Results 201 to 210 of about 5,265 (262)
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Proceedings of the Institution of Mechanical Engineers, 1950
The cooling of turbines offers the alternative advantages of the use of higher cycle-maximum-temperatures than are possible with uncooled turbines, with consequent increase of thermal efficiency and power output for a given size of compressor, or the use of lower quality materials for a given turbine inlet-temperature.
A. G. Smith, R. D. Pearson
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The cooling of turbines offers the alternative advantages of the use of higher cycle-maximum-temperatures than are possible with uncooled turbines, with consequent increase of thermal efficiency and power output for a given size of compressor, or the use of lower quality materials for a given turbine inlet-temperature.
A. G. Smith, R. D. Pearson
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Hydrogen-cooled turbine generators
Electrical Engineering, 1940ONE of the most radical innovations in the design of electrical machinery in recent years has been the adoption of hydrogen cooling for large turbine generators. Now that a number of the large hydrogen-cooled units are in operation, it would seem timely to review the experience gained in building and operating this new-type equipment.
M. D. Ross, C. C. Sterrett
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Proceedings of the Institution of Mechanical Engineers, 1970
This paper lists the steps in the development chain of air cooling for gas turbine components, and represents transpiration cooling as the ultimate method. The three modes of heat transfer involved in transpiration cooling, gas side heat transfer, coolant side heat transfer and interstitial heat transfer, are discussed separately.
F. J. Bayley, A. B. Turner
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This paper lists the steps in the development chain of air cooling for gas turbine components, and represents transpiration cooling as the ultimate method. The three modes of heat transfer involved in transpiration cooling, gas side heat transfer, coolant side heat transfer and interstitial heat transfer, are discussed separately.
F. J. Bayley, A. B. Turner
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Journal of Engineering for Power, 1959
Turbine cooling, originally developed because of a shortage of heat-resistant alloys, is of interest for certain applications to permit operation of gas-turbine engines above uncooled temperatures. Specific power output would be increased, and in some cases specific fuel consumption decreased, depending on the engine type.
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Turbine cooling, originally developed because of a shortage of heat-resistant alloys, is of interest for certain applications to permit operation of gas-turbine engines above uncooled temperatures. Specific power output would be increased, and in some cases specific fuel consumption decreased, depending on the engine type.
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The Hydrogen-Cooled Turbine Generator
Transactions of the American Institute of Electrical Engineers, 1940HYDROGEN 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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On the Definition of “Cooling Losses” in Cooled Gas Turbines
The Journal of the Royal Aeronautical Society, 1967In the analysis of cooled gas turbine cycles, the quantity of heat removed by the coolant is termed as “cooling loss”. In the literature, these cooling losses are accounted for by the use of either(a) Cooling Loss Factor, or(b) Cooling Number.Brown defines Cooling Loss Factor (CLF) as a ratio of heat removed by coolant per unit time divided by the ...
V. A. Ogale, B. W. Jaspers
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Efficiency of a Cooled Turbine
2018D5 Turbine Efficiency Starting from a single stage un-cooled turbine, we extend the definition of turbine efficiency to cover both cooled and multi-stage turbines. The consideration of secondary effects such as pumping work, windage and sealing flows is discussed and the concepts of chargeable and non-chargeable flows are introduced.
Joachim Kurzke, Ian Halliwell
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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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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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Cooling Effectiveness on Film Cooled Turbine Blades
Heat Transfer: Volume 5 — Computational, Aerospace and Environmental Heat Transfer, 2001Abstract 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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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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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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