Teardrops n Tiny Travel Trailers

Well decided to do some testing tonight, coiled up som 3/8 copper refridgerant tubing using a piece of 3"ABS, about 25 feet I had kickin around.



Cut a 4 1/2 inch hole in botton of plastic pail then mounted the 120 mm computer fan



Drilled two holes to pass the ends of the copper through the bottom of a plastic waste basket.
Put some rubber tubing and fittings to hook up to laundry tap.

Powered up the fan with a power pack and hooked the rig to the tap and turned on the hot water



Had hot air blowing within a minute. Don't have a thermometer here but felt like it was around 80 - 90 degrees.
Nice and quiet.

Then I shut off the hot and turned on the cold water, nice chilly air in a matter of a minute or two.



So I think I'm going to go ahead and source a heater core for a car and a 12 volt circulation pump, don't think a Shur flo can handle hot water, and they're noisy anyhow.
This should give me a cheap heat source, seeing as I have hot water on board, and with a couple of extra valves drawing and retuning to the fresh water tank, I'll have cheep air cooler also
A thermostat and selonoid should be able to control the pump and fan easily

Chris,
I pump hot (not boiling) water in my home brewery with this. It has lasted 20+ years.

http://www.grainger.com/Grainger/DAYTON ... Pid=search

It's not self priming, and it will cavitate like crazy if the water is boiling or close to it (190F+), but it's affordable, durable, and available.


<Chas>

Thanks, I'll look into something like that, shouldn't be over 140 degrees, if I have it even that hot, as solar circulation pumps are pricey

shurflows are used for showers in RVs, and your system isn.t much different excpet that you push the. water back to the tank nstead of to the drain. i suggest a solenoid valve and a thermostat to make sure you are getting max heat from the water and not just warming your water tank.
Tom

Socal Tom wrote:shurflows are used for showers in RVs, Tom

The shur flow is pumping cold though, preasurizing the hot water. May test it cause I have a spare though

Martiangod wrote:

Socal Tom wrote:shurflows are used for showers in RVs, Tom

The shur flow is pumping cold though, preasurizing the hot water. May test it cause I have a spare though

I thought that is what you were doing, pressurizing the hot water tank with cold water, then letting is push through the heater...?
Tom

PrincessAuto.com has cores and pumps. Depending on elevation of various component of the system, you may require a pump with head capability,