Ventilation

Question 1

What is the density of standard air?

Answer 1

0.075 lbs./ft3

Question 2

This is the pressure exerted in all directions by a fluid.

Answer 2

Static Pressure

Question 3

How would you orient a manometer in a duct if you wished to measure velocity pressure?

Answer 3

Parallel to the direction of flow and in an upstream direction

Question 4

What is Total Pressure equal to?

Answer 4

Total Pressure = Static Pressure + Velocity Pressure

Question 5

What are 3 general categories of hoods?

Answer 5

Enclosing Hood
Capturing Hood
Receiving Hood

Question 6

Transport velocity (inside duct) for vapors, gases, and smoke? Looking for a range (in feet per minute)

Answer 6

1,000 - 2,000

Question 7

Name the 2 most common types of fans?

Answer 7

Axial & Centrifugal

Question 8

True or False

Axial fans are best suited for high volume low pressure applications for clean or relatively clean air?

Answer 8

True

Examples: spray booth, process cooling, personnel cooling, heat removal, make-up air