How does a refrigerator work?

How does a refrigerator work?

Image credit: en.wikipedia.org

How was a refrigerator invented?

  Can you imagine your life without refrigerators? Probably not because this appliance keeps things inside it preserved for a long time. It cools the temperature inside it to a temperature below the ambient temperature of the room outside. It was invented by the Scottish professor William Cullen in 1977. 

How does a refrigerator work?

  But then how does this so important household appliance work? Let's see... Here how's it works...

1. There is a liquid in the refrigerator called as the coolant. It enters a valve called as the expansion valve. As it passes through this valve, the sudden drop in pressure and temperature makes the liquid to expand, cool and turn into gas.
2. Then there is a chiller cabinet in the refrigerator. As the coolant passes through it, it absorbs and removes the heat in the food.
3. Then the coolant enters the compressor and it gets squeezed over there and its temperature is raised. The coolant no more remains cool. And now its a hot high-pressured gas.
4. The hot coolant flows through the radiator pipes which are at the back of the refrigerator. It gives away heat as it flows through the radiator pipes.
5. The coolant then flows back to the expansion valve and the cycle repeats. 

  As a result of the above cycle, heat is continuously picked up from the inside of refrigerator and is put down outside it. The sides of refrigerator also have radiator pipes which radiate heat. Thus the sides and back of the refrigerator become hot. 

Conclusion:

  So basically working of a refrigerator needs only 5 simple steps as noted below:

1. Coolant enters expansion valve and expands due to drop in pressure and temperature.
2. It passes through the chiller cabinet and absorbs the heat from inside the refrigerator.
3. Coolant enters the compressor and becomes a hot gas.
4. Coolant passes through the radiator pipes and radiates the heat.
5. The cycle continues.

Posts before October 2021 have been marked as "Old Posts". Less likely, but they might have out dated or incorrect information, ugly looking bits of code, no labels, etc. Don't get me wrong, many of these posts are top-notch and interesting too.

I thought it would be better not to delete or revamp these posts, even if they suck. The bitter truth is that old works always suck, but I take that as a positive tool to convey that I am growing. Besides there's no better way to showcase my journey without these old, messy, poorly written posts!

Old Post