« previous next »

Author Question: What materials are used for refrigerant piping? What will be an ideal ... (Read 65 times)

beccaep

  • Hero Member
  • *****
  • Posts: 535
on: Jul 26, 2018
What materials are used for refrigerant piping?
 
  What will be an ideal response?

Question 2

Why are duct friction charts designed for sheet metal duct ducts not accurate for fiberglass ductboard or flexible ducts?
 
  What will be an ideal response?


ririgirl15

  • Sr. Member
  • ****
  • Posts: 385
Reply #1 on: Jul 26, 2018
Answer to Question 1

Most refrigeration lines are made of copper. Lines for ammonia systems are made of steel because ammonia chemically reacts with copper. Some systems use aluminum tubing.

Answer to Question 2

Fiberduct and flex duct have a higher friction rate than sheet metal, so sheet metal friction charts are not accurate for either fiberduct or flex duct.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Cyanide works by making the human body unable to use oxygen.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Rocks are the most common geosphere materials, and can be fun, dangerous, beauti Rocks are the most common geosphere materials, and can be fun, dangerous, beauti
Written materials can be helpful for the older adult. Written materials can be helpful for the older adult.
Four hazardous materials incidents. Clockwise from top left: a clandestine drug lab dump site, ... Four hazardous materials incidents. Clockwise from top left: a clandestine drug lab dump site, ...
Nine labels used to identify hazardous materials in the Global Harmonization System (GHS). Top row: ... Nine labels used to identify hazardous materials in the Global Harmonization System (GHS). Top row: ...
The four routes of entry into the human body for hazardous materials. The four routes of entry into the human body for hazardous materials.
A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ... A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ...
Video: Hershey Chase Experiments

For a complete list of videos, visit our video library