FIELD: machine building.
SUBSTANCE: present invention relates to a method and a device for cooling a cryogenic heat exchanger for liquefying a stream of hydrocarbons, such as a stream of natural gas. Method includes receiving one or more refrigerant temperature readings, providing coolant temperature indication, comparing one or more coolant temperature readings with one or more corresponding predetermined threshold values and selection of one of the procedures for automatic cooling of the cryogenic heat exchanger in the warm state and automatic cooling of the cryogenic heat exchanger in the cold state based on the comparison results.
EFFECT: technical result consists in increase of heat exchanger cooling speed.
15 cl, 7 dwg
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