New PDF release: Advanced Gas Turbine Cycles: A Brief Review of Power

New PDF release: Advanced Gas Turbine Cycles: A Brief Review of Power

By J. H. Horlock

Primarily this e-book describes the thermodynamics of gasoline turbine cycles. the hunt for top fuel turbine potency has produced many diversifications at the easy "open circuit" plant, regarding 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 gasoline turbine cycles is additionally integrated. some time past few years paintings has been directed in the direction of constructing fuel generators which produce much less carbon dioxide, or crops from which the CO2 should be disposed of; the results of a carbon tax on electrical energy pricing are thought of.

In providing this extensive survey of fuel turbine cycles for strength iteration the writer calls on either his educational event (at Cambridge and Liverpool Universities, the gasoline Turbine Laboratory at MIT and Penn nation college) and his business paintings (primarily with Rolls Royce, plc.) The publication can be crucial analyzing for ultimate 12 months and masters scholars in mechanical engineering, and for training engineers.

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Extra resources for Advanced Gas Turbine Cycles: A Brief Review of Power Generation Thermodynamics

Sample text

The specific work of the two cycles is the same (Q. 2)), and reaches a maximum at x= where (wlcpTl)= (eln - 1>2. 3. The reversible reheat cycle [CHTHT], If reheat is introduced between a high pressure turbine and a low pressure turbine then examination of the T, s diagram (Fig. 4a) shows that the complete cycle is now made up Chapter 3. 5 ISENTROPIC TEMPERATURE RATIO Fig. 3. Thermal efficiencies of closed reversible cycles. )f two types of elementary cycles, 1,2,3,4” and 4”,4/,3/, 4. The efficiency of the latter :ycle is 17 = 1 - ( l/xA), where xA = T4,/T4n= T3,/T4;it is less than that of the former :ycle 77 = 1 - (l/x) and the overall efficiency of the ‘combined’ cycle is therefore T T 3 3‘ 4 1 S a S b Fig.

5]). 17). Thus the work lost due to internal irreversibility within the control volume when heat transfer takes place is still ToAFR,as when the heat transfer is limited to exchange with the environment. 19) where is the work potential, sometimes called the thermal energy of the heat rejected. The above analysis has been concerned with heat transfer from the control volume. Consider next heat [de]: = [dQREV]itransferred to the control volume. Then that heat could be reversibly pumped to CV (at temperature T ) from the atmosphere (at temperature To)by a reversed Carnot engine.

15) where A = (a- p - l), B = -2a, C = ap. Solution of this equation gives + x, = ap/{a [a(p - a)(p - l)lln}. 5 ISENTROPIC TEMPERATURE RATIO [XI Fig. 8. Graphical plot for [CHTII cycle (after Horlock and Woods [2]). 75 Chapter 3. 21) l)]/X(P - x). Fig. e. 4. The location of the maximum net work output is obvious. The maximum cycle efficiency point is obtained by the graphical construction shown (a line drawn tangent to NDNW at x,, from the point where the line NDHT meets the x axis at x = p). 344), as calculated from Eqs.

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