Journal
Scientific journal NRU ITMO. Series "Refrigeration and Air Conditioning"
UDK621.64
Issue:4 (27)
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The comparing analysis of schemes demonstrating an issuance of cooled LNG under pressure
Annotation
Before the transportation of liquefied natural gas through a pipeline it is cooled. For this purpose a method of evacuating the vapour space above the liquid is frequently using. This work compares the energy costs of issuance of the cooled LNG pressurized by squeezing his own steam and with the use of the liquid pump. Also energy costs for LNG precooling with liquid nitrogen are showed. It is shown that the lowest power consumption of these three schemes shows an embodiment of cooling by evacuation with subsequent liquid injection pump.