Lecture Notes #10 Flashcards
(5 cards)
1
Q
What’s the definition of a “Fan”?
A
a fan is a machine which propels air continuously by aerodynamic action
2
Q
What are the 3 basic types of fans used in HVAC design?
A
- radial blade 2. forward curve blade 3. backward curve blade
3
Q
Does a “Forward Curve Blade” provide more or less CFM? why?
A
more CFM. this is due to the shape and quantity of blades.
4
Q
Which of the 3 types of fans is a “non-overloading” fan?
A
Backward Curve blade fan
5
Q
What’s a relationship between backward fan curve incline blade types and efficiency?
A
the more curved the blade cross section, the more efficient. it also becomes more expensive the more curved it gets.
