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It only makes sense that people would ask how does a refrigerator work considering that they are a household appliance in almost every home in North America keeping all of our food fresh and preserved and beverages cold until needed.
When you’re sitting in your living room quietly and you hear the fridge powering up or something bothersome clicking and ticking in the back, doesn’t it get you worried? Wouldn’t it be great to know that refrigerator is working normally and why it turns on & off or if it’s breaking down?
Modern refrigerators today work on ammonia gas that liquefies when under high pressure using thermodynamics - when two different temperatures of things, touch or are near each other, the hotter surface cools and the colder surface warms up.
Through the use of a compressor, small valves and a coil, the liquid ammonia hits a low pressure, boils and changes to a vaporizing gas. The coils go through the coldest part of the fridge, which is the freezer and also passes through the regular part of the refrigerator. The colder ammonia in the coil absorbs the heat out of the freezer and fridge keeping the whole appliance cold. The compressor then takes back the ammonia gas and is recycled continuously.
The thermometer inside the fridge regulates the temperature making sure it’s always at the temperature setting and because you open and close the door etc. the temperature can alter causing the refrigerator to turn on to make it colder and then turns off again when at correct temperature.
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