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General Outdoor Furnace Discussion / Re: Need Help
« on: January 18, 2011, 10:23:52 PM »
I have a 3000 sq ft house split into two levels. The line from the OWB comes into my crawl space goes to my domestic hot water tank where there is a water to water heat transfer loop and then it cycles back to the stove. This forms the primary loop in the system and runs constantly. Off that are two loops that heat half the house each that run off the primary loop and are controled by thermastats that run values that open and close thus contoling hot water flow. The heat is taken off via modern hot water base board rads. There is a further loop that does the upstairs. Heat rises thus requiring less rads. The system keeps the house uniformally heated on even the coldest nights. I use a one inch line from the stove. Youd don't need a large flow. In fact for heating purposes you don't want the water to move too quickly, giving it time to give off some of its heat to the rads. You do need to insulate your lines in the ground otherwise you end up heating the earth. I put the rads in after the house had been constructed. It required some uncomfortable work, but was possible and I have really enjoyed the hot water heat. I am not sure how you currently move your heat within your home, you may be able to tie into that system which is already in place.
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General Outdoor Furnace Discussion / Re: tell me what you think about this idea
« on: January 15, 2011, 10:03:45 PM »
Sand isn't the best material to transfer heat, but has been used in the past. I don't think that it needs to be pressurized, but you will need a storage tank for the hot water or it will boil out on you from the copper tubes. This way you remove the reservoir from the heat source making repairs easier. The old timers use to use copper tubing to provide hot water before the electic, or gas hot water tank. Sounds like a workable idea to me.
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