PROCESS COOLING SYSTEM AND METHOD USING SEAWATER.

摘要

A method for producing cold heat for cooling a process is provided. Seawater is pumped at a selected depth and cooled to create a mixture of ice and brine. The ice is separated from the brine. Cold heat is obtained by thawing the ice. A process cooling system for producing cold heat is also provided. A pumping station comprises a line system to obtain seawater and direct the seawater to an onshore cooling plant. A refrigerant circulates in an evaporation stage in a refrigeration circuit. A heat exchanger in the evaporation stage freezes a portion of the seawater in the line system with the refrigerant. A cooling plant is connected to the line system to receive the frozen seawater. The cooling plant comprises a separation tank for separating the frozen portion of seawater from brine, and a heat exchanger to cool the process by heat exchange with the frozen seawater.