TRANSPORTATION OF SUMMER TYPES OF DIESEL FUELS BY TANK WAGONS AT NEGATIVE TEMPERATURES
Transportation of summer types of diesel fuels (DT) in tank wagons is not possible without loss of performance in climatic zones with low temperature conditions. This is due to the properties of petroleum products, which at low ambient temperatures undergo phase stratification followed by the release of crystals-paraffin hydrocarbons (n-paraffins). This process makes the fuel unusable. Currently, transportation of negative temperatures is prohibited by regulations. We offer to transport DT of summer brands in the tank wagons with external thermal accumulators with the heat accumulating material of big effective heat capacity, together with thermal insulation. The article analyzes the methods of transportation of various types of diesel fuels, justifies the need to find solutions to the problem, proposes a technical solution concerning the improvement of the boiler design of the tank car, analyzes the heat storage substances used in thermal batteries.