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

Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 1 (Q.No. 8)
8.
The by-pass factor for a cooling coil
increases with increase in velocity of air passing through it
decreases with increase in velocity of air passing through it
remains unchanged with increase in velocity of air passing through it
may increase or decrease with increase in velocity of air passing through it depending upon the condition of air entering
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
19 comments Page 2 of 2.

Rajesh said:   8 years ago
Answer is correct.

Ysm said:   8 years ago
What is the significance of by-pass factor?

Ysm said:   8 years ago
The inefficiency of heating coil or cooling coil in not being able to heat or cool the incoming air to the temp of cooling coil. For proper design, bypass factor should be less.

Selvaraj said:   8 years ago
Anybody explain briefly about bypass factor.

Divyank singh said:   8 years ago
According to nptel lecture 34 of rac. It has been said that as increasing velocity will reduce the time of contact so BPF decrease.
(1)

Harinder Singh said:   7 years ago
For the cooling coil, option A is correct.

For the heating coil, option B is correct.

Shrivardhan said:   6 years ago
In both cases, cooling and heating the Bypass Factor will increase.

Bhupendra singh said:   5 years ago
By pass factor is the percentage of air travels through a coil without touching it so as velocity increases it do not have more time to be in contact with coil surface so percentage of air that is not in contact with coil surface increases means bypass factor increases.
(1)

Shiva said:   5 months ago
The bypass factor (BPF) is the fraction of air that bypasses the cooling coil without being cooled, indicating the coil's efficiency.

A lower BPF means better coil performance.


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