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cornish wood burner

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Everything posted by cornish wood burner

  1. Certainly with the biomass chippers the productivity goes up dramatically with hp and mouth size. The same should apply to any chipper unless you are chipping twigs I guess.
  2. Also chipping slabwood at the mill stage will give a better chip than after it's dried. Certainly better for any boilers with a fussy feed system. You will end up with a product that has a value and quality close to roundwood chip. Only down side is a little extra bark but it shouldn't make a huge difference.
  3. Stubby, please could you wish him well from me when you are in contact with him next. Not met him but he sounded like someone you could rely on. Perhaps ask him if he has caught any fish yet.
  4. It sounds like you would have been a prime candidate for a chip boiler. I normally run our RHI chip boiler at about 80% capacity. However I can get the rated output 24 hours a day if necessary but run lower to improve efficiency and longevity. I can imagine keeping your boiler topped up is bit of a chore. Feeding it with 25 kg of wood per hour to get your 80 KW must almost be impossible. The problem with any boiler is continuity of supply. Without it you have no chance. Our big chip boiler (non RHI )has a flawed feed system and suffers a visible big drop in output because of it. Unfortunately there is some very poor advice and design out as we have found over the years. I now do not trust any salesman or system design and always do my own calculations on it. We have turned down many more than we have approved.
  5. Presumably you mean 380 KWh per day so assuming your boiler is 80% efficient and your wood is 20%MC then that is about right.
  6. Depends on their demands so you can't really gain much info from those. We run a 1 MW boiler through the summer but only expect about one MWh even on a cool day.
  7. Those figures depend on demand so small demand will result in a small reading on the meter.
  8. Hi Graham Are you saying your boiler is not giving it rated output or is inefficient? You say the fan usually running at 100%, so presumably you keep it topped up with wood or could the fan be blowing your heat up the flue when the wood runs low. Might be interesting to weigh a batch of wood and see what heat is recorded on your meter from it. That should tell you how efficient your boiler is. Presumably your meter is very close to the boiler before your heat store so there shouldn't be much unrecorded heat Sorry hit quote rather than reply
  9. Could be many many things. Rather than guessing I would get the fault read. Probably cheaper in the long run. How much do you rate your time per hour?
  10. Perhaps that idea might have been of use with those smokey glen farrow boilers talked about on here a while back, I know they wouldn't believe it but I think we both thought some of their problem was too cold a return/chamber cooling the burn.
  11. The local one keeps the trailer option open so that's the one I would go for. I expect it would struggle with the Cornish hills when towing but plenty of gears. Anyway thanks for the heads up on that. Thanks Harvey I think it's the same engine by the Citreon Peugeot pas group.
  12. That's interesting because I have a twin wheeled trailer and I was wondering if I could tow it. From its early days I remember the Peugeot 1.9 had a good reputation. Good to hear you guys confirming that. Even at that age the van is probably a better long term bet but losing the cars handling and trading 160 horses for 70 makes it a difficult decision. Thanks for all the opinions and info, it looks like I have some thinking to do.
  13. Certainly would. I have a place to put it but I suspect Bonsai would want more than a few beers to deliver it.
  14. Thanks Shane. Didn't really set out looking for one, but came across a mint condition one in my local garage. The non turbo might be bit of an embarrassment up hill especially loaded but it looks a size I could live with.
  15. Seems quite a usable van for its size. Any idea when they started putting the emission rubbish on them?
  16. Thanks, I thought that's what it might be but didn't come across anything definite. Much appreciated.
  17. I am considering a w reg 1.9 expert as a cheap runabout. Does anyone know what the road tax would be? It would replace a car as my going to work vehicle, and save towing a trailer when cutting my firewood. It's much slower than the car it would replace (MGZR 160) but I think I could put up with that, in return for the van convenience and be able to travel off road with no trailer to pick up my wood when its wet. I did look at new vans but I only travel a few miles a day so the dpf etc would give trouble. Wouldn't normally consider anything this old but it's like new, fsh, and simple old tech so hopefully fairly reliable. Opinions welcome but I definitely do not need a 4x4.
  18. Shouldn't that be in the overloaded thread?
  19. Why not use end grain sealer. That's what it's made for.
  20. I would test the flow through the rad next. No cost involved except labour
  21. Komptech do one that will do 12 inch plus another 20 inches or so 780 hp CAT engine. Perhaps a little OTT They definitely do smaller but I'm not sure of the choice of power sources with the smaller ones though
  22. Last Skodas I drove and rode in seemed pretty boring. I know exactly what you mean when you think you will miss something. Everyone's different but I had one as a loan car for a day and hated it. I would have thought something like a Focus or Seat would be more interesting. Plenty of engine and spec options with those without breaking the bank. What you need is to walk to your car and smile when you see it. Life's too short.
  23. Then another 3 for the labour cost when it gets here. Being outside in the damp for a while, my guess is you have a stuck centrifugal switch. Why not rip the back end of the motor off and check. It's contacts should be closed when stopped and open against a spring when the motor spins up to speed. This then cuts out the start winding. We send larger motors away for repair but the small ones are hardly ever worth it.
  24. Which is of course why they run a 9 inch at approx 1/2 rotational speed of a 4.5 inch. The point I was getting at is in a 9 inch disc there are many more particles or mass /mm of radius so the centre needs to be stronger to take these forces. Shed the outer part of the disc then that leaves you with a stronger disc than an original 4.5 one.
  25. No. Think of two separate windings each supplied by the sinsudoidal mains voltage. The capacitor changes the timing between these two waves and this affects the magnetic field which drives the rotor in one direction or the other. If you change the polarity of either start or field winding then a serviceable motor will run in the opposite direction. Change both it will stay running in the same direction. Was this a test? If it was I did the same one about 45 years ago. I suspect I can guess your capacitor test method and it always seems impressive. I'm sure you're right not to put that on a public forum though.


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