I would think that battery life would be reduced if you throw just anything at them. The incoming voltage needs to be somewhat controlled.
On Mon, Nov 22, 2010 at 3:30 AM, Geoff Thomas IMAP <[email protected]> wrote: > Hi Guys, it very much depends on the size and situation, I am a designer, > so I use a different mix of products for each situation according to the > total energy required per day, the available resource, the Peak load, > required storage, (ie days without input, - more relevant with Wind and > Solar because of the potential long eg wind droughts) possibility of > different input sources and such. > For the smaller systems, - up to app. 20kW I use the Australian company > Selectronic's SP Pro series, www.selectronic.com.au of which I am an > accredited installer. > I have yet to succeed in a tender for gasifier powered power, - tried for > one in the Kalahari in Africa, - they had endless thorn bushes, to burn, - > 250kW planned to use Bill Klein's machine, and a slightly smaller one on an > Island to the north of Darwin Australia, both using conversion and inversion > equipment you would not expect me to divulge. > The Oz site is still running on diesel, so that one may still happen, - I > put in a 75 kW wind powered system using the same concept on another site > for those folk and it is working fine.. > Possibly best if you contact me about particular situations, I want to make > known the general principles but not my suppliers and trade secrets as it > has taken years of severe slog to build this all up and only now does > bankruptcy start to look like receding to a more relaxed distance. > I will say that larger situations, - 150kW up, are in many respects much > cheaper in equipment than the smaller ones, although battery banks are close > to proportional, - Battery banks, app. 25cents/watt/hr using C10. > > The name I give this design concept is Battery Centric, it is already > reasonably widely used for small stand-alone solar and wind systems, and I > have helped to a degree Selectronics develop their units in that area, - > like almost everything in this whole renewable energy area, the real driver > is product development. > What I can tell you is that the control and conversion equipment is > available to do amazing things, you don't have to tailor your gasifier to a > specific requirement, you just have to make it reliable, - I, (and probably > others) can do the