Fan-tastic vent in the window?

[yfarm]

I think the radiator fan is a great idea, is thin and you could get size almost matching the size of the window. They come shrouded and with a thermocouple just set and forget.

[zuren]

Originally Posted by etbadger

I think I have some pictures somewhere and will try to get it written up soon. We used this all the past summer and it has been working well. Previously we had a big muffin fan that we would put in a window, but this is much less hassle.

-e

What size muffin fan were you using? Since you mentioned it in this thread, I'm now considering a muffin fan or 2 as an option with a controller.

maybe a fan like one of the larger ones offered here:
http://www.sofasco.com/dcaxial.html?tsi ... 4AodU28vVQ

...coupled to a controller like this:
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 97.c0.m619

It looks like some of the largest they make is 5". Are there larger out there? One thing I'm noting is the decibel level of the fans. I'm assuming that these fans are ordinarily on or off, so the addition of the controller will reduce those numbers since you can force the fan to operate at a slower speed.

I still like the idea of using the my rear onboard fan but from the sounds of it, if I install the motor control but mount it in the "house" area of the van, I'll lose control from the front (which I do not want). The other thing I was thinking is that the onboard fan intake is in the van at floor level. It will only be moving air inside the van, not helping to exchange it. Maybe a muffin fan in the window will be solution I wanted.

Would the motor control I posted handle a small radiator fan? The only issue I'm seeing with radiator fans is that their amp draw is quite high:

Fantastic Fan 6000RBTA - 1.86 (low)-3 (high) amps, 920 cfm
http://www.fantasticvent.com/products/m ... _6000.html

Flex-a-lite 106 radiator fan (7.25" - smallest, lowest amp unit they have) - 4 amps - 340 cfm
http://www.flex-a-lite.com/auto/html/electric-fans.html

5" muffin fan, high-output - 2.8 amps - 222 cfm
http://www.sofasco.com/products/dc_axial/d12738.html

[etbadger]

Originally Posted by zuren

What size muffin fan were you using? Since you mentioned it in this thread, I'm now considering a muffin fan or 2 as an option with a controller.

Ours is a 10" 24volt muffin fan that I found in a surplus catalog a while back. I think it was from a computer rack of some sort. We power it off of a 12v cigarette plug voltage converter that can do 0-12v. At 12v it is starting to make a bit of noise but really moves the air through the van.

-e