United Technologies Corporation

Utc Fuel Cells, LLC

Leonard A Bach

Russell J Bergman

Brandon W Spangler

Albert P Grasso

Evan Christopher Rege

Chris Vargas

Joseph W Bridges, Jr

James P Chrisikos

Jeffrey G Lake

William T Unkert

Lawrence J Willey

Richard J Assarabowski

Stephen P Victor

Stephen J Yea

Pedro Inigo

Benoit Charles Olsommer

Jeffrey A Lake

A turbine vane for a gas turbine engine has an inner platform, an outer platform, at least one airfoil extending between the inner and outer platforms, and a tab radially extending inward from a front side of the inner platform. The tab contains a mounting aperture and an identification aperture that identifies an engine in which the turbine vane may be installed.

Turbine vane with mistake reduction feature

A turbine vane for a gas turbine engine includes inner and outer platforms joined by a radially extending airfoil. The airfoil includes leading and trailing edges joined by spaced apart pressure and suction sides to provide an exterior airfoil surface. The airfoil includes an airfoil cooling passage. A platform cooling passage is arranged within at least one of the inner and outer platforms. The platform cooling passage includes multiple cooling regions with one of the cooling regions arranged beneath the airfoil cooling passage.

Gas turbine engine turbine vane platform core

A sealing system for sealing a gap between a first body and a second body includes a first seal having a first portion adapted to be attached to the first body and a second portion extending into the gap. The sealing system also includes a second seal. The second seal has a first portion adapted to be attached to the second body and a second portion extending across the gap. The second portion of the first seal and the second portion of the second seal are adjacent and overlapping with each other to seal the gap.

Turbine sealing system

A nozzle segment for a gas turbine engine includes a flange which extends from a vane platform, the flange includes a hollow cavity.

Nozzle segment with reduced weight flange

A fuel cell stack () includes an integrated end plate assembly having a current collector () secured adjacent and end cell () of the stack, a pressure plate () secured adjacent the current collector (), and a backbone () secured within a backbone-support plane () defined within the plate (). Tie rod ends () of the backbone () extend over a gap () defined between the backbone-support plane () and a deflection plane () defined within the pressure plate () so that the tie rod ends deflect within the gap () upon tightening of tie rods (). Deflection of the backbone enables the backbone () to permit limited expansion of the fuel cell stack () during operation, and the backbone () has adequate flexural strength to prohibit expansion of the stack () beyond operating dynamic limits of the stack ().

Fuel cell stack having an integrated end plate assembly

A keep warm system for a fuel cell, power plant ( ), typically of the PEM type, prevents freeze-sensitive portions of the power plant, such as the cell stack assembly (CSA) ( ) and the water management system ( ), from freezing under extreme cold external temperatures, during extended storage (CSA shut-down) periods. Pre-stored and pressurized fuel, typically hydrogen ( ), normally used to fuel the anode ( ) of the CSA, is used as fuel for a catalytic oxidation reaction at a catalytic burner ( ) to produce heated gas that convectively passes in heat exchange relation with the freeze sensitive portions ( ) of the power plant ( ). The convective flow of the heated gases induces the air flow to the burner ( ), obviating the need for parasitic electrical loads. Thermal insulating means ( ) substantially enclose the freeze-sensitive CSA ( ) and/or the water management system ( ), and the convective flow of the heated gas from the catalytic burner ( ), to improve system thermal efficiency.

Method and apparatus for preventing water in fuel cell power plants from freezing during storage

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West Hartford, CT, United States of America

Leonard A Bach