On 12/12/05, Mike Weaver <[EMAIL PROTECTED]> wrote: > > How many btu's is a standard furnace for a 2,500 sq foot house?
Depends on whether it's well insulated, insulated to code, or not insulated, what the design heating temperature is, whether it has any passive solar features, and if so, how much thermal mass it has. I'd say somewhere between 200,000 Btu and 20,000 Btu. > I looked into the Tarm but don't want to spend the money. I need to > heat about 1,800 square feet in the Mid-Altantic. Currently I use a > VC Resolute, and so far my problem is more too much heat that not > enough, though not always in the right spots in the house. I use fans > to move the air around. > I am looking at the OM22 OilMiser as it is supposed to be able to burn > BD, though anecdotally I've heard it needs a touch of Kerosene or HHO 1 > to stay happy. > It's also apparantly very sensitive to fuel quality. > > If I were building a new house I would either adapt an oil furnace for > BD or look into either the Tarm or a wood boiler. > > How many btu's is a standard furnace for a 2,500 sq foot house? > > -Mike > > Appal Energy wrote: > > >Or... > > > >http://www.alternateheatingsystems.com/woodboilers.htm > > > > > > > >>And on a smaller sale... > >>has anyone ever looked into these: > >>http://www.woodboilers.com/wood-gasification.asp ? > >> > >>More to the point, has anyone ever tried BD in one of thse? > >>http://www.woodboilers.com/multi-fuel-furnace.asp > >> > >>-Mike > >> > >>Keith Addison wrote: > >> > >> > >> > >> > >> > >>>http://www1.timesofindia.indiatimes.com/articleshow/1267007.cms > >>> > >>>THE TIMES OF INDIA > >>>EDITORIAL > >>> > >>>Realising Gandhi's village ideal > >>> > >>>Anil K Rajvanshi, Ph.D. > >>>Director > >>>Nimbkar Agricultural Research Institute (NARI) > >>>Phaltan-Lonand Road, Tambmal, > >>>P.O.Box 44, Phaltan - 415523 > >>>Maharashtra, India > >>> > >>>Ph: 91-2166-222396 > >>>Fax: 91-2166-220945 > >>>E-mails: <mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED] > >>> <mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED] > >>>http://nariphaltan.virtualave.net > >>>http://www.nariphaltan.org > >>> > >>>October 19, 2005. > >>> > >>>This is the Age of Electricity. Yet, 55-60 per cent of rural India > >>>has no electricity; drinking water supply is poor and a majority of > >>>rural population uses 180 million tons of biomass every year as fuel > >>>for cooking using primitive, inefficient and smoky chulhas. > >>> > >>>Rural India hasn't really changed much since Mahatma Gandhi's time. > >>>Villages can easily get electrified if modern hi-technology > >>>synergises with locally available resources. Biomass is an abundantly > >>>available local resource, obtained from agricultural residues. > >>> > >>>The 600 million tons of agricultural residues India generates every > >>>year can theoretically produce 70,000 MW of electric power. A hi-tech > >>>biogas producer can generate biogas with energy of about 13 MJ per kg > >>>of biomass, which is similar to that produced by burning these > >>>residues in a power plant. > >>> > >>>Freshly harvested biomass contains about 50 per cent moisture. For > >>>using it in power plants or gasifiers one has to reduce the moisture > >>>content to about 10-15 per cent. Drying biomass requires energy. The > >>>freshly harvested biomass can be directly fed into biogas reactors to > >>>produce gas, saving considerable amount of energy and time. > >>> > >>>Besides, the slurry produces excellent fertiliser and soil > >>>conditioner. For a biogas economy to succeed, it needs efficient > >>>biogas producers. > >>> > >>>At present, biogas is produced inefficiently in fixed and floating > >>>dome systems, requiring considerable amount of cowdung and other > >>>nitrogenous material. It is not suitable for a household with less > >>>than three to four cattle. > >>> > >>>Then there are problems of gas production during winter and improper > >>>mixing of inputs like biomass, night soil and cowdung. Biogas > >>>reactors should be so designed that the production/unit of biomass > >>>inputs is maximised. > >>> > >>>This can be done by properly maintaining pH of the slurry, > >>>temperature and other biochemical indicators. Use of genetically > >>>engineered microbes can also increase gas production efficiency. > >>> > >>>A village-level microutility company can be set up in rural areas > >>>which will buy locally available raw materials like cowdung and > >>>biomass, and use them in these reactors for power generation and > >>>supply the gas for cooking and other purposes. > >>> > >>>Europe has an installed electric generating capacity of about 2,500 > >>>MW from biogas alone. Besides there are reports that cars and buses > >>>are running on compressed biogas. > >>> > >>>The raw gas, which is a mixture of methane and carbon dioxide, is > >>>scrubbed to remove carbon dioxide and the resulting methane is > >>>compressed for use in automotive applications. In Sweden, an > >>>experimental train is being run on compressed biogas. > >>> > >>>In India, extra biogas can be used for running modified autorickshaws > >>>and two-wheelers. Biogas-powered diesel gensets can also produce > >>>clean drinking water as a by-product. The strategy of using locally > >>>available agricultural residues-based biogas gensets will produce > >>>electric power, excellent fertiliser and clean drinking water for the > >>>village. > >>> > >>>Besides the excess biogas can also be used to provide clean cooking > >>>fuel. A village-level utility company can set up a 500 kW biogas > >>>powered diesel genset which can supply enough electricity for an > >>>average village with a population of 2,000-3,000. > >>> > >>>The high temperature exhaust gases from these plants can distil or > >>>boil water via a suitably designed unit, which can be attached to the > >>>genset. > >>> > >>>A 500 kW power plant can produce about 100,000 litres of clean > >>>drinking water every day. In producing both electricity and clean > >>>water, the power plant efficiency will jump from the 35 per cent to > >>>around 65 per cent. > >>> > >>>The microutility company could own the plant, whose shares in turn > >>>could be owned by villagers, and be managed professionally, without > >>>the political pitfalls of a cooperative society. > >>> > >>>The microutility could also lease village-level transmission lines > >>>and infrastructure from the local State Electricity Boards (SEBs) at > >>>a social cost, based on the cost of electricity most SEBs charge > >>>farmers. > >>> > >>>A national biogas technology mission should be set up to help > >>>research institutes do R&D for hi-tech biogas reactors, provide soft > >>>loans for entrepreneurs to set up such microutilities and to > >>>encourage government, corporate sector and NGO partnership in this > >>>area. > >>> > >>>The writer is director, Nimbkar Agricultural Research Institute, > >>>Maharashtra . > >>> > >>> > >>> > >>> > >>> > > > > > >_______________________________________________ > >Biofuel mailing list > >Biofuel@sustainablelists.org > >http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > > >Biofuel at Journey to Forever: > >http://journeytoforever.org/biofuel.html > > > >Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): > >http://www.mail-archive.com/biofuel@sustainablelists.org/ > > > > > > > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
