[Digestion] flex-use plant

Thu Nov 16 12:29:14 CST 2006

There is a whole village in Germany that is heated on the waste-heat
produced from the ic engine/turbines that burn the biogas to feed electric
to the grid. 
http://www.bioenergiedorf.info/start_english.htm

I don't see how you would have much excess heat just from the digestion
process in Jan/Feb in NY. The idea to use the excess heat to do adsorption
cooling in summer seems more like it to me. 

Niko Horster
Construction Coordinator - O'Hara & Gercke, Inc.
205 Billings Farm Rd., Building 6, Suite B
White River Jct, VT 05001
802.291.9990   ext.106 * 802.291.9991 fax
niko at oharagercke.com 

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Today's Topics:

   1. flex-use biogas plant? (Jason Perry)
   2. Re: flex-use biogas plant? (Lu?s Ferreira)
   3. flex-use bio gas plant (mylesacc at comcast.net)

----------------------------------------------------------------------

Message: 1
Date: Thu, 16 Nov 2006 11:47:50 +0000
From: Jason Perry <perry.jason at gmail.com>
Subject: [Digestion] flex-use biogas plant?
To: digestion at listserv.repp.org
Message-ID: <455C4FE6.5000606 at gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hi all,

This is more of a question about energy recovery from biogas than about 
digestion itself. This is also a semi-hypothetical situation. Let's say 
you have a school in New York State that has multiple dairy farms within 
3 miles. Peak natural gas use for heating the school is in 
January/February; gas use drops to almost nothing in the summer. In 
theory, if all of the dairy manure were recovered and brought to a 
central digester near the school, the biogas produced could more than 
cover the peak heating demand.

But what to do with surplus biogas for the rest of the year? Generate 
net-metered electricity, of course.

Does such a system exist, where biogas is diverted from one energy use 
to another (or some combination in between) depending on need?

Thanks for any thoughts,

Jason

------------------------------

Message: 2
Date: Thu, 16 Nov 2006 14:43:27 -0000
From: Lu?s Ferreira <lferreira at isa.utl.pt>
Subject: Re: [Digestion] flex-use biogas plant?
To: "Jason Perry" <perry.jason at gmail.com>
Cc: digestion at listserv.repp.org
Message-ID: <002201c7098d$a5e38aa0$550b11ac at isa.utl.pt>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
	reply-type=original

Hi Jason,

Just an idea! Why not to use the surplus of heat from the biogas conversion,

for district cooling during the summer.

Luis

----- Original Message ----- 
From: "Jason Perry" <perry.jason at gmail.com>
To: <digestion at listserv.repp.org>
Sent: Thursday, November 16, 2006 11:47 AM
Subject: [Digestion] flex-use biogas plant?

> Hi all,
>
> This is more of a question about energy recovery from biogas than about
> digestion itself. This is also a semi-hypothetical situation. Let's say
> you have a school in New York State that has multiple dairy farms within
> 3 miles. Peak natural gas use for heating the school is in
> January/February; gas use drops to almost nothing in the summer. In
> theory, if all of the dairy manure were recovered and brought to a
> central digester near the school, the biogas produced could more than
> cover the peak heating demand.
>
> But what to do with surplus biogas for the rest of the year? Generate
> net-metered electricity, of course.
>
> Does such a system exist, where biogas is diverted from one energy use
> to another (or some combination in between) depending on need?
>
> Thanks for any thoughts,
>
> Jason
>
> _______________________________________________
> Digestion mailing list
> Digestion at listserv.repp.org
> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
> 

------------------------------

Message: 3
Date: Thu, 16 Nov 2006 15:00:29 +0000
From: mylesacc at comcast.net
Subject: [Digestion] flex-use bio gas plant
To: digestion at listserv.repp.org
Message-ID:

<111620061500.5643.455C7D0C000F2ADD0000160B22135753330C0C0E9C0A049703 at comcas
t.net>

Content-Type: text/plain

Jason,

I have worked with a company New Energy Solutions Inc (www.nesi.biz) they
have a method of converting ADG from dairy manure into pipeline quality
natural gas, which also can be compressed for CNG vehicles. NESI also can
produce ultra-pure hydrogen from the digester gas. NESI has a beta site on a
dairy farm near Cornell Univ.

Peter Z

------------------------------

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