Numéro : 1921 - Year : 1983

Combustion chambers with reverse flow for small gas turbines

A. MESTRE, Ingénieur à l' ONERA
G.LAGAIN, Ingénieur à TURBOMECA

Test bench experimentation of reverse flow combustion chambers for small gas turbines was first oriented towards atmospheric operation in order to allow direct observation of the flame and corresponding movie pictures.

Two different types of fuel injection were compared : mechanical pulverisation and prevaporisation. The latter technique gives higher performance: better temperature distribution, lower emission of pollutants, higher efficiency. On the other hand, cold start seemed easier with mechanical injection. Therefore auxiliary fuel injectors had to be used.

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