RESEARCH OF OPPORTUNITY OF APPLICATION THE PLASTIC FOAM THERMAL ISOLATION IN TANKS FOR LIQUID METHANE AS MOTOR FUEL

Abstract

Liquefied methane as the motor fuel can already now effectively be used in some types of transport not having long breaks in work (urban buses, taxi, quarrer automobiles etc.). For such purposes it is possible to create a rather cheap cryogenic high-strength tank from fibreglass with thermal isolation from plastic foam. In work on the basis of computer-calculated thermodynamic model the influence of thickness of isolation, degree of filling of a tank on duration of a lost-free storage time and initial stock of methane is investigated. The existence of optimum thickness of isolation appropriate to the maximal storage time methane is established. The interesting results are received at variations all variable in case of restrictions of a storage time for the maximal increase of weigh tfilled in a methane tank. From the decision of a task in such statement is received, that to a case of lost-free storage liquid methane during 24  hours at thickness of isolation only 53 mm and degrees of filling of a tank 0,5 correspond weigh of methane in amount of 29 kg.