Development of high temperature turbine subsystem technology to a ''technology readiness status'': Phase II. Progress report for April 1978

Technical Report · Wed May 10 04:00:00 EDT 1978

DOI:https://doi.org/10.2172/6807459· OSTI ID:6807459

Caruvana, A.

Design requirements for the closed loop water cooling system to be used in the Hot Gas Path Development Test Stand (HGPDTS) were completed. A high pressure system will supply cooling water to the nozzle sector, a low pressure system will supply cooling water to the gas sample probes. Test equipment to determine the flow characteristics of the HGP test nozzle cooling tubes prior to final assembly is described. The sensitivity of this test equipment to flaws in the cooling tubes is discussed quantitatively. A nine vane, one half scale, nozzle cascade was constructed and is being assembled in the transonic wind tunnel in preparation for tests to evaluate the effects of the sidewalls which approximate two half throats around the test vane on the turbine simulator nozzle. Gas side heat transfer coefficients for the simulator nozzle were calculated. Data taken on the 28 scale stationary one-g simulation of a horizontal, partial flow cooling passage have verified the analytical predictions. Thirty (30) percent of the passage perimeter can be expected to be wetted by the coolant flow under operating conditions. A three bearing rotor design was selected. The combustor configuration was shortened by four inches which might allow for a future shortening of the mid section. A risk analysis was performed for the first stage nozzle in the HGPDT as a basis for judging the risk to program success of various options in the design and manufacture of this hardware. Interstage gas path temperature profiles were calculated. Details of the design, manufacture, materials and process development status for each stage of the turbine (nozzles and buckets) are presented.

• Research Organization: General Electric Co., Schenectady, N.Y. (USA). Gas Turbine Div.
• OSTI ID: 6807459
• Report Number(s): FE-1806-45
• Country of Publication: United States
• Language: English

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20 FOSSIL-FUELED POWER PLANTS
200104* -- Fossil-Fueled Power Plants-- Components
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DESIGN
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GAS TURBINES
HIGH TEMPERATURE
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NOZZLES
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