I would never say...
We use our sink like RD (sink drain board), but also temp store purchases / dishes / hands / hair / etc. But we don't have a shower.We love our IKEA sink with the drain board. It serves many functions including a good place to put our butane stove, store purchased items temporarily, dishes, wash up our hands, our hair, and store wet stuff. Of course we managed to put a 54” wide bed, a porta pottee, a dinette to seat two, the galley with the sink, video, seating for six when we need it and it is all in a 136” van. The answer is to plan well and have it all.
At the moment, I'm leaning toward one of the engine coolant heaters, like the Isotemp.You are putting in a shower so a sink is a hot & cold line & drain, as I believe everything else is there for your shower (unless you are doing on of those portable propane showers?)
How hot does your exhaust pipe get? Maybe around the cat instead? The easiest way is most likely just a plain old heat exchanger in conjunction with the vans cooling system.Has any ever seen/heard of or tried using a small, low flow recirculation pump and some copper tubing coiled around the exhaust pipe?
I would be worried about the water boiling in the coil, making steam and pressure. There is an upper limit on engine coolant temperature--uncomfortably close to boiling--but it should still be below boiling. The exhaust, on the other hand, can reach very high temperatures. It would not be good to have steam and pressure in a homemade hot water system.Not sure how hot the exhaust gets.
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Just wondering if anyone has ever tried coiling 3/8" copper tube around a foot or 2 of the exhaust pipe.
Thanks BaxsieI would be worried about the water boiling in the coil, making steam and pressure. There is an upper limit on engine coolant temperature--uncomfortably close to boiling--but it should still be below boiling. The exhaust, on the other hand, can reach very high temperatures. It would not be good to have steam and pressure in a homemade hot water system.
The Dometic water heater I looked at that had engine heat boost used a 6" section of 5/8 pipe brazed to the back of the tank. So I think if you took a metal water tank of some kind, wrapped it with a coil or two of tubing, then insulated the whole mess you would be good. You then need a mixing valve. And you have to worry if the chemistry of the tubing you chose is compatible with the coolant and other engine parts.
On the other hand, IsoTherm has been doing this for a long time . . . . so they might know a thing or two about construction and safety.
We ended up deciding to try this (affiliate link):
I think MsNomer is right here.What??