openspaceman

My understanding is these floors have a plenum underneath and then slotted floor for the warm air to pass up through. When there is loose grain on the floor the air is distributed fairly evenly through the grain, also only 2-5% of the mass is exhausted as water vapour. With wood, especially in IBCs I wonder how much of the air will take an easier path between the containers. Also the air only passes through once, with grain that is ameliorated because there is a very high surface area and the moisture doesn't take too long to pass to the surface of the grain. With wood unless you have sufficient moist surface the air will leave the top less than optimally saturated. If you are blowing ambient air the only issue is the fan power but if you are heating the air then it could be leaving the surface still too far above ambient temperature which means heat is being wasted. My old boss built a number of wood chip dryers based on this principle of dry warm air fed in at the bottom and colder saturated air being exhausted and it's an art deciding when the wood at the top is nearly dry because whilst the bottom layers become in equilibrium with the incoming warm air saturated colder air can actually redeposit moisture into the top layers. With woodchip this is visible and obvious but I don't know with logs.

My second try at posting a reply; I have used Hep20 with push fits for DHW but never joining old imperial. I would use a push fit to compression adapter and a 3/4" imperial olive, chiefly because I am poor at soldering wet fittings

Yes, similarly nightjars look like raptors

Not heard a cuckoo here for much longer than 10 years. Normally manage to hear one when working further south and in woodland but getting fewer and fewer. Last time I remember seeing one was working on a dairy farm 48 years ago

Can you send me the python you're using, or if you tried then what was the problem? Writing to file is reasonably straightforward. The problem is I do not code, not since fortran4 and a little O for a Psion. I adapted someone else’s code a long time ago and cannot remember what or how I did it. See below: #!/usr/bin/python # -*- coding: UTF-8 -*- import serial, time, struct, array from datetime import datetime ser = serial.Serial() ser.port = "/dev/ttyUSB0" # Set this to your serial port ser.baudrate = 9600 ser.open() ser.flushInput() byte, lastbyte = "\x00", "\x00" cnt = 0 while True: lastbyte = byte byte = ser.read(size=1) # print("Got byte %x" %ord(byte)) # We got a valid packet header if lastbyte == "\xAA" and byte == "\xC0": sentence = ser.read(size=8) # Read 8 more bytes # print "Sentence size {}".format(len(sentence)) readings = struct.unpack('<hhxxcc',sentence) # Decode the packet - big endian, 2 shorts for pm2.5 and pm10, 2 reserved bytes, checksum, message tail # print array.array('B',sentence) pm_25 = readings[0]/10.0 pm_10 = readings[1]/10.0 # ignoring the checksum and message tail if (cnt == 0 😞 line = "PM 2.5: {} μg/m^3 PM 10: {} μg/m^3".format(pm_25, pm_10) print(datetime.now().strftime("%d %b %Y %H:%M:%S.%f: ")+line) cnt += 1 if (cnt == 5): cnt = 0

it's a fudge IIRC but somewhat along these lines: Old 1/2" was internal diameter but with a wall thickness of 1.15mm became metric 15mm O.D. 3/4" I.D. has a slightly larger wall thickness around 1.2mm and becomes 21.45mm O.D. 1" I.D. with a wall thickness of 1.25mm becomes 27.9mm O.D. The difference is all taken up with the olives so to connect an imperial pipe to a metric fitting you need the imperial olive

The bright orange one? I could never start it by myself, I needed someone to drop the valve lifter decompresser thingy. I still cannot remember what happened to it.

The interesting thing about that site is they do not discriminate between domestic burning, industrial burning and bonfires. RHI must have significantly increase woodchip stokers and from experience I know they often get delivered well out of spec chip moistures content. I went to Data Archive - Defra, UK UK-AIR.DEFRA.GOV.UK to try and grep some hourly data at various seasons for one site but had not much success as my various terms brought up null data. One day I will get my particulate monitor recording to file and run it for 24 hours.

Didn't you say 67 yesterday? It's a fair analogy, my mother could recite a poem from "Flax of Dream" right up toward the end but not remeber anything from the past week. SImilarly my brother would recite a love poem to his wife from 50 years back but not remeber his way to the bathroom shortly before he passed away.

