On board Hot Water Shower setups?

[badmix]

Well, if the tube in tube design is less effective, maybe it wont be TOO hot? Dunno. The heat exchanger I seen was basically tube in tube. The outside tube ran its fluid all the way around the outside of the inside tube and the inside tube was straight thru design. So my one question is, which inlet do you use for fresh water and which do you use for coolant? The inner tube is straight thru design, so I figure that would be for coolant? Dunno, still brain storming this. lol

 

[ryoken]

yup, interesting idea.. something I hadn't seen..

And yeah, coolant thru the straight-thru..

 

[badmix]

Well, somethings I need to figure out is the GPM (gal. per minute) rate of pumps and the size of the heat exchanger, Im sure there is a formula out there. Ill probably jus piece it together and hope for the best. lol. I can get diff. size heat exchanges and found some cheap 1.1gpm pumps.

 

[jays68yak]

Anyone know where to get one of those pumps?

 

[Russell]

Why not set the system up so your pump takes water from the source and pumps it through a y-joint, with one side going through the heat exchanger, and the other bypassing as a cold water supply, then simply put an inline valve on both lines so you can open or close each one to mix the water to a comfortable temperature in another y-joint, then have it come out of a showerhead, hose or whatever you are using it for.

Then you don't need two pumps, and you should be able to regulate the temperature fairly easily like you would in any conventional shower...

Kind of a neat idea though, esspecially when a guy is out in the bush camping for a few days -- It'd be nice to fire up the truck, drive down to the lake, drop a hose in for taking up water, then taking a nice warm shower

 

[roadnotca]

Why not set the system up so your pump takes water from the source and pumps it through a y-joint, with one side going through the heat exchanger, and the other bypassing as a cold water supply, then simply put an inline valve on both lines so you can open or close each one to mix the water to a comfortable temperature in another y-joint, then have it come out of a showerhead, hose or whatever you are using it for.

Then you don't need two pumps, and you should be able to regulate the temperature fairly easily like you would in any conventional shower...

See above.

 

[Metrodps]

mmm Coleman makes a hot water heater with pump that sells for $189.00 sounds like a lot of trouble to try to rig. But I understand why you might wanna do it.

Coleman Hot Water on Demand
Hot Water on Demand™ Portable Water Heater
- Delivers hot water anytime, anywhere (For outdoor use only)
- Instantly gives you more time to enjoy the outdoors
- Connect the hose to 5 gallon water container (included) and adjust to desired temperature. In 5 seconds, you have hot water for beverages, washing, cooking, etc.
- Water is heated by propane (not included)
- Heats 40 gallons of water on one Coleman 16.4 oz. propane bottle and a battery charge
- Pump is powered by rechargeable battery

Shipping Dimensions
Weight: 27.4 pounds.
Dimensions: 12.25" (W) x 20" (H) x 19" (D)

OR you could just use the old water bag hanging in sun type. They sell for about $10.00 Just fill it hang it in tree go wheeling and in a few hours (3) its ready.

Large 4.5 gallon shower with flexible hose and on/off shower head
Black polyethylene shower bag attracts warmth from the sun for heating water

Here is something different.
http://www.2daloo.com/camp_shower.htm

 

[B_to_C]

WTH? http://www.2daloo.com/poo_man.htm