Osmak V. More efficient use of insulated covered wagons by improving the methods of experimental determination of parameters of heating state

The thesis is devoted to solving scientific tasks to improve methods of experimental and theoretical determination of the parameters of the state covered wagons heat insulated and increase their effective use in operation. Methods of mathematical statistics analysis was performed using and operating parameters of isothermal rolling stock. The method of system analysis examined the design features refrigerator car. With the use of mathematical simulation of thermal processes in the "Wagon - Environment system", which was based on the equations of heat transfer and thermal balance research performed wasof thermal processes in thermal testing by heating the air in the cargo space of the wagon Investigation of heat mass transfer between the internal space and the environment through fence car body made by physical modeling. The procedure of identifying the most informative indicators of local heat and tightness of the results of thermal testing to assess the quality of heat-shielding enclosure of car body based conductive heat transfer and integrity. The experimental study to determine the thermal performance real-thermal process in the test car was performed. The reliability obtained in the thesis research results confirmed correctness of the accepted assumptions rigor of theoretical analysis, the coincidence of the results of analytical and experimental research (the error does not exceed 2,4-5,6%). The proposed concept of certification of heating covered wagons with insulation, which allows at any time to receive information about operation of thermal properties of the enclosure body, limiting its suitability, quality, production, repair and maintenance of car.