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Date:         Tue, 10 Jan 1995 11:39:02 -0800 (PST)
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         Alistair Bell <ui775@freenet.victoria.bc.ca>
Subject:      Re: Speaking of heater fans...

On Mon, 9 Jan 1995, William R. Kennedy, NJIT CIAT, 201-596-5648@lenti.med.umn.edu wrote:

> Alistair Bell mentions that an inline fan can impede airflow if the fan is > off. On of the advantages of the JCWhitney fan for Vgons is that there is > little of this effect. The fan is centered in the duct, and the fan's > housing is at least the diameter of the rest of the duct, and the air does > not have to turn a corner as it would with a squirrel cage. I wouldn't want > to have to run the fan all the time, and I don't. Not that a Vgon is quiet > enough at 70+ so you'd NOTICE one extra fan. > B.

I didn't use a squirrel cage fan, but a "turbine" fan from a gas heater. The air flow is straight through, and I guess the fan blade did freewheel with the stock air flow, but I do beleive it impeded the flow. Don't get me wrong, I think the inline blower is a great idea, I just didn't carry it through to the end, ie. external mounting, insulation, proper rheostat control. I still have the blower if anybody is interested.

Alistair


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