Hydronic Heater

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Hydronic Heater

Postby Martiangod » Tue Mar 27, 2012 8:58 pm

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.

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

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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

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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.

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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
If it ain't broke, fix it till it is

Chris

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Re: Hydronic Heater

Postby GuitarPhotog » Tue Mar 27, 2012 9:27 pm

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.

:beer:
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Re: Hydronic Heater

Postby Martiangod » Tue Mar 27, 2012 9:54 pm

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
If it ain't broke, fix it till it is

Chris

Deep in the Heart of Nowhere
The topper viewtopic.php?f=50&t=58140, gone to a new home to be converted
into an ice fishing shack...FREEBIE !!! for a nice young family
The trailer viewtopic.php?f=50&t=48156
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Re: Hydronic Heater

Postby Socal Tom » Wed Mar 28, 2012 7:20 am

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.
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Re: Hydronic Heater

Postby Martiangod » Wed Mar 28, 2012 7:25 am

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 :twisted:
If it ain't broke, fix it till it is

Chris

Deep in the Heart of Nowhere
The topper viewtopic.php?f=50&t=58140, gone to a new home to be converted
into an ice fishing shack...FREEBIE !!! for a nice young family
The trailer viewtopic.php?f=50&t=48156
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Re: Hydronic Heater

Postby Socal Tom » Wed Mar 28, 2012 11:22 am

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 :twisted:

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

Postby Mikka » Wed Mar 28, 2012 11:41 am

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