Abstract
Following on from the experience gained on the Typhoon generator set, ALSTOM Power’s generic dual fuel Dry Low Emissions (DLE) combustion system has been successfully developed for operation on the Tempest generator set. The first engine fitted with the full DLE dual fuel system entered service in October 2000. NOx emissions levels of less than 30vppm at 15% O2 have been demonstrated on distillate fuel. Low levels of combustion dynamics and pilot burner tip temperatures have been demonstarted on both fuels as well as gas fuel emission levels remaining less than 20vppm at 15% O2, the same as the gas only DLE version. This paper describes the development of the dual fuel DLE system on the Tempest at ALSTOM’s test facilities in Lincoln, England as well as the commercial operating experience gained to date on both the full dual fuel DLE and liquid standby DLE systems. The commercial operating experience will cover areas such as operating concept, liquid starting reliability, and site issues encountered. The lead Tempest gas only DLE units have successfully completed 22000 hours operation without any issues and will be discussed in the paper.
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