openspaceman

I'm glad you found that, it confirms that the equilibrium moisture content tables you are reading are based on the moisture content on a dry weight basis so if we take as an example for you of 90% RH and 10 degrees C from your chart that gives an equilibrium moisture content of ~23% dry weight basis, which is a moisture content of 18.7 on a wet weight basis, quite a bit under the 20% target.

it's a variation of Parkinson's law which says work expands to fill the time available, in the same way if you fit a bigger bookshelf you will buy more books. I saw this when I started driving, many folk still had no cars and the local factory workers mostly bussed, walked or cycled to work. Once cars were common people would compete for work further than 5 miles or so, then the M25 was built and it became feasible to commute a few towns away, so my schoolmate took a job in East Grinstead which had been a 2 hour trek but was now 55 minutes and it was his time (and higher pay) which were the considerations rather than fuel consumption.

What worries me about this chart is that woodworkers and joiners generally use moisture content referenced to the dry weight of wood, for burning we usually reference the wet weight of wood and I cannot see on this site which moisture content they are using. So for instance if we have a mass of wood which consists of 20kg of water and 80kg of oven dry wood then a joiner might say that's 20/80=25% mc dry weight basis whereas I would say that's 20/100=20% mc wet weight basis. Also there is a hysteresis so as a log regains moisture content at a given RH and temperature it tends to maintain a lower moisture content than the same wood being dried in the same conditions. It is of course in the ballpark of gnat's piss but laws do need to be precise. BTW does anyone know how this 2m3 is defined, is it a bulk load or solid wood?

The equilibrium moisture content is lower in the SE of England. Beau's Dartmoor is a humid place which is why he struggles to keep seasoned logs below 20% because even under covered storage they can pick up moisture from the air. I don't think this legislation is police-able so it will come down to customer relations, it will be an upset customer that triggers an investigation by trading standards.

Yes. It's been a long time since I was in Belgium but all the rural houses had stacks of freshly felled logs drying under the eaves ready for the winter. UK seems to have lost a woodburning culture during the industrial revolution when coal became plentiful. Not many UK homes have the luxury of space to season wood and those that do tend to be owned by people who prefer to spend money on more convenient heating. Of course domestic wood burning for heat as opposed to luxury is a minority undertaking and insignificant in the scheme of energy consumption but it has its place in making use of what else would be a waste.

That makes more sense to me than replacing a firebrick in the combustion chamber with a boiler tank. The reason for insulating firebricks is to keep the combustion hot enough to complete inside the firebox. Sticking a cold surface in there defeats this. Far better to remove heat above the firebox after combustion has completed. The concept of quenching a burn before completion is easily demonstrated with a metal spoon and a candle.

This is my understanding I carry a multitool with two 1 1/2" blades on my belt most of the time and keep a locknife in my lunchbag, which I only take out if I am working or volunteering As a retired person other than on you own land, I doubt it.

Yes it could be a jammed relief valve or even a constricted return line but also consider that the bigger 3p pumps have a lower safe working pressure once you get above about 80ml/revolution which is why if you need to maintain 200bar and 100lite/min at 1500rpm you are better off with tandem 2p series.

I wouldn't be surprised if it has a TPO as it looks a fine tree.

Though it pains me to say it I agree with you, I felt the same about the sale of council housing, a big mistake for the country but I would have bought had I been a tenant.

I cannot see a thorn amongst them ;-), I'd call it a clump

I don't think this HS2 project has been well managed and I cannot see why it will be so expensive. Does anyone know how the projected costs are attributed between compensation, land purchase and civils/engineering work? I grew up in the age of the car and tend to use mine for all my travelling so I do not understand how people use the rail services but I do realise a lot of people in cities don't own cars and rely on public transport and taxis. Anyway one of the things it is supposed to address does include reopening some old lines and stations but this cannot be done while the current main lines share tracks with local traffic. There are often simply not enough time slots to fit extra traffic from old lines to run onto the existing network. Consider also that trains have to be separated by 15 minutes, so one 125mph train occupies a lot more track than a commuter train running at 45 mph. Taking high speed trains off the typical 4 track mainline could double its capacity for stopping trains. Also more lines were closed since 1920 before Beeching than after. Also think about how railways were originally funded, it was not by the government but by entrepreneurs expecting to make a profit from the investment.

Sort of; it makes a cleaner exhaust as less unburnt fuel gets past before the exhaust port closes, combustion takes place after that. Yes and the diesel has the advantage that the fuel is only injected after the inlet and exhaust are closed. With a conventional two stroke the piston descending on the power/exhaust stroke scavenges the fuel-oil mix from the crankcase and pushes it up the transfer port into the cylinder. some goes directly through the exhaust port. What the stratified porting aims to do is allow neat air directly, under the piston, through the new ports in the cylinder and into the transfer ports without going into the crankcase. Then as the piston descends this neat air is the first into the cylinder followed by the fuel and air from the crankcase.

