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Download Advanced Gas Turbine Cycles: A Brief Review of Power by J. H. Horlock PDF

By J. H. Horlock

ISBN-10: 0080442730

ISBN-13: 9780080442730

Primarily this ebook describes the thermodynamics of fuel turbine cycles. the quest for top gasoline turbine potency has produced many diversifications at the uncomplicated "open circuit" plant, concerning using warmth exchangers, reheating and intercooling, water and steam injection, cogeneration and mixed cycle crops. those are defined totally within the text.

A evaluation of contemporary proposals for a couple of novel fuel turbine cycles can also be integrated. some time past few years paintings has been directed in the direction of constructing fuel generators which produce much less carbon dioxide, or vegetation from which the CO2 might be disposed of; the consequences of a carbon tax on electrical energy pricing are thought of.

In featuring this large survey of fuel turbine cycles for energy new release the writer calls on either his educational adventure (at Cambridge and Liverpool Universities, the fuel Turbine Laboratory at MIT and Penn nation collage) and his business paintings (primarily with Rolls Royce, plc.) The publication can be crucial examining for ultimate yr and masters scholars in mechanical engineering, and for practicing engineers.

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Additional info for Advanced Gas Turbine Cycles: A Brief Review of Power Generation Thermodynamics

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1992), Combined Power Plants, Pergamon Press, Oxford, See also 2nd edn, Krieger, Melbourne, FL, 2002. W. (1991). Analysis of Engineering Cycles 4th edn, Pergamon Press, Oxford. [4] Caputa, C. (1%7), Una Cifra di Merito Dei Cicli Termcdinamici Directti, Il Calore 7, 291-300. 1. Introduction In Chapter 1, the gas turbine plant was considered briefly in relation to an ideal plant based on the Carnot cycle. 4, it was explained that the closed cycle gas turbine failed to match the Carnot plant in thermal efficiency because of (a) the ‘6 effect’ (that heat is not supplied at the maximum temperature and heat is not rejected at the minimum temperature) and (b) the ‘ueffect’ (related to any entropy increases within the plant, and the consequent ‘widening’ of the cycle on the T, s diagram).

BTBT.. XIR. 2. 1. 1. 1. g. in the entry and exit ducting, the combustion chamber, and the heat exchanger). These are usually expressed in terms of non-dimensional pressure loss coefficients, t=A P / @ ) ~ ,where @)m is the pressure at entry to the duct. ) As alternatives to the isentropic efficiencies for the turbomachinery components, and qc,which relate the overall enthalpy changes, small-stageor polytropic efficiencies(qpTand qK) are often used. ") = xT. 1 Performance criteria Component Criterion of performance Turbine Isentropic efficiency % = Enthalpy drophentropic enthalpy drop Isentropic efficiency = Isentropic enthalpy riselenthalpy rise Effectiveness (or thermal ratio) E = Temperature rise (cold side)/maximum temperature difference between entry (hot side) and entry (cold side) Compressor Heat exchanger 34 Advanced gas turbine cycles Along a compression line, p/Tz = constant, where now z = [yrlpc/(y- l)], and exit and entry temperatures are related by T2/Tl = rgh) = xc.

The pressure loss through the combustion chamber is allowed for by a pressure loss factor Ap23 = ( p 2 - p 3 ) / ~ 2so , that (p3/p2)= 1 - (Ap/p)23. Similarly, the pressure loss Advanced gas turbine cycles 40 I 1 S Fig. 1 1. T , s diagram for irreversible open circuit simple plant [CBvI. 28) ) ~ 8 = { [ ( ~ ) 3 4 - ~IX(AP/P)I/(Y~)M is smallwhere TJ = ( ~ p a ) d ( ~ p gand The appearance of n as the index of x in Eq. 28) needs to be justified. Combustion in gas turbines usually involves substantial excess air and the molecular weight of the mixed products is little changed from that of the air supplied, since nitrogen is the main component gas for both air and products.

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Advanced Gas Turbine Cycles: A Brief Review of Power Generation Thermodynamics by J. H. Horlock

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