Copper coil water heater
Posted by Porndogingwithme@reddit | overlanding | View on Reddit | 16 comments
Fun project I've been testing. Good result for plenty hot water. Approximately 70 foot of copper tubing, wrapped on a form to make coil inside a coil to get nearly all the heat out of the burner. Nasty by product of cooling propane exaust is terrible smelling acid that burns the eyes; but some longer hoses will solve that. Still waiting on the high temp insulation. If I had some anyone want one that is a bit better looking? Stainless or titanium pipe is what I'm thinking.
elliotones@reddit
Beautiful! Reminds me of hyperspacepirate on youtube (though he generally goes in the other direction, cryogenic temperatures) and/or the Kelly Kettle
What are you planning to use all the hot water for? You can probably make quite a lot. Showers and dishes?
Porndogingwithme@reddit (OP)
Thank you! Anything I need it for. It's about a few gallons a minute. I did not want to go through a ton of water, just enough with a good nozzle. I could flow more water but I'm at the max of what this jet burner will put out. Never thought that would happen when i got it. I've turned it's flow down and cleaned off my bike chain, at about 180f, cut through pretty well. Filled buckets to wash clothes.
Working to make it more auto. Hit a button fire starts, primes pump, all ready to turn on the tap. When heat loop reaches set point, fuel cuts off. But it requires more part to be safe and constant.
It will double also as a backup heater when conbined with a pump and radiator. And it can be set on a grate and take heat from solid fuel. It's all fun haha
Accurate-Vast-1989@reddit
I was just talking to chatbot about making one with either t valve coming right off your tranny cooler or whatever and then have you could either do it where you turn it on to the loop and have it run a long hose to another condenser and just stick that condenser in like igloo cooler that would be for the water that you then eat that water with the conductor heat exchanger and then if when the water is hot you could shut the valve off and it goes back to your normal cycle or have a heat exchanger plate or right under the hood with an a loop back to the eagle cooler storage and that way you'd have hot water anytime you want just from driving a vehicle and then so you don't burn a pump if you're you'd have pressure while your motors running but to run it while you're vehicles off to have a diaphragm pump they make the food grade ones or marine ones that can handle boiling water but even if you didn't have one that handled boiling water you could have a mixing valve or temperature regulator where you could mix a cold water loop first or blow cold water in through it .
Porndogingwithme@reddit (OP)
If you used a few more periods it would hopefully make your comment understandable. Most of it make little to no sense.
All you need to take heat from a vehicle is to install a heat exchanger between the engine and radiator, then a pump. Makes it easy to do and you don't have to worry about the coolant system pressure. Just restricted to using the heat exchanger while the vehicle is running.
My idea is to have a powerful diaphragm pump that feeds pressure through the heat source into the mixer and cold water to the same mixer. So it runs like a domestic facet.
WWYDWYOWAPL@reddit
Accurate-Vast-1989@reddit
What did you use for the 300g hot tub Thermo siphon
Porndogingwithme@reddit (OP)
There are lots of options. But I want my water heater to shower with and wash my dog to fit in a 50 cal ammo can. This can also attach to a expansion tank, pump and radiator for a backup heater for my camper. That's why I wanted to make this. Can make a fire and set this above it to draw heat to keep my camper.
What do you use for the tub of the hot tub? Do you set it up next to a water source to full it?
Accurate-Vast-1989@reddit
@Whistle-blower:Petoskey Michigan illegal search and tortured me for years. https://www.tiktok.com/t/ZThUugNtV/
thetinyhammer52@reddit
Ive been working on something similar but a rocket stove
Porndogingwithme@reddit (OP)
I started similarly. But ran into problems when I was drawing to much heat from the burn causing the stove to go out. So I went for a heating coil I could put atop a variety of differnt heat sources.
thetinyhammer52@reddit
Did you put the coil in or around the stove?
Porndogingwithme@reddit (OP)
Started by wrapping, then tried hanging a coil in the chimney or exaust. Both decreased the air flow to much. The exaust did not want to go up so it sniffed out. Might work if the proportion is right either very small coil or high heat output.
joey12342323@reddit
It indeed doesn't look very aesthetic right now, but it seems pretty good. I'm looking forward to seeing the finished product. Will you install it on your camping car? And will it be detachable for easy removal?
Porndogingwithme@reddit (OP)
If I can cram it in a 50 cal ammo can that would be a nice form factor. But I want it to do many things so I'm struggling to make flexible between differnt fuels, and what the heats used for.
A swing out hitch like attachment is what I'm looking to make. But I want it to be able to be used away from the vehicle.
Porndogingwithme@reddit (OP)
What the coils inside look like. Many attempt to get it looking professional.
Porndogingwithme@reddit (OP)
Temperatures are hose input, after second heat exchanger, outlet from primary.