It's against the trade's code of practice to repair or re end hoses so very unlikely to get it done. I too found them the best solution as carrying a pipe "crimper" around was not possible. I kept an ammo box of various sizes and ends, I even brazed some special ones on the spot to get a haulier out of trouble. Again these reusable fittings are deprecated by the trade's COP so tend to be strictly DIY. My ammo box with fitting was "mislaid" by a fitter at my old work so recommendations for a supplier needed as I get my old machines up together. I originally used a 7V angle grinder which just about had the energy to make a cut either side of a burst, how things have changes with a Li-ion powered angle grinder running for many times longer nowadays. Later I carried a cheap 900W generator for such work.

Many new stove installations into what was an open fireplace use a flexible flue liner which is then back filled with a bulk insulating material, like perlite or vermiculite. This keeps the column of exhaust gases rising up the chimney hot. This is done mostly to prevent condensates from forming and running back down. You can see the effect in some old houses where a coal fire has been replaced by a wood stove and the thing has been left smouldering , often with damp wood being used. The line of the flue is marked by a black patch where the pyroligneous acidic condensate has seeped through the brickwork, often damaging the mortar. If you have a decent masonry flue then you can have good resistance to this happening and the high flue temperature heats the flue and brickwork as the fire is blazing. As the fire burns down to embers the brickwork is still warm and continues giving off this heat to the house. Taken to the extreme is the masonry stove which is charged up with the whole load of logs for the day and fired off flat out for a few hours and then damped down once there is no wood left, the house then heated by the masonry with multiple flue passages. The same concept is used in soapstone stoves. I doubt may existing houses have the space for a masonry stove but some of the principles can be used with a traditional chimney breast. In my 1862 built house I had the chimney relined with cement many years ago, I fire my stove so that there is always a good active flame until only a bed of charcoal remains when I cut the primary air. The whole chimney breast is at blood heat when I retire as is the one in the floor above. This keeps the house warm till morning.

Have you considered using the thermal mass of all the masonry to complement the heating?

Ist picture is exhaust side, then two of inlet. It looks like something has been ingested from the carb and dinged the piston skirt. A modern stratified intake saw and little wear showing. Have you checked the ring gap?

Yes beech is about the heaviest but I was trying to work backwards from the 10p/kWh figure. 350kg to the bulk cubic metre at 20% drops the price to just over 7p per kWh. @Squaredy I was pointing out the unit of energy is kWh the W is capitalised as it is named after Watt. Whereas we don't capitalise wattage ? and the h is for using the power for an hour.

Too simple as your units are wrong but I agree with the gist of what you meant to say 1bulk cubic metre of wood seasoned to 20% weighing about 250kg?? contains 1000kWh and costs £100 It also burns less efficiently than the others so more heat is lost

I leapt to the conclusion he thought a previous structure had burned down!

I have one 4kW stove which is lit much of the time, though it has not been on these last two days as weather mild, and it heats my two small living rooms. The gas central heating only comes on twice a day if the temperature falls below about 15C. The wood burner keeps the solid wall house at about 18-20C most of the time. So far I have used up my log store whose internal dimensions give 3.8m3. So about 2.7m3 of solid wood at 20% mc. Given we are only half way through the winter, albeit a very mild one, I'll have to double the size for next year.

One can still find PDF copies of the original EA position statement found in the is old post: However they are not dated and the latest position statement (which covers treated wood as well, when intended for incineration at a licensed premises) expires in June 2020. So the salient point is that virgin wood is not waste, even if you are registered as a waste carrier and are transporting it, so no chain of custody is required. Of course if you are carrying waste then you must have transfer notes but there are allowances for when you take the material to one place wherein you can make an annual statement.

I read a bit of the article but as with much of this disease and pollution business they are confusing the cause with the result. The number of people dying from lung disorders is being directly attributed to pm2.5 concentration in the local atmosphere. It says nothing about exposure of the individual over their life or the lessening of their remaining life. Yes most particulates are man made and yes particulates do cause lung problems but it's not likely to be a direct correlation and the exposure now is less than the exposure many of we older folk will have lived through.

It's a piece of downland rather than a woodland where I shall be felling field edge ash next week. It was split into 20th of an acre plots and sold off, even to some chinese investors. The council have successfully stopped all development and the chap I work for has purchased all the accesses. He has granted the general public a permissive use, which in practice opens the whole field up. A good result all round as he has cut the scrub and returned it to a chalk downland again.

It's a single piece rather than taperloc. I would have expected to find a grub screw on one of the shoulders but otherwise I'm not familiar with this, sorry.