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Solar hood?


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Old 04-12-2008, 03:35 PM
lyekka lyekka is offline
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Join Date: Mar 2008
Vehicles: 2008 Toyota Prius
Posts: 158
Re: Solar hood?

Thanks for the feedback! I use a block heater at home, but was trying to find a cost effective way to preheat coolant at work and on the go. I ruled out solar panels to run the block heater due to panel cost and battery/inverter issues among other things.
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Old 04-12-2008, 03:47 PM
lyekka lyekka is offline
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Vehicles: 2008 Toyota Prius
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Re: Solar hood?

Originally Posted by PaleMelanesian View Post
What about a black hood, with copper pipe running back and forth, also painted black (maybe on the underside?). Feed the loop of piping through the cooling system. It'll preheat the coolant.
Andrew, I like the idea! I'm sitting here looking at a flexible heating pad with loops embedded in it and wonder if something similar could be made to carry coolant:

A roll up black mat with insulation on the underside to protect the car (perhaps also it could cover the windshield / roof to keep the interior cool?), liquid tube loops with quick disconnects to the engine's coolant system, and a flexible solar panel attached to drive a pump. A quick search found a 12v pump rated at 600 LPH that only uses 18 watts.


Not much weight involved except for the coolant?

Justin, any comments as you are familiar with solar water heating? I have no idea of what quantity of coolant in the loops would need to be, or the velocity of the coolant to give it time to pick up the heat.
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