|Re: Re: heating ideas||<– Date –> <– Thread –>|
|From: tom ponessa (tom_ponessatvo.org)|
|Date: Tue, 31 Jan 95 09:11 CST|
Re: Graham Meltzer's reply to Heating ideas These are also known as masonry heaters or Russian heaters. There are commercial models (Tempcast, Envirotech etc see ads in Fine Homebuilding) as well as those built by masons. Tempcast starts at about $3000 or so (U.S. which means $7,834,000 Canadian). This doesn't include the exterior masonry finish (required).There have been articles inFine Homebuilding about custom made models (Dec '91, Aug '92). They burn the wood then burn the gasses in a secondary combustion chamber above the wood. Then the hot residue is routed up and down a few times before going up the chimney. This activity extracts the heat which is held in the masonry (or soapstone in one case). Tempcast claims better than 90% efficiency and particulate emmission of less than 1 gram/hour in some cases. These things can also burn softwood and produce negligable creosote. So if you find discarded wood pallets your heat is free. However I have reservations about the warehouse. If you have one heater and people have there own rooms, doors need to be left open for the heat to radiate in. By its nature it must be centrally located in the building. It is heavy and the floor may need reinfocing. The roof will have to be pierced for the chimney. Codes may require an external air supply (there could be backdrafting and pollution of the interior space without it). I wouldn't construct a firebox with anything other than new firebrick and code may require it. Finally, I suspect the cost will be not so cheap and if it is custom you MUST find someone who knows how to do it. Someone with references and a track record. The potential for disaster is too great otherwise. I think masonry heaters are the best solution ecologically and in terms of energy efficiency (after 100% solar). I plan to have one in my house if and when I build it. I think they are ideal for a new project. For a retrofit it may not be so simple to recommend.. The number and type of windows is a big factor- are they single or double glazed? If Jerry Jameson can give us some more detail about the living arrangements and the building it would help
RE: heating ideas Graham Meltzer, January 30 1995
- Re: Re: heating ideas tom ponessa, January 31 1995
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