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Abstract

An energy and exergy balance in the process of spray combustion in a model tubular gas turbine combustor has been made to determine the combustion efficiency and second law efficiency of the process at different operating conditions. The velocity, temperature and species concentration fields in the combustor have been evaluated numerically from a two-phase separated flow model of the spray along with suitable reaction kinetics for the gas phase reaction. A theoretical model of exergy analysis, based on availability transfer and flow availability, has been developed to predict the second law efficiency of the combustion process in the gas turbine combustor. A comparative picture of the functional relationships of combustion efficiency and second law efficiency of the process with the operating parameters of the combustor have been made to throw light on the trade-off between the effectiveness of combustion and the lost work due to thermodynamic irreversibility.

Keywords

combustion efficiency exergy gas turbine combustor second law efficiency spray combustion

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References

Amin

E. M.

Andrews

G. E.

Pourkishnian

Williams

Yetter

R. A.

A computational study of pollutant generation in gas turbine combustor. Trans. ASME, J. Engng for Gas Turbine and Power, 1997, 119, 76–83.

Tolpadi

A. K.

Calculation of two-phase flow in gas turbine combustor. Trans. ASME, J. Engng for Gas Turbine and Power, 1995, 117, 695–703.

Sokolov

K. Y.

Tumanovskiy

A. G.

Gutnik

M. N.

Sudarev

A. V.

Zakharov

Y. I.

Winogradov

E. D.

Mathematical modelling of an annular gas turbine combustor. Trans. ASME, J. Engng for Gas Turbine and Power, 1995, 117, 94–99.

H. K.

Lee

F. H.

Wang

M. W.

Numerical study on heat and mass transfer in a liquid-fuelled gas-turbine combustor. Int. J. Heat and Mass Transfer, 1993, 36 (13), 3271–3281.

Ramos

J. I.

A numerical study of a swirl stabilised combustor. J. Non-Equilibrium Thermodynamics, 1985, 10, 263–286.

Cameron

C. D.

Brouwer

Wood

C. P.

Samuelson

G.S.

A detailed characterization of the velocity and thermal fields in a model can combustor with wall jet injection. Trans. ASME, J. Engng for Gas Turbine and Power, 1989, 111, 31–35.

Bicen

A. F.

Senda

Whitelaw

J. H.

Scalar characteristics of combusting flow in a model annular combustor. Trans. ASME, J. Engng for Gas Turbine and Power, 1989, 111, 90–96.

Heitor

M. H.

Whitelaw

J. H.

Velocity, temperature and species characteristics of the flow in a gas turbine combustor. Combust. and Flame, 1986, 64, 1–32.

Bicen

A. F.

Jones

W. P.

Velocity characteristics of isothermal and combusting flows in a model combustor. Combust. Sci. Technol., 1986, 49, 1–15.

10.

Jones

W. P.

Toral

Temperature and composition measurement in a research gas turbine combustion chamber. Combust. Sci. Technol., 1983, 31, 249–275.

11.

Westbrook

C. K.

Dryer

F. L.

Simplified reaction mechanisms for the oxidation of hydrocarbon fuels in flames. Combust. Sci. Technol., 1981, 27, 31–45.

12.

Magnussen

B. E.

Hjertager

B. W.

On mathematical modelling of turbulent combustion with specified emphasis on soot formation and combustion. In Sixteenth International Symposium on Combustion, 1976, p. 719 (The Combustion Institute).

13.

Ozisik

M. N.

Radiative Heat Transfer, 1973 (John Wiley, New York).

14.

Sparrow

E. M.

Cess

R. D.

Radiation Heat Transfer, 1978 (Hemisphere, Washington D.C.).

15.

Clift

Grace

J. R.

Weber

M. E.

Bubbles, Drops and Particles, 1978 (Academic Press, London).

16.

Ranz

W. E.

Marshall

W. R.

Jr.

Evaporation from drops: Part II. Chem. Engng Progress, 1952, 48, 173–180.

17.

Dash

S. K.

Sengupta

S. P.

Som

S. K.

Transport processes and associated irreversibilities in droplet evaporation. Am. Inst. Aeronaut. Astronaut. J. Thermophysics and Heat Transfer, 1991, 5 (3), 366–371.

18.

Moran

M. J.

Shapiro

H. N.

Fundamentals of Engineering Thermodynamics, 1988 (John Wiley, New York).

19.

Hirt

C. W.

Cook

J. L.

Calculating three-dimensional flows around structures and over rough terrain. J. Comput. Physics, 1972, 10, 324–340.

20.

Khalil

K. H.

El Mahallawy

F. M.

Moneib

H. A.

Effect of combustion air swirl on the flow pattern in a cylindrical oil fired furnace. In Sixteenth International Symposium on Combustion, 1976, p. 135 (The Combustion Institute).

21.

Odgers

Kretschmer

Pearce

G. F.

The combustion of droplets within gas turbine combustors: some recent observations on combustion efficiency. Trans. ASME, J. Engng for Gas Turbine and Power, 1993, 115, 522–531.

Energy and exergy balance in a gas turbine combustor

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