Inventario de Gases de Efecto Invernadero del Sector transporte de la Provincia de Chimborazo. Año base 2018

Abstract

The aim of this research was to implement an inventory of greenhouse gases in the transportation sector of Chimborazo province, based on the information obtained during 2018 and through the use of the emissions standard model and information from official sources on sales statistics, fuel properties, composition of the vehicle fleet and vehicle traffic intensity. First of all, the vehicle performance and the typical annual route were determined, then the vehicle fleet was structured based on the type of fuel and vehicle category. The main greenhouse gases emitted during the mobile combustion were identified and determine. Carbon dioxide (CO2) emissions were estimated using information on vehicle kilometers travelled (VKT) and its emission factor was also calculated. For methane (CH4) and nitrous oxide (N2O) emissions, it was necessary to use information on fuel consumption and emission factors proposed by the Intergovernmental Panel on Climate Change (IPCC). In addition, SO2 emissions were estimated by using information on fuel consumption and fuel properties. The results revealed that the transport sector contributes with the following values: CO2, 709 505.13 t / year, N2 O, 398.21 t / year, SO2, 248.68 t / year and CH4, 199.83 t / year. With the results presented it is concluded that in Chimborazo province gasoline-powered vehicles are the ones that produce the highest emissions of CO2 (54.23%), SO2 (56.23%) and CH4 (91.65%), while the main responsible for N2O emissions (80.55%) are diesel-powered vehicles. It is recommended to complement this inventory with other emission sources, such as emissions from vegetation as well as emissions generated by electrical and industrial generators.