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Title: Turbine airfoil with ambient cooling system

Abstract

A turbine airfoil usable in a turbine engine and having at least one ambient air cooling system is disclosed. At least a portion of the cooling system may include one or more cooling channels configured to receive ambient air at about atmospheric pressure. The ambient air cooling system may have a tip static pressure to ambient pressure ratio of at least 0.5, and in at least one embodiment, may include a tip static pressure to ambient pressure ratio of between about 0.5 and about 3.0. The cooling system may also be configured such that an under root slot chamber in the root is large to minimize supply air velocity. One or more cooling channels of the ambient air cooling system may terminate at an outlet at the tip such that the outlet is aligned with inner surfaces forming the at least one cooling channel in the airfoil to facilitate high mass flow.

Inventors:
; ;
Publication Date:
Research Org.:
Siemens Energy, Inc., Orlando, FL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1255970
Patent Number(s):
9,359,902
Application Number:
13/930,479
Assignee:
Siemens Energy, Inc. (Orlando, FL NETL
DOE Contract Number:  
FC26-05NT42644
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Jun 28
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Campbell, Jr, Christian X., Marra, John J., and Marsh, Jan H. Turbine airfoil with ambient cooling system. United States: N. p., 2016. Web.
Campbell, Jr, Christian X., Marra, John J., & Marsh, Jan H. Turbine airfoil with ambient cooling system. United States.
Campbell, Jr, Christian X., Marra, John J., and Marsh, Jan H. Tue . "Turbine airfoil with ambient cooling system". United States. https://www.osti.gov/servlets/purl/1255970.
@article{osti_1255970,
title = {Turbine airfoil with ambient cooling system},
author = {Campbell, Jr, Christian X. and Marra, John J. and Marsh, Jan H.},
abstractNote = {A turbine airfoil usable in a turbine engine and having at least one ambient air cooling system is disclosed. At least a portion of the cooling system may include one or more cooling channels configured to receive ambient air at about atmospheric pressure. The ambient air cooling system may have a tip static pressure to ambient pressure ratio of at least 0.5, and in at least one embodiment, may include a tip static pressure to ambient pressure ratio of between about 0.5 and about 3.0. The cooling system may also be configured such that an under root slot chamber in the root is large to minimize supply air velocity. One or more cooling channels of the ambient air cooling system may terminate at an outlet at the tip such that the outlet is aligned with inner surfaces forming the at least one cooling channel in the airfoil to facilitate high mass flow.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 07 00:00:00 EDT 2016},
month = {Tue Jun 07 00:00:00 EDT 2016}
}

Patent:

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