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Can you turn compost heat into energy?

 
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I know how to catch the compost heat through circulating water through it, and how to put a methane midi inside it. But is it also possible to also turn it into energy? One person suggested the principal that hot water rises to push up hill and send it down a through a turbine. My understanding though is that it will only circulate in a closed system (eg. water pipes connected to and from a tank.

Any other ideas? I have also toyed with using wind to take water up a 10 ft rise from one dam to another and then bring it downhill through a hydro if needed. Anyone done this successfully - or is a NZ$12,000 solar panels and inverters system really the easiest way to go to be power independent (we already have the batteries to store about 10KW of use).

Annie
 
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Annie Hope :Welcome to Permies.com and our sister site Richsoil.com,With over 35,000 Fellow Members World-wide -you can come here often to find someone who

wants to talk about what you want to talk about ! Let me take a couple of small bites at your questions !

We should always try HARD to use the energy in the form we find it to avoid the inescapable power losses from changing that energy from heat to mechanical energy,

or electrical energy ! ( the problem IS the solution ! ) Compost can keep the floor area in a green house warm, or used for domestic purposes ! Warning you need lots

and lots of compostable materials with alternating piles of compost coming 'on-line' at different times. Compost can also help keep a Methane cooker working,

For looking at practical methane generation i like these people ! ///// Link below :

http://solarcities.eu/projects.

And at Facebook at

Solar CITIES Biogas innovators and practitioners

Do a google search for Hydraulic Ram Pumps, The best in the world seem to come from OZ and Canada, with both units reaching their efficiencies through

different routes. This meets my criteria of using the kinetic energy of falling water to life water where it needs to be. This does not mean that if you have the

opportunity to hold water behind a dam and use it at the times you choose that there is something wrong with using that resource even if you have to turn

water power into ether mechanical or electrical power that there is anything wrong with that; only that you have to ''do the math''


Windmills that use the power of the wind to make mechanical energy is more efficient pumping water than that windmill making Electrical power to run a

motor to turn a pump ! That being said, if you already have the batteries, it is nice to remember an Almost Universal rule that says then the sun isn't shining

the wind IS Blowing !

I hope you find this useful and timely ! For the Good of the Crafts Big AL




 
allen lumley
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Annie Hope : Opps! I meant to include a couple of other links to make your searches here And future posts more powerful ! //////// Links Below :


https://permies.com/t/43625/introductions/Universal

https://permies.com/t/34193/tnk/permies-works-links-threads

Big AL
 
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Being a sheep farmer and logger I have two of the biggest piles to make compost piles real heat up...sheep manure and wood chips...so I have researched this a lot.

Personally I think there is a future in compost energy generation, but I am not sure it would be in microhydro. I think the future lies in using the heat of compost for the heat side of a Stirling Engine, and ground temperature for the cool side. In theory it makes perfect sense, but I am not so sure we (as a society) are at a point where there are any reliable Stirling engines out there of size enough to power a generator of sufficient size. When they become available, I think compost heat will have a very big role to play in alternative energy...I mean turn sheep manure into electricity to power my barn and end up with compost to fertilize my fields! That is a sweet deal, now we just need a Stirling Engine that is up to the task!
 
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Research jean pain. He did exactly as you have described
 
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"Personally I think there is a future in compost energy generation, but I am not sure it would be in microhydro. I think the future lies in using the heat of compost for the heat side of a Stirling Engine, and ground temperature for the cool side"
I like this idea, but we can do better than ground temperature for the cool/cold side.
Check out passive ice boxes and zeolite ice makers.
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