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Author Topic: heating from compost  (Read 7479 times)

sausagesandcash

  • Joined Jan 2009
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heating from compost
« on: August 01, 2009, 12:18:29 am »
Discovered this quite by accident, but thought it might be of benifit to rustyme and other likeminded folks. Wonderful idea and well worth the look.

http://www.electricitybook.com/composting-for-heat/

http://www.motherearthnews.com/Renewable-Energy/1981-07-01/DIY-Water-Heating-Compost.aspx

Regards,


Morgan

rustyme

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Re: heating from compost
« Reply #1 on: August 01, 2009, 12:57:35 am »
cheers Morgan ,
               I have seen them before . I saw the Jean Pain youtube thing and made a system similar , but I didn't have all the brush from woods to use . I made mine using ordinary compost , just to see how it worked . It worked well , and If you had access to enough brush then I am sure it would be a good free set up . The only thing is that heap is BIG ... I mean BIG   BIG . ok if you have the stuff and lots of people to help , I don't ...not enough stuff ..and only little old me .... :( But I think it would  work well...


cheers

Russ

sausagesandcash

  • Joined Jan 2009
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Re: heating from compost
« Reply #2 on: August 01, 2009, 10:10:45 am »
We have a large recycling place a few miles away with tons of shredded de-nailed pallets - trailer loads of mushroom compost available, old bales of silage straw and hay, and the space to do it. I'm also fairly handy on a 360 dumper ....... God i'd love to give give it a  go, but I just don't think I could afford the trip to the divorce courts!!   ;D

Morgan

 

smiffy

  • Joined Jun 2008
    • http://www.northmoor-rarebreeds.com/
Re: heating from compost
« Reply #3 on: August 03, 2009, 12:04:24 am »
a friend of mine is experimenting with a muck heap!

he has piled lots of tubing through the heap and turns the water on, the water that comes out the other end is  HOT!!

This was just an experiment, he is now working out how to replace the manure, or a top up method that will be ensure continuity, without disturbing the microbes that rot the manure too much, and loosing heat. As once the manure is fully rotted it no longer heats up.

he believes is the pipe is run underground then it wont cool down too much from the yard to the house

He says he will have this sorted by the time he is ready to build his house and will be running all his hot water to the house through his muck heap!

For us this would be a fantastic way to generate hot water as we have tonnes of much every year!

sausagesandcash

  • Joined Jan 2009
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Re: heating from compost
« Reply #4 on: August 03, 2009, 06:57:48 pm »
I'm converting a garage for my mum and would love to try it as a heating option. We have substantial acerage lying fallow, so plenty of room to experiment. I would like to get my plumber and welder mates round for a think in to see what we can come up with. Don't fancy coiling 100 metres of pipe, thank you!

rustyme

  • Guest
Re: heating from compost
« Reply #5 on: August 03, 2009, 07:09:08 pm »
an old uninsulated copper water tank in the middle of a huge pile of horse crap an straw would do the job surely ? pipes in and out already to go ...Place tank on floor ,connect in and out pipes,  build crap heap round tank , leave till done... You would have to go careful near the tank when dismantling , but I can't see why it wouldn't do the job ????

cheers

Russ

doganjo

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Re: heating from compost
« Reply #6 on: August 03, 2009, 08:26:39 pm »
You would need to keep adding to the heap, though, wouldn't you - to keep it hot, so you would therefore also need to be able to remove the bottom layer.  It all sounds like an awful lot of bother for what it's worth.  Why not just bury the pipes - the ground is pretty warm 2 metres down!
Always have been, always will be, a WYSIWYG - black is black, white is white - no grey in my life! But I'm mellowing in my old age

sausagesandcash

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Re: heating from compost
« Reply #7 on: August 03, 2009, 09:03:07 pm »
If you can find soil that brings water to 60 degrees celcius, i'm all ears! I agree rustyme, but I want to construct a rectangular compost pile with a rectangular water resevoir 3/4 's the way up and see how that goes. I'd like to experiment and see if the heat will rise through the pile, or if i'm better with the Jean pain method of having layered pipes (messy).

Morgan

doganjo

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Re: heating from compost
« Reply #8 on: August 03, 2009, 09:13:08 pm »
Quote
If you can find soil that brings water to 60 degrees celcius, i'm all ears!
  I'm no engineer but is that not how a ground source heat pump works?
Always have been, always will be, a WYSIWYG - black is black, white is white - no grey in my life! But I'm mellowing in my old age

sausagesandcash

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Re: heating from compost
« Reply #9 on: August 03, 2009, 09:24:11 pm »
To 60 degrees!! I have a friend who installed one and the electricity costs of the pump are astronomical

doganjo

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Re: heating from compost
« Reply #10 on: August 03, 2009, 09:32:20 pm »
My Pal is building an eco house at the moment and she said it wasn't very expensive but I don't know how much or what she compared it to.  We knew someone who did a barn conversion and installed a ground source system, it was enough to heat and provide hot water for a five bedroomed house.  I don't know what temperature it took the water to but is 60 degrees celsius not extremely hot?  My house is always at 24 I think.  Why do you need it so hot?
Always have been, always will be, a WYSIWYG - black is black, white is white - no grey in my life! But I'm mellowing in my old age

welshboy

  • Joined May 2009
Re: heating from compost
« Reply #11 on: August 03, 2009, 09:55:42 pm »
ground source heat pumps are very efficient at low output temperatures say 30c which is enough to run underfloor heating if you space the pipes close together. Our gshp is capable of water out at 55c but the efficiency tails off so rapidly it is a no no at those temperatures. The real trick is to get the input temperature up a bit to just under 20c (easy with a zinc roof covered and trickle fed) then the gshp is only working to raise the temp from 20c to 30c
and is remarkably efficient.

sausagesandcash

  • Joined Jan 2009
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Re: heating from compost
« Reply #12 on: August 03, 2009, 09:56:48 pm »
I'd love to say my mother is like a rare orchid, and needs her heat.... You just circulate the water in the rads when you need heat, the rest of the time you have hot water on tap.

doganjo

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Re: heating from compost
« Reply #13 on: August 03, 2009, 10:40:37 pm »
But - 60?  That's nearly boiling point if you are on top of Ben Nevis!
Always have been, always will be, a WYSIWYG - black is black, white is white - no grey in my life! But I'm mellowing in my old age

sausagesandcash

  • Joined Jan 2009
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Re: heating from compost
« Reply #14 on: August 03, 2009, 10:42:23 pm »
Heat rads, switch off pump....easy and economical

 

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