The coolant is a liquid as it enters the expansion valve (yellow). As it passes through, the sudden drop in pressure makes it expand, cool, and turn into a gas (just like a liquid aerosol turns into a cool gas when you spray it out of a can)
As the coolant flows around the chiller cabinet (usually around a pipe buried in the back wall), it absorbs and removes heat from the food inside.
The compressor squeezes the coolant, raising its temperature and pressure. It's now a hot, high-pressure gas.
The coolant flows through thin radiator pipes on the back of the fridge, giving out its heat and cooling back into a liquid as it does so.
The coolant flows back through the insulated cabinet to the expansion valve and the cycle repeats itself. So heat is constantly picked up from inside the refrigerator and put down again outside it.
The coolant is a liquid as it enters the expansion valve (yellow). As it passes through, the sudden drop in pressure makes it expand, cool, and turn into a gas (just like a liquid aerosol turns into a cool gas when you spray it out of a can)As the coolant flows around the chiller cabinet (usually around a pipe buried in the back wall), it absorbs and removes heat from the food inside.The compressor squeezes the coolant, raising its temperature and pressure. It's now a hot, high-pressure gas.The coolant flows through thin radiator pipes on the back of the fridge, giving out its heat and cooling back into a liquid as it does so.The coolant flows back through the insulated cabinet to the expansion valve and the cycle repeats itself. So heat is constantly picked up from inside the refrigerator and put down again outside it.
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