Results 301 to 310 of about 101,154 (354)

Cooling Turbine Technology

Aircraft Engineering and Aerospace Technology, 1978
Aircraft air‐conditioning has developed over a period of about thirty years. In that time the general appearance of the hardware has changed surprisingly little. The components used remain the same as in the earliest application; air to air heat exchangers, high speed expansion turbines, valves and water extraction devices combined into what is now ...
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Cooling Effectiveness on Film Cooled Turbine Blades

Heat Transfer: Volume 5 — Computational, Aerospace and Environmental Heat Transfer, 2001
Abstract This paper presents experiments on the cooling effectiveness obtained for two different injection locations on the suction side of a turbine blade at transonic flow conditions. Previous results of a computational analysis and flow visualization indicated that a separation bubble is present on the suction side at a location x/L =
M. Derrar, J. Nagler, W. W. Koschel
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ON THE COOLING OF GAS TURBINES

Journal of Flow Visualization and Image Processing, 2001
This article deals with measurements of convective heat transfer coefficients in three fluid flow patterns that concern both internal and external cooling of gas turbine components; in particular, the flow in a couple of smooth, or ribbed, ducts connected by a 180° sharp turn, a jet in cross-flow, and a jet impinging on a wall for short nozzle-to-wall ...
ASTARITA, TOMMASO, CARDONE G., CARLOMAGNO G. M.   +2 more
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The Hydrogen-Cooled Turbine Generator

Transactions of the American Institute of Electrical Engineers, 1940
HYDROGEN cooling for electrical machinery was first proposed to the industry through an AIEE paper presented in 1925.1 The first hydrogen-cooled machine to be placed in commercial service was a 12,500-kva synchronous condenser, installed in 1928.2 This was followed by other machines of this type, and later, the hydrogen-cooled frequency-converter was ...
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Heat Pipe Turbine Vane Cooling

SAE Technical Paper Series, 1992
<div class="htmlview paragraph">The basic feasibility and anticipated benefits to using heat pipe technology to cool the turbine vanes of gas turbine engines are presented in this paper.</div> <div class="htmlview paragraph">This concept involves fitting out the vane interior as a heat pipe, extending the vane into an adjacent heat ...
Joseph M. Gottschlich, Matthew Meininger
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Evolution of Turbine Cooling

Volume 1: Aircraft Engine; Fans and Blowers; Marine; Honors and Awards, 2017
Turbine cooling is a battle between the desire for greater hot section component life and the techno-economic demands of the marketplace. Surprisingly little separates the haves from the have nots. The evolution of turbine cooling is loosely analogous to that of the Darwinian theory of evolution for animals, starting from highly simplistic forms and ...
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Advanced Cooled Turbine Airfoil Aerodynamic Investigation

Journal of Aircraft, 1977
Abstract : Several connectively cooled trailing edge designs were investigated with the objective of eliminating the need for film cooling on the airfoil suction side. A 43.4% reduced solidity first stage turbine vane having potential application for an advanced Air Force fighter engine was selected for the evaluation.
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Calculations of Cooled Turbine Efficiency

Journal of Engineering for Gas Turbines and Power, 2006
The efficiency of a cooled turbine stage has been discussed in the literature. All proposed definitions compare the actual power output with an ideal output, which has to be determined; but usually, one of two definitions has been used by turbine designers. In the first, the so-called Hartsel efficiency, the mainstream gas flow, and the various coolant
J. H. Horlock, Leonardo Torbidoni
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The Transpiration-Cooled Gas Turbine

Journal of Engineering for Power, 1970
This paper describes a program of experimental and analytical research designed to evaluate the aerodynamic and thermodynamic performance of transpiration-cooled porous surfaces in the high-temperature gas turbine. The aerodynamic penalties of effusing coolant through a set of nozzle blades are shown to be small, particularly when compared with the ...
F. J. Bayley, A. B. Turner
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Wind turbine cooling technologies

2010
With the increase of the unit capacity of wind turbines, the heat produced by different components rise signifi cantly. Effective cooling methods should be adopted in developing larger power wind turbine. In this chapter, the operating principle and main structure of wind turbines are fi rstly described, following with the analysis of heat production ...
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