Andrew,
8,000 hours per year makes the payback look good but is it realistic for small scale
CHP?
When I have visited CHP plants in Denmark, or looked at the duty of CHP in other
locations, it appears that the heat loads and actual run time of the small scale
plants is about 4000-5000 hour per year. Some even shut down on weekends.
If you're running a CHP gasifier do you generate power when you have no heat load?
Our sawmills often use an air cooled condenser to waste heat for balancing dry kiln
loads with turbine demand for full power generation. I suppose that could easily be
done with a gasifier CHP. In northern latititudes it would be pretty easy to waste
heat for a small scale system.
Tom
----- Original Message -----
From: "AJH" <andrew.heggie@dtn.ntl.com>
To: "gasification" <gasification@crest.org>
Sent: Tuesday, October 29, 2002 12:49 PM
Subject: Re: GAS-L: Gasifier Annual Use and Engine Life
> On Tue, 29 Oct 2002 09:45:25 -0800, "Tom Miles" <tmiles@trmiles.com>
> wrote:
>
> > The requirement for most CHP systems would be 4,000-6,000 hours per year.
>
> The figure of 8000 is more generally used here in UK.
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