I'm setting up a lampworking shop & need to ventilate it. Some folks are using 350cfm range hoods. The ventilator I like that is actually built for lampwork is 650cfm.
My son is going to build the hood-- and I have a squirrel-cage fan that I think will move a lot of air. Is there any way to guesstimate if I'm going to be in the 6-800 cfm range?
The motor is 1/6 hp, 2 speed- 1175rpm. [at fast speed?] The cage is about 4inches across and 12 inches in diameter.
The hood will be 40x24x18inches [40x24 opening]. The ductwork will probably[I'm open yo suggestions] be 5' of 10" flex for now. [3 horizontal and 2 vertical- no sharp bends]. In a fwew months we move it all and it will be rigid ductwork- 1' through a wall, then vertical to a cap.
Thanks, Jim