Abstract
A low emission combustor, which uses a pre-vaporization pre-mixing lean combustion system for a 100 kW automotive ceramic gas turbine (CGT), has been designed, developed and subjected to performance tests. In the early stages of the tests, flashback and auto-ignition caused by extremely high combustor inlet temperature were major problems of the development. Introducing air to the boundary layer of the mixture flow, was one of the measures which effectively prevented flashback. Auto-ignition characteristic was described by a semi-experimental equation. Requirements needed to achieve CGT performance, such as operation range due to combustion characteristics, pressure loss and temperature distribution were fully satisfied.
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