HELP THE COLEMAN VETERANS MEMORIAL
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I was a dealer for the OWB units before gassification concepts entered the picture, but I can answer some of those questions. If by a thermal tank you mean a large reservoir for the heating water, the answer is no, the heating units outdoors have plenty of water to store the heat. Then the hot water from the OWB in your case will just put heat into your heating system inside. It will be connected in series so you will have an either or choice on any given day. If you are asking about an insulated tank in the home for domestic hot water, while not absolutely necessary, it is far better to have one. Without one you would need to wait a very long time to get hot water to wash your hands or whatever and when the hot arrived it may well be hot enough to scald you. Most tie into a water heater tank, so the hot water coming from the OWB heats the contents of the inside water heater every time you draw hot water. Then, some people add a tempering (or mixing) valve to regulate the domestic hot water temperature, most don't use one.I can't give you even a ball park price for 2 reasons. First I've been retired from that for 19 years, and secondly there are too many variables. Even back when I was in the business I could never give a price without a site visit. Check out 3 dealers on competitive currently approved units. Estimates were always free back when I did them.While pipes are there from an old system, you may not want to use the old ones. Technology for the piping has changed in a big way. Years ago we had to field assemble the pipes and put foam insulation around them, then try to seal all of the seams. Then we had to pull the pipes into a corrogated tile. Most times that went OK but sometimes the seal would get damaged and there would be some heat loss. Now manufacturers of the piping insulate the pipes holding the pipes exactly the way that makes for best heating efficiency and there are no seams to fail, plus the insulation is thicker than what was used so many years ago. Today's pipe assemblies are far more efficient (less heat loss). Study the technical specs of all of the units you get prices on and often the lowest price is not your best buy. The wood is far better if properly seasoned but the units can and will burn less than perfect wood. Wood is never 100% dry, most is considered seasoned properly if the moisture content is under 20%. Many woods are properly dry if split and stacked where it gets good air circulation but is protected from the rain if it has aged 6 months, some do far better after 2 years. Read up on drying firewood and look at the different species in relation to drying time. Oak for example will burn after 6 months but gives far more heat after 2 years, split and stacked, there are others in that same camp.Good luck!Dave
We have a Garn 1500, it saved us 6 cord the first year we used it. We heat home (1500 sq ft, shop another 1500 sq ft green house 10 x 32 March- May, and our domestic water) from Oct. to May. We use 12 - 15 cord of Aspen,Balsam, and Alder bushes. If we had good hard wood it would be a few cord less.
has anyone used coal in an OWB?
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