Transcription: The modern mechanical refrigerator works on the principle that a liquid absorbs heat when it turns to a gas. Pressurized liquid refrigerant leaves a storage container under high pressure. It flows through a metering device containing a length of narrow tubing where the pressure drops and the liquid vaporizes into gas. As the refrigerant passes through the coils of the evaporator, it absorbs heat and cools the inside of the cabinet. The low-pressure refrigerant vapor is pumped into the compressor. The compressed vapor, now at an elevated temperature, flows at high pressure into the condenser. H ...