Compost Heat Generator

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Garage_Hermit

Registered:1359070732
Posts: 2,240

Posted 1397689306 · Edited	Reply with quote #1

Quote: Compost can reach a core temperature of 70 degrees Centigrade. Conventional Hot Water systems are thermostatically set to heat the water to around 65 – 70 degrees centigrade. So at its peak this system will create very hot water for free. http://permaculturenews.org/2010/01/11/free-hot-water-from-compost-wheelie-bin/ updated sluggish link... https://www.pinterest.com/pin/237916792787574479/ I reckon a copper coil would be an interesting modification... G_H Updated - here is another take on this idea... http://article.wn.com/view/2014/03/24/Firewood_thief_raids_kindy_with_wheeliebin/ __________________ (1) "Heat goes from hot to cold, there is no directional bias" (2) It's wrote, "voilà" unless talking musical instruments...

SolarInterested

Moderator
Registered:1352940256
Posts: 1,067

Posted 1397691723	Reply with quote #2

Nice find G_H. I like the scale of this which is at a size easily experimented with. Something for Gary to add to his page at http://www.builditsolar.com/Projects/Sunspace/sunspaces.htm#CompostHeat __________________ Both temperature rise and airflow are integral to comparing hot air collectors

mattie

Registered:1383913384
Posts: 283

Posted 1397755217	Reply with quote #3

Here is another clip on the topic

gbwillson

Registered:1352981942
Posts: 2,320

Posted 1397761072	Reply with quote #4

Neat idea- Just a note...The amount of heat created by a compost pile or bin in this case, can be controlled somewhat by the ratio of green(fresh grass) to brown(twigs). Too much green though and it can start to stink. But since the idea above will be used in winter, the odor will be diminished by the cold. I wonder too, how well this would work in a bin with no ventilation. I suppose a PVC pipe with holes drilled in it could be pushed down to the bottom. At the dog park a couple of winters ago the city brought is several dozen huge piles of wood chips. The piles were never spread out until late the next spring. All winter long these piles had steam rising from them and they never froze. Below is a link from an earlier discussion of something I copied from the University of Minnesota Ag Dept: http://simplysolar.supporttopics.com/search?searchid=31616099&showas=post&userid=2012531&sort=lastpost&order=desc Greg in MN

SolarInterested

Moderator
Registered:1352940256
Posts: 1,067

Posted 1397776187	Reply with quote #5

Gregg your link takes me to a search page with no parameters filled in. __________________ Both temperature rise and airflow are integral to comparing hot air collectors

gbwillson

Registered:1352981942
Posts: 2,320

Posted 1397824095	Reply with quote #6

Yeah... I suppose it would help if I copied the link instead of the search. Try this. Greg http://simplysolar.supporttopics.com/post/solar-dans-sunspace-6481871?highlight=compost&trail=90

mattie

Registered:1383913384
Posts: 283

Posted 1398757361	Reply with quote #7

Hello all Heres some more on the topic from the BIS blog.The page is in german but if you use chrome as your browser it will translate it automatically when you visit the website. http://www.linaria-ev.de/biomeiler/ Regards Mattie

hhampster

Registered:1419437185
Posts: 4

Posted 1419439651 · Edited	Reply with quote #8

Ideas for making something similar is always circling in my head. I planned make something like this guys do http://www.mofga.org/Publications/MaineOrganicFarmerGardener/Fall2014/InnovativeSystemHighTunnel/tabid/2843/Default.aspx I am just curios I have few coils one 100 feet oxygen barrier and one 200 feet pex-al-pex from pexmall.com is okay use them together? Anyone have experience make this system? Any thoughts?

Philo

Registered:1420723344
Posts: 3

Garage_Hermit

Registered:1359070732
Posts: 2,240

Posted 1443646817 · Edited	Reply with quote #10

UPDATE: We are getting very warm weather so been getting the garden ready for winter... Rather than taking my latest load of green rubble to the local tip, I just crammed it all into an 80-liter black bin, and jumped around on it for a while... Then put the lid on and decided to leave it for a few weeks... Next day, the lid blew off, a foot into the air, as I happened just to be in the vicinity - pretty spectacular & noisy sight! This got me thinking "methane", so I added a few gallons of water and put some rocks on the top, then replaced the lid & weighted it with a big rock. So now it's Wait and See, while I design a methane offtake... (If I am not back on here, reporting, within a few days, the thing has exploded on me, and I will have changed phase, from solid to gaseous...). G_H http://www.uk-energy-saving.com/anaerobic-digestion.html __________________ (1) "Heat goes from hot to cold, there is no directional bias" (2) It's wrote, "voilà" unless talking musical instruments...

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