Abstract
The public-transport sector represents, on a global level, a major ecological and economic concern. Improving air quality and reducing greenhouse gas (GHG) production in the urban environment can be achieved by using electric buses instead of those operating with internal combustion engines (ICE). In this paper, the energy consumption for a fleet of electric buses Solaris Urbino 12e type is analyzed, based on the experimental data taken from a number of 22 buses, which operate on a number of eight urban lines, on a route of approximately 100 km from the city of Cluj-Napoca, Romania; consumption was monitored for 12 consecutive months (July 2018–June 2019). The energy efficiency of the model for the studied electric buses depends largely on the management of the energy stored on the electric bus battery system, in relation to the characteristics of the route traveled, respectively to the atmospheric conditions during the monitored period. Based on the collected experimental data and on the technical characteristics of the electric buses, the influence of the atmospheric conditions on their energy balance was highlighted, considering the interdependence relations between the considered atmospheric conditions.
Highlights
Urban public transport plays a very important role in society, as it is the current means of transport serving a significant number of people every day
As the associated with integration into the transport the electric buses are high, it iscosts necessary to carry outthe studies and research inurban order to providesystem the bestofsolution in relation aretheir high,optimal it is necessary to carry out studies research inimposed order toby provide the best solution in to use, taking into account the and particularities the zoning characteristics relation to their optimal use, taking into account the particularities imposed by the zoning
The climatic parameters were monitored during a calendar year respectively, and give a on clear the atmospheric conditions and their influence on the energy consumption, thepicture energy regarding the atmospheric conditions and their influence on the energy consumption, respectively, recovery during the operation of the electric buses
Summary
Urban public transport plays a very important role in society, as it is the current means of transport serving a significant number of people every day. The sustainable tendency of urban mobility is to transport as many people daily as possible, with ecological, nonpolluting means of transport, which will have a direct effect on the reduction of the greenhouse gases (GHG), and on the reduction of the environmental noise, traffic congestion, and the infrastructure vibration due to the vehicles equipped with internal combustion engines (ICE). Due to the tendency of the big cities agglomeration, there is a need to increase the number of buses in the public transport fleets, and if the bus fleet is not renewed with environmentally friendly, nonpolluting means of public transport, it will result an increase of the environmental pollution (chemical and acoustic) that would affect the health of the population. By renewing the bus fleet park of the public transport companies, the aim is to encourage the use of the environmentally friendly, nonpolluting means of transport, to the detriment of using personal cars in urban traffic
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