POCKET REFERENCE GUIDE — 24
Fan Law 3
A fan is running at 15,800 CFM using 6.3
BHP. If the CFM is increased to 20,000
CFM, what is the new BHP?
KEYSTROKE DISPLAY
o o 0.
1. Enter current CFM into “a” old:
1 5 8 0 0 Ç 4
A STORED 15800.
2. Enter new CFM into “a-new”:
2 0 0 0 0 Ç 7
A
n STORED 20000.
3. Enter current BHP into “b” old:
6 • 3 Ç 5 B STORED 6.3
4. Calculate new BHP or “b-new”:
Ç d BHPn FAN LAW 3 12.77789
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