« previous next »

Author Question: Why are the dampers on registers normally not used for balancing the system airflow? What will be ... (Read 55 times)

Mollykgkg

  • Hero Member
  • *****
  • Posts: 529
on: Jul 26, 2018
Why are the dampers on registers normally not used for balancing the system airflow?
 
  What will be an ideal response?

Question 2

Why is it important to fill the brazed copper joint completley when R410A refrigerants are used?
 
  What will be an ideal response?


tennis14576

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 26, 2018
Answer to Question 1

If supply registers are used as balancing dampers they will produce excessive noise in the space.

Answer to Question 2

These higher-pressure refrigerants will cause the copper pipe to expand slightly as the pressure inside the pipe increases. As the pressure decreases, the pipe contracts. This cyclical expansion can cause a stress fracture if the joint is not completely filled with brazed metal.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

The mammalian respiratory system. The mammalian respiratory system.
Receptors in the autonomic nervous system: (a) sympathetic division; (b) parasympathetic division Receptors in the autonomic nervous system: (a) sympathetic division; (b) parasympathetic division
Modification of neural transmission in the central nervous system: (a) normal transmission; (b) ... Modification of neural transmission in the central nervous system: (a) normal transmission; (b) ...
The Male Reproductive System The Male Reproductive System
Male Reproductive System - Semen Male Reproductive System - Semen
The two circuits of the human cardiovascular system The two circuits of the human cardiovascular system
Video: Electrical Conduction System of the Heart

For a complete list of videos, visit our video library