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 129 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
Wow, this really help

cassie_ragen

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Neurological Flow Sheet, Including Glasgow Coma Scale Neurological Flow Sheet, Including Glasgow Coma Scale
Circular friction over attachments at knee. Apply with fingertips or palms. Circular friction over attachments at knee. Apply with fingertips or palms.
Major causes of biodiversity loss Major causes of biodiversity loss
Percentage of higher-income Canadian households Percentage of higher-income Canadian households
Parents who have higher levels of education encourage their children to be educated Parents who have higher levels of education encourage their children to be educated
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?
Video: Mechanisms of capillary exchange (transcytosis & bulk flow)

For a complete list of videos, visit our video library