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

Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 7 (Q.No. 3)
3.
The most commonly used method for the design of duct size is the
velocity reduction method
equal friction method
static regain method
dual or double method
Explanation:
No answer description is available. Let's discuss.
Discussion:
20 comments Page 1 of 2.

Vinay BEL said:   4 years ago
Equal friction method should be right one.

Nithin John simon said:   4 years ago
Velocity, equal friction, and static regain are all commonly used methods, but the most simple one among them is velocity method only.

Shrivardhan said:   5 years ago
Equal friction method is right answer.

Reference - lesson 38 of nptel R & AC subject.

Tony stark said:   5 years ago
For ducts total pressure (To) = PS + PV.
Where, ps= static pressure.
Pv= velocity pressure, so answer C is right.

Bmsce said:   5 years ago
Equal friction method is the correct answer.

Static regain method is not suitable for long ducts.

Naresh said:   5 years ago
B is the Correct answer.

Anilreddy said:   6 years ago
Given answer option C is right.

Ref: R S KURMI.

Dhaval Chaudhary said:   6 years ago
The Answer A is correct by R.K Jain.

Ash said:   6 years ago
It's equal friction method.

Akshay Nandwanshi said:   6 years ago
Yes, Equal friction method is the right answer.