This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Why do fiberglass ductboard and flex duct have higher friction loss rates than sheet metal? What ... (Read 135 times)

WhattoUnderstand

  • Hero Member
  • *****
  • Posts: 517
on: Jul 26, 2018
Why do fiberglass ductboard and flex duct have higher friction loss rates than sheet metal?
 
  What will be an ideal response?

Question 2

Why should PVC pipe be cut with a plastic tubing shear instead of a hacksaw?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

vish98

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 26, 2018
Answer to Question 1

Fiberduct and flex duct are not as smooth and even on the inside, so they have higher resistance to airflow.

Answer to Question 2

The shear is preferable because it produces a clean, square cut with no chips, shavings, or burrs.


WhattoUnderstand

  • Member
  • Posts: 517
Reply 2 on: Jul 26, 2018
YES! Correct, THANKS for helping me on my review

frankwu0507

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

A Mass-Loss Star A Mass-Loss Star
Osmosis: Water moves from an area of low solute concentration to an area of higher solute ... Osmosis: Water moves from an area of low solute concentration to an area of higher solute ...
Age-standardized disability-adjusted life year (DALY) rates from hepatitis B by country (per 100 000 ... Age-standardized disability-adjusted life year (DALY) rates from hepatitis B by country (per 100 000 ...
Although the highest rates of disordered eating patterns occur among females, males are not immune Although the highest rates of disordered eating patterns occur among females, males are not immune
How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree? How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree?
Vision Loss Due to Macular Degeneration Vision Loss Due to Macular Degeneration
Video: Heart Chambers

For a complete list of videos, visit our video library