ENERGY EFFICIENCY OF LIFE PROTECTION OF SYSTEMS FOR RAILWAY VEHICLES

Abstract

Passenger cars consume a fairly significant share of electricity to create comfortable conditions, when transporting passengers. The conducted studies of energy efficiency improvement taking into account the results of mathematical modeling of thermal processes it was established that during the design of passenger cars designers do not take into account a number of factors, affecting energy efficiency life support systems for passenger cars. In the calculations of the thermal balance of the car only heat is taken into account, supplied by heating pipes for more accurate calculations thermal balance of a passenger car the given heat must be taken into account in the thermal balance of the car. Experimental measurements confirmed presence zones of temperature fields with different temperature modes, separated by a decorative ceiling in which the zone of constructive ceiling cavity overheats over the normative indicators. This leads to increased heat loss through the roof of the carriage. In particular, it has been established that the proposed modernization on increasing the energy efficiency of the heating system can be implemented at relatively low cost, in the conditions of existing carriages depot, which will reduce energy consumption for heating 13.4% or UAH 25.9 million for a year. Improved mathematical model non-stationary thermal regime of a passenger car allows comprehensive analysis thermal processes of a passenger car, taking into account its constructive changes by mathematical experiment. Thus, this study will allow not only to increase energy efficiency but also provides grounds for reducing the power of the heating system by at least 10%, which will reduce the metal content of the heating system and, as a consequence of the reduction of the wagon's packaging, reduction of power of electric devices, wires, and the number of electrically heated TENs will decrease.