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interior vehicle cooling by solar?


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trae08 
Member - Posts: 41
Member spacespace
Joined: October 27, 2006
Location: United States
Posted: July 05, 2011 at 7:14 PM / IP Logged  
during the day the inside of my truck gets extremely hot. What i want to do is lay a small solar panel in the bed and somehow rig a small fan to ventilate the air inside.
I dont have a sun roof. my question is do you guys have any ideas of how i could set this up?
lspker 
Silver - Posts: 503
Silver spacespace
Joined: November 23, 2003
Location: Canada
Posted: July 05, 2011 at 8:00 PM / IP Logged  
You can buy the premade vent shade.......it attaches to a slightly open window and blows air in or out powered by a solar pannel.  Seen some in the $20-30 range, make your own......
oldspark 
Gold - Posts: 4,913
Gold spacespace
Joined: November 03, 2008
Location: Australia
Posted: July 06, 2011 at 4:40 AM / IP Logged  
I bought one of those years ago - a throwout special for $5.
I thought they were a bit of a wink, but one of the first times I used it, I swore I had air-con!
These days I'd probably mount fans in two vents I have and simply power off the battery (vents intake at the front; PC fans to push into the cabin; with timer else simple (klixon) temp control).
Solar is still $3 per Watt for large panels, otherwise over ~$20 for enough to power the fans(s). I'd mount that horizontally on the roof or bonnet....
And yeah - I'd leave a gap in the windows. Otherwise mount an extractor fan in the roof.
racerjames76 
Silver - Posts: 581
Silver spacespace
Joined: November 22, 2008
Location: Ohio, United States
Posted: July 08, 2011 at 12:16 PM / IP Logged  

I had thought about doing this too, since most trucks have vents on the back wall of the cab. It would't be hard to mount a few pc fans back there. I wanted to rig some kind of retractable panel, or quick mount system that stuck up over the forward bulkhead of the bed. The solar panel would hang over into the bed when in use, and either quickly release, or retract into the gap between the bed and cab. I would put in an ignition relay that stops the fans when the truck is running also.

You would just vent the windows, hop out and either snap on the panel, or pull it from its storage area, and the fans would push the hot air out, pulling cooler air in through the vented windows.

I never got around to finding a panel. If you do let us know!

To master and control electricity is perfection. *evil laugh*
trae08 
Member - Posts: 41
Member spacespace
Joined: October 27, 2006
Location: United States
Posted: July 08, 2011 at 6:51 PM / IP Logged  
yea i was thinking the same thing about the pc fans in the back window.
would a pc fan kill the battery in a 10 hr period?
racerjames76 
Silver - Posts: 581
Silver spacespace
Joined: November 22, 2008
Location: Ohio, United States
Posted: July 13, 2011 at 1:29 PM / IP Logged  
Well another, possible easier solution is a solar battery charger, and just running the fans off the battery.
To master and control electricity is perfection. *evil laugh*
oldspark 
Gold - Posts: 4,913
Gold spacespace
Joined: November 03, 2008
Location: Australia
Posted: July 14, 2011 at 5:27 AM / IP Logged  
Hence the original idea - a solar cell (charger) to power the fans direct.
Hence no risk flattening the battery.

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