Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion

Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 1 (Q.No. 7)
7.
The formation of frost on cooling coils in a refrigerator
increases heat transfer
improves C.O.P. of the system
increases power consumption
reduces power consumption
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
14 comments Page 2 of 2.

Vicky said:   1 decade ago
I think during formation of frost only a part of latent heat is absorbed by the evaporator coils during frosting which will finally effect the overall heat transfer results in increasing the compressor effort.

Raviteja said:   1 decade ago
Once the frost is formed, it doesn't need to get form again, frost is stucked on coils, soair directly comes out cooling pad.

Biswojit said:   1 decade ago
Due to frost the system runs continuously. So increase the power consumption.

Gokul said:   1 decade ago
Because due to frosting the heat transfer may be decreased in evaporator. So it takes more time to reach the cooling. It may increase the running cost of compressor.
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