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Author Question: What is the airflow through a register with a free area of 72 square inches if the air velocity is ... (Read 113 times)

Lisaclaire

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on: Jul 26, 2018
What is the airflow through a register with a free area of 72 square inches if the air velocity is 300 feet per minute?
 
  What will be an ideal response?

Question 2

What are grains and what air property is measured in grains?
 
  What will be an ideal response?


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Kingjoffery

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Reply #1 on: Jul 26, 2018
Answer to Question 1

72/144 = 0.5 ft2 0.5ft2 x 300 ft/min = 150 CFM

Answer to Question 2

A grain is a small measurement of weight. 7000 grains = 1 pound. Grains are used to measure the amount of water in the air. This is called the specific humidity.


Lisaclaire

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Reply #2 on: Jul 26, 2018
TY


Kingjoffery

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Reply #3 on: Jul 26, 2018
You're welcome


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