DEVELOPMENT OF REDUCING BOIL OFF LOSSES IN LNG TRANSPORTATION USING POLYAMIDE AS SUPPORTING MATERIAL

Natural gas is being hailed as alternative energy sources for petroleum, because it is almost no emissions of pollutants in the environment. Reserves are located far from customer area this necessitates their storage and transportation. Liquefying of gas to the cryogenic temperature is cost effective since it decreases the volume by a factor of more than 600. At the atmospheric pressure, the liquefaction temperature of LNG is under minus 163 degree Celsius. Delivering of liquefied LNG to terminals by road or rail transport is one of the simplest solutions of this problem. This kind of transport is possible only with using suitable tanks with the adequate insulation and fulfilling the transport requirements. For transportation LNG can be stored at -163°C, boil-off losses are normally occurs. Many scientific researchers were carrying out investigations on high insulating-power materials. The construction of storage tank hastwowall with vacuum in between them. Distance between walls is provided by system of supporting blocks made of plastic. This paper presents problem of heat leak between the walls and the supporting blocks. The investigations were carried out mathematically and, using ANSYS software.