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Abstract
NO2 and NO emitted by a gas-turbine power station burning natural gas have been measured as a function of operating conditions. The power station comprises three units, each rated at 50 MW full load. The NO2 measurements were obtained by three different methods. At idle (about 15 MW per unit), the oxides of nitrogen in the exhaust gas are entirely in the form of NO2 which has a concentration of 30 ppm. As the load is increased, the NO2 concentration increases to a maximum of about 50 ppm at about 30 MW per unit and then decreases to about 25 ppm at full load. The NO concentration increases from zero at idle to 110 ppm at full load.
