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On the Definition of “Cooling Losses” in Cooled Gas Turbines

Published online by Cambridge University Press:  04 July 2016

V. A. Ogale  and
B. W. Jaspers
V. A. Ogale
Affiliation:
Gas Turbine Laboratory, Technological University Delft, The Netherlands
B. W. Jaspers
Affiliation:
Gas Turbine Laboratory, Technological University Delft, The Netherlands
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Extract

In 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 total turbine output per unit time.

Traupel defines the Cooling Number (CN) as the ratio of heat loss to isentropic enthalpy drop.

Cohen and Martin use the CLF in their analyses and May uses the CN.

It is the purpose of this note to give a simple correlation of the two and to suggest a new definition to account for these losses.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 71 , Issue 680 , August 1967 , pp. 566 - 567
Copyright
Copyright © Royal Aeronautical Society 1967

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References

1.Brown, T. W. F.Some Factors in the Use of High Temperatures in Gas Turbines. Proc Inst Mech Engrs, Vol 162, No 2, p 167, London, 1950.Google Scholar
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3.Traupel, W.Thermische Turbomaschinen Band I, 2nd edition. Springer Verlag, Berlin, 1966.CrossRefGoogle Scholar
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