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Post by Chris on Oct 24, 2014 14:49:06 GMT
Think it's ChrisB that likes wood and forests and all that so thought you might like this!  |
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Post by pre65 on Oct 24, 2014 15:05:06 GMT
COR !!
That would keep my wood burner going for a while. 
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Post by Sovereign on Oct 24, 2014 16:31:20 GMT
Here is six tons that was delivered to my house last week, should keep me going till February  |
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Post by ChrisB on Oct 24, 2014 18:27:31 GMT
Thanks for that Chris. I have actually seen that before, but isn't it great? My picture is not nearly as cool (despite the cooling tower) but here's a pile of wood that I made about 9 years ago - there's about 22,000 tonnes there!!  |
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Post by Sovereign on Oct 24, 2014 19:06:45 GMT
I'll keep quiet next time ;-)
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Post by Chris on Oct 24, 2014 19:15:09 GMT
Cool pic that! Reminds me a lot of a pipe yard I used to work in. Very similar layout.
What's the next part of this process?
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Post by ChrisB on Oct 24, 2014 19:49:30 GMT
Most of it was delivered in 2 and 3 metre lengths, stacked on that yard and then put through a 1,200 HP chipper. We ended up with a pile of chips about 25mm square and 5mm thick. That's what the big white heaps in the middle are.
After that, it was ground up in a hammer mill to a particle size of max 2mm in all dimensions. Then taken to a ground hopper with a screw feeder where it dropped into a rotary valve.
The valves delivered the fibre into one of a pair of 8" diam. pipes with a pressure of just 1 bar which transported it about 500 metres and up about 12 stories to a burner head in a whacking great 4,000 tonne boiler - one of 2 biomass burner heads delivering 20 tonnes of wood fibre per hour (among 38 more coal burner heads).
The wood was then fired through the head into a 1 million horsepower inferno! The resulting steam was used to drive a turbine that is connected to a fat bit of cable. 23,000 volts AC current! Then into a transformer and a step-up to 400,000 volts, by which time it's ready for the National Grid.
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Post by ChrisB on Oct 24, 2014 20:15:50 GMT
The biggest timber store ever was built at Byholma airfield in Sweden after cylone Gudrun, which flattened 75 million tonnes of trees in 2005. I was there the month it happened and they were trying to work out what on earth to do with it. This image is of about one million tonnes. The logs in our store were 2 and 3 metres long but these are 12. The timber is being sprayed with water to prevent a fungus from getting into it and causing a blue coloured stain. This is something that the Forestry Commission developed after our storm of October 1987.  |
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Post by MartinT on Oct 24, 2014 22:26:48 GMT
Wood on a scale I've never imagined!
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Post by Deleted on Oct 25, 2014 4:32:34 GMT
Think it's ChrisB that likes wood and forests and all that so thought you might like this! I like it.  I might try try and do the same. |
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Post by Chris on Oct 25, 2014 6:00:58 GMT
Bloody Hell! I'd kind of thought it was for burning but just couldn't work out the logistics of it.
Many thanks for explaining that and good pics as well.
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Post by ChrisB on Oct 25, 2014 6:14:32 GMT
That was early days and things have moved on a lot since then. At the same time as that was happening we were trying to set up new, faster growing plantations and other more agricultural type crops with UK farmers and foresters, grown specifically to feed the monster. At the start, the first fuels that were being used were things like olive cake, which is the mush that is left over after olive oil is extracted. That used to stink a bit!
I used to get sent samples of all types of weird organic matter from all over the world and received some very bizarre phone calls. What do you say to a man who asks you if you're interested in buying 10,000 tonnes of toast crumbs?!
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Post by Chris on Oct 25, 2014 6:17:35 GMT
HOW THE HELL do you end up with 10,000 tons of toast crumbs!!??
Too weird.
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Post by MartinT on Oct 25, 2014 7:18:46 GMT
Really BIG breakfasts.
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