CBSE Class 8 Answered
why there is a metal grill on the back of a fridge can anyone answer this question?
Asked by ojhautkarsh12345 | 10 Oct, 2018, 06:32: PM
Expert Answer
Figure shows the back side of refrigerator. Compressor pressurise the refrigerant fluid and sending back to refriferator
through the copper coolant tubes shown in figure.
After compression, this refrigerant fluid becomes hot and it is required to reduce its temperature.
Hece this hot fluid is sent through coolant tubes which is made to contact to the grill made up of thin metal tubes called radiating fins.
This arrangement makes the radiating fins to absorb heat from coolant tubes and radiate to surrounding environment.
More number of tubes makes large surface area and heat is radiated efficiently from the radiating fins of metal grill.
Answered by Thiyagarajan K | 10 Oct, 2018, 08:50: PM
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