Refrigeration cycle structure — Refrigerator vs. LNG plant
The principle of the 4-stage heat transfer process is the same, only the scale differs
1
Compress refrigerant with a compressor → Temperature rises
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2
Release heat to indoor air through the back coils
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3
Expand refrigerant through a narrow tube → Temperature drops sharply
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4
Absorb heat from food inside the refrigerator
1
Compress mixed refrigerant with a large compressor
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2
Release heat to the atmosphere/sea using air-cooled or seawater-cooled heat exchangers
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3
Expand refrigerant → Temperature drops to near -162℃
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4
Absorb heat from natural gas in the main heat exchanger and liquefy it