converting CFM to HP

Anita · Jan 22, 2011

how do you convert the airflow in CFM to HP? is that possible??
and also how to calculate the load on the motor (KVA) of a air curtain if all the information given was:

Product Type: Unheated Air Curtain
Energy Source: Electric
Voltage: 115 Volts 1 Phase 60 Hertz
Airflow: 795 CFM
Dimensions: 9.5"H x 36"W x 8.5"D
Weight: 24 Pounds

anita

telectrix · Jan 22, 2011

surely the rating of the motor will be on it's rating plate, either in amps or kw. but as itsounds like it's american, who knows?

Anita · Jan 22, 2011

check out the specs

telectrix · Jan 22, 2011

if you mean the unheated 115 v the current is given so you can calculate the kw P=IV , 115 x 1.2= 138 watts, or 0.138kw

Anita · Jan 22, 2011

hmm...ok ok.....so there is no need to take into consideration root 3....because its a single phase system right...?...

telectrix · Jan 22, 2011

correct. the only consideration is that the KVA will be higher than the KW, due to power factor, but not much.if you allow a pf of 0.8, so kva=kw/0.8 = 138/0.8=172.