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

Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 6 (Q.No. 1)
1.
A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be
1/4
1/3
3
4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
25 comments Page 3 of 3.

Jnk said:   8 years ago
cop = ref effect / work done.
= 120 - 30 / 30.
= 3.

Jignesh said:   8 years ago
cop = R.E/WORK = 90/30 = 3.

Ankusb said:   8 years ago
I agree with you @Indra 3 is the correct answer.

Indra bhushan rai said:   10 years ago
Refrigeration effect = 120-30 = 90.

cop = 90/30 = 3.

Gaurav said:   10 years ago
C.O.P = favourable effect/work input = 120/30 = 4.

Here favourable effect is rejection of heat.


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