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The old farmers' rule of thumb is that you can harvest a cord of wood per acre per year. (For everyone not in the US, a cord is a unit of measure equivalent to 128 cubic feet of tightly stacked firewood, or 3.625 m3. An acre is about 0.4 hectares. So the rule of thumb corresponds to about 9m3/hectare.) (For anyone questioning the validity of this estimate, ...


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It can be possible using drying piece of sample wood, Dry pieces of wood in the oven or in another way . Make sure that pieces should be well cut. Logs have varying moisture contents, depending on tree age, time since felling and position in the seasoning pile. The moisture content also varies from the middle of the log to the ends. You should use 3 to 5 ...


10

While wood-burning fireplaces have a shorter carbon cycle than coal and gas derived heating and help you to get off-the-grid, they are in no way "clean". The pollution emitted from a domestic fireplace is much worse than the equivalent pollution emitted from dedicated power generation plant for the same amount of heating. The pollution is also local to ...


10

Yes you can store it outside. That said, your practice is less than optimal. KD wood is normally dried to something like 12% moisture content. Air dried wood will eventually reach a level between 15 and 20% depending on how humid your climate is. The 12% figure corresponds to the equilibrium moisture level of wood used in a house assuming the house is ...


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Well, I'm by no means an expert on giving this answer, and yet I'll take a go at providing something reasonable. Assuming a 1ha biodiverse, properly hydrated, young stage forest with optimal leaf coverage that gives us a solar catchment area of 10,000 square metres. Subtract say 20% to account for immature trees amongst the larger growth, another 20% for ...


7

OK, one possible setup (and assuming both my math and memory are right, neither of which is certain): Planting Douglas Fir, which is fairly fast growing (one to two feet a year) and a good wood for lumber and for burning, planted around 16'-18' apart (or half that, and thinned as they grow). They become large enough to be commercially valuable at around 30 ...


6

Conservation It is a fundamental law of physics that matter/mass/energy (all being, ultimately, the same thing) cannot be created or destroyed — they just change form. Under 'normal' conditions on Earth, any carbon atom that exists will continue to exist in perpetuity. It can and will form temporary bonds with other atoms to form distinct substances with ...


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https://chimneysweeponline.com/howood.htm lists the energy content of a wide range of wood types. Some examples that are perhaps relevant to you: Beech, Blue (Carpinus caroliniana): 23.7 MBTU/cord Ash, Black (Fraxinus nigra): 17.9 MBTU/cord Sycamore, American (Platanus occidentalis): 17.9 MBTU/cord Larch (Larix laricina): 19.5 MBTU/cord Cottonwood (Populus ...


6

True sustainability is not dependent on outside sources. Try to learn the art of coppicing for fire wood, along with growing self propagating plants such as black locust which grows fast and produces more saplings along the root system and then can be cut for wood within a year or two. You would not need to purchase trees often once the coppice method is ...


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I am not sure I am qualified to answer all your questions but here are the ones I feel qualified to answer. Phased selection The first point I would make is that trees in the wild do start off in dense thickets and naturally self-select as they get larger. I would expect that this has a number of benefits for the soil such as reduced erosion. I would ...


4

I've done this calc for my farm here in Alberta. I know that it takes 5 cords a year to heat my house. The average lifespan of trembling aspen is about 40 years. At that point it's about 40 feet tall, and 8" diameter. The average spacing in my woods is about 10 feet. So 100 ft2 into 40,000 ft2/acre gives me about 400 trees per acre. So with 400 per ...


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I don't have enough reputation yet to write a comment, so don't see this as an answer, more like a recommendation. I grew up with a wood stove, so maybe I can help. This may be one of the causes of my temperatures (around 100-200 C) which do not take off easily. That is definitely not a good temperature to burn wood. You want the fire to be >300°C for ...


