electric water pump Options

[beefstrudel]

My job requires me to be on the road a lot (96 7afe celica). Mostly in the winter time. You could prolly tell if you saw the interior... Mini fridge. 10 inch android tablet and mobile hotspot for internet. 1000 watt inverter. Isolated accessory battery.. I usually just put the seat back, watch netflix and sleep in the car. If I shut the car off I only have heat for a few minutes obviously, and I dont want to leave it running because of exhaust... I want to install a little water pump on the heater hose or radiator hose depending on how the flow should work. Could anyone recommend a pump? And where should I install it? This will only be ran when the engine is off.. Sorry for the strange question but google turned up nothing.

[Bitter]

You won't get much heat for very long, the engine cools down pretty fast. Maybe 20-30 minutes before you'd have cooled the engine block down to a lower temp than you'd want the cabin at, then it will begin to pull heat from the cabin to warm the block, especially in the winter. Remember that you're not just dumping heat via the heater core, the whole engine block is radiating heat and the radiator is thermo-siphoning and self cooling as well. You'd be better off insulating the car really well and using some thermal mass and a small fan. You could run a copper coil with hot coolant into a large bucket (T off the heater hoses) and heat that water while the car is driving and then you'd have a mass of heat in the cabin when the car is off. You would need a metal pipe down the center of the bucket vertically and a small fan at the top moving air at low speed to draw the heat out at a steady rate into the cabin, but you'd not have to worry about pulling cabin heat into the engine block.


Realistically, get a little generator, pipe the exhaust outside, and use it to run a heater or something. Also, insulation will go the farthest. Get some stick on aluminum backed foam and cover the roof of the car, cover the door skins, cover everything you can, make some little curtains for the windows you can stick up. The glass is where you're loosing the most heat from, just a layer of fabric will stop a lot of heat loss.

http://www.homedepot.com/p/Frost-King-E-O-...FV516/100028603
That stuff is great, and it dampens sounds as well so it'll be a quieter car, it weighs next to nothing too.