER A. WIKLOF
Life of this patent
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Abstract
A gas turbine may include turbine blades configured to improve stream adhesion by selectively attracting or reducing repulsion of charged particles carried by a combustion gas stream.
Claims80
A gas turbine, comprising:
- a combustor configured to output a combustion gas stream at least intermittently or periodically including charged particles having a first sign;
- and
- a turbine configured to receive the combustion gas stream and including at least one turbine stage having turbine blades, each turbine blade of the at least one stage including:
- a repelling surface configured to be at least intermittently or periodically held or driven to a repelling voltage having a polarity the same as the charged particles having the first sign,
- an adhesion surface configured to be at least intermittently or periodically held, driven, or in equilibrium to an adhesion voltage or charge having lower magnitude than or opposite polarity from the repelling voltage, and
- an air channel configured to deliver film-cooling air adjacent to the repelling surface.
3 more elements
(canceled)
A method of operating a gas turbine, comprising:
- providing a combustion gas stream at least intermittently or periodically carrying charged particles having a first sign;
- converting thermodynamic energy to rotational energy with turbine blades;
- at least intermittently or periodically applying Coulombic repulsion to the charged particles from a repelling portion of each turbine blade by applying a repelling voltage to the repelling portion;
- and
- at least intermittently or periodically applying reduced Coulombic repulsion from or increased Coulombic attraction to an adhesion portion of each turbine blade surface by at least one of shielding the Coulombic repulsion caused by the repelling voltage or by applying an adhesion voltage to the adhesion portion of the turbine blade surface.
2 more elements
A turbine blade, comprising:
- a repelling surface configured to be at least intermittently or periodically held or driven to a repelling voltage;
- and
- an adhesion surface configured to be at least intermittently or periodically held, driven, or in equilibrium to an adhesion voltage or charge having lower magnitude than or opposite polarity from the repelling voltage.
Dependencies are inferred from the claim text.