Selection of cryogenic tanks for modernization of small-scale LNG carriers
Annotation
The article examines the existing ship systems of food and fuel tanks. When designing new or renovating existing LNG carriers, it is necessary to solve the problem of choosing the type of cryogenic tanks. Cryogenic tanks of small-scale volume differ significantly from cryogenic tanks of ocean tankers in size, design solutions and operating mode.The task of forming a fleet of inland and coastal LNG carriers is extremely relevant for the Russian Federation due to its low population density, underdeveloped road network, and the remoteness of settlements from natural gas sources. Taking into account the scale of the problem, the most attractive option for production of such vessels from an investment point of view is the modernization of out-of-date oil tankers. With such modernization, it is necessary to replace the product tanks for diesel fuel with cryogenic tanks. It is necessary to maximize the use of the cargo capacity and volume of the ship hold space as well as to ensure satisfactory rates of LNG losses from evaporation.
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