Combustion tests with a gas turbine combustor were carried out to clarify the technical problems caused when liquefied butane was supplied and burned in the liquid phase in addition to evaluating methanol and liquefied butane as an alternative fuel. For methanol, a conventional dual-orifice type fuel injector, and for liquefied butane, the same dual-orifice type injector and two types of multi-hole injectors were tested. The results of combustion tests with both fuels were compared with those of conventional gas turbine fuels — kerosene and natural gas with respect to combustion performances and exhaust emissions. It was found that both fuels had some advantages over conventional fuels.

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