This study was performed on fixed sources of air pollutants emission belonging to the city of Pinar del Rio in the province of the same name in Cuba, based on the need to meet the technological data of emissions of these sources, following as the application of theoretical methods for calculating the technological parameters that are not available in these centers, as well as following the forms set out in the Cuban norm for these purposes. Obtaining as results the rate of emission of air pollutants emitted, the gas peak flow and the speed of the gas mixture issued, concluding with the importance and use of this information in multiple studies such as air quality and inventory emissions, being part in these way of the environmental impact studies.

Keywords: Fixed Sources, Emissions.