3

Typically, where I live, forestry professionals use solid cubic meter of wood as the primary measurement. But, let's define all of the measurements. In this answer, I use the metric ton (1000 kg) as the definition of 1 tonne. Loose cubic meter of wood is the amount of wood that will fill a container of 1 cubic meter, if the wood is thrown there in random ...


3

Yes. Moz's comment is correct. When burning wood, you are in essence just shortcutting the rot process. Which means that instead of fungi and bacteria and bugs getting lunch, you get warm. These critters have their place, so it's not a good idea to intercept all of the production of a given forest. For this reason a high efficiency stove can be more ...


3

Masonry heaters are stoves with a masonry component ("stones") of 800kg or more. They are installed into a home and are sized after the room size and insulation. (The sizing is quite important as you don't want a stove too strong or too weak, so it is recommended to consult a professional.) Used correctly, the inside temperature gets quite high, so that the ...


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Efficiency numbers are, unfortunately, misused/abused by companies that manufacture and sell wood heaters. "Combustion Efficiency" is not actually a direct measure of how much heat is produced by burning wood. It's a direct measure of "how completely (or cleanly) the wood has burned". A stove that has an 89.1% combustion efficiency burns 89.1% of all the ...


2

I would present a different analysis to jamesqf, because his does not take into consideration the latent heat of evaporation, or at least does not mention it. If we're assuming a regular hardwood used typically for firewood (here in the UK at least), which has a net calorific value of 4.06 kwh/kg at a moisture level of 20%, if this is burnt in a stove with ...


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Per Google, 1 kWh = 3412 BTU. (And a fraction, which I'll neglect.) Here's a table (one of many found with Google) of BTU/cord for various kinds of wood: https://chimneysweeponline.com/howood.htm It varies a lot by species, but let's say 20 million BTU per cord, and 3500 lbs/cord as average for hardwoods. So 1 lb of average hardwood gives you 5714 BTU. ...


2

How much energy could we actually gain from biomass from a given forest size if it was actually green? Primary productivity is the term used to describe the rate at which energy is converted into organic material via photosynthesis. Deciduous temperate forests have a net primary productivity of: ~6000 kCal/m²/year ~16 kCal/m²/day ~67 kJ/m²/day ~0.0186 kWh/...


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Here's an example of a device that measures the moisture of wood electrically, via resistance. While the electrical measurement will bequick, I'm sure that the procedure described by Yadav Chetan provides a far more representative result.


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I think a review of photosynthesis is in order. The CO2 plants take in are actually stored as sugars. Burning this will release it, but wood that decomposes naturally would have those sugars broken down by animals and fungi etc (who will release co2 via respiration) but will actually use much of that carbon to build their own bodies and keep the carbon ...


1

Yes and no. The answer to the question you asked is yes. Biodegradation produces carbon dioxide and heat. The heat of biodegradation will be wasted. It makes much more sense to usefully harvest the heat stored in wood, and thus, not letting it biodegrade but rather burn it in power plants. However, you seem to think there are only two options: ...


1

The simple answer is that burning it would be roughly carbon neutral (it releases what it absorbed during growth) versus letting it decompose where it would be a carbon sink. Fossil fuels in the ground came from this vegetative carbon (+ millions of years and pressure). Burning renewable fuels is considered better than burning fossil fuels in the ground ...


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Native timber species (that just might be offered to you) as fuel (all 5% moisture): Beech 17Mj/kg Oak 16MJ/kg Pine 17MJ/kg (BTU/cord would be little understood in these islands) Remember that pine is substantially less dense than the hardwoods A source for the info: UN FOOD AND AGRICULTURE ORG WOOD FUELS HANDBOOK Most important: CLEAN YOUR CHIMNEY! As ...


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I have been cutting poplar trees for firewood on my 11 acre mixed use property for a few years now , since I have retired . I discovered many 50 to 60 foot tall trees , straight with few limbs , and 12" to 15" and more at the base . Last year I cut 30 down of these large trees and wound up with 6 cords of stacked firewood , cut and split. 5 trees to the ...


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