You have the experience so I'll accept that figure. When I was harvesting timber I reckoned it cost me about £2 per green tonne to do anything like moving it from stack to transport, perhaps I was being generous but with a "cube" of firewood containing say 0.5 tonne of green wood there's £1 spent getting it in and out of the Kiln, then there's the cost of energy to run the kiln. I suppose once it's in 1m3 containers that handling cost goes down a bit?

I would never expect to burn wood from end April till October but apart from a few days in April am still lighting it late evening. This is the first year I've really tried to maximise wood heat and minimise gas in this small semi detached cottage and have got through a log shed full, that is 8m3 stacked. I reckon that saves me about £350 in gas but it values my time preparing wood quite lowly. Given where you are I'm not surprised

Is this the colour change one that comes in at £24.50 delivered? Any foibles? I may lash out and try one for the first time, then do some tests.

Well HETAS (the owner of woodsure??) published a weak rebuttal and this page Government overestimating emissions from domestic wood-burning, says industry body - Air Quality News AIRQUALITYNEWS.COM A report commissioned by industry body HETAS claims that particulate matter emissions attributed to domestic... ends not supporting them. I guess the only way to get a figure on this is to find some 24 hour emissions data for different times of year. What we can say is that particulate pollution from other sources has declined for various reasons including catalytic converters and DPFs on vehicles so with no changes in wood burning the percentage contribution was bound to rise.

Most of these pumps are a cylinder with a piston rotated by a worm gear, as it rotates the piston moves in and out on a stationary cam. On the power stroke oil is delivered out the cylinder via a small hole, on Stihls this cylinder can be inserted wrongly so the output hole does not line up with the oil gallery. I am not familiar with the 240e.

Yeah my dad did this in the 50s, dismantling radios and radar sets from WW2 aircraft, would have made more sense to have left them whole. I still have the ice trays full of them 😀

Does it matter after you reach 50? I now have trouble hearing skylarks.

I thought Japanese stuff used JIS with metric threads, not JIC with BSP imperial threads popular on american equipment.

As you used the singular I think you only refer to HETAS-Woodsure but I think it applies to many cic / community organisation / quangos and the rub is in the wages they grant themselves with little scrutiny from toothless trustees and charity commissioners.

If there was no cone and american it was probably a tapered thread.

would that be a menage a troi? I managed to build a manege for my daughter's riding school 😉

Our Vermeer tree spade had JIC couplings, same threads as BSP but the cone and socket pipe connection the opposite way round,

Part of that is down to wide spaced planting and use of tubes. The plastics problem existed before tubes, even in the early 70s spiral guard s and whips predominated in hardwood planting. I was paid an extra half P to remove spiral guards when pruning poplar to 8ft, purely because of damage to the stems as they ingrew. The job was to remove and drop but despite my boss's [1] view that it was insignificant litter, I took them home and binned them, for which I was allowed to take the company Simca 1100 home and left my Bantam at work. [1] he never lived to see the problem from plastic waste was to be acknowledged as he died at 49.

Nor me but it remains a problem. I'll see if I can dig out a photo of my little friend, within 12 months of the photo I was engaged in my first forestry employment and got to run the trap lines on an estate in Surrey, so killed quite a few. It was pointless as only the adjacent FC land and our estate did any control. At the time 90% odd of my wages were rebated by the government so it paid the firm I worked for to get me doing pointless jobs. But it's not only red squirrels, they also out compete other native mammals for food, notably dormice. Just look how they strip hazels before they are ripe. No amount of re introduction of red squirrels will overcome their lack of resistance to parapox which is lethal to reds whilst greys are largely just carriers. I see some damage in gardens but overwhelming amounts in woodlands, especially beech. People will never see the grandeur of beech trees we were felling in the 70s, for furniture mostly, as those remaining are getting into their old age and suffering and the young have lost their form because of bark stripping. It is the middle of next month when you first notice the damage looking onto the trees from a distance and seeing the wilting and brown leaves in scattered clumps on trees.

Yes that's my take on it, as soon as it propels something not within the exemptions it must be on DERV. There apears to be an exemption for stationary use as long as it's not commercial. So currently I am thinking if you are running a wood chipper in a domestic dwelling for horticultural purposes it can use red, if you do the same in a commercial situation, like a pub car park or development site, it must be DERV but if it's in hospital grounds?

Yes that was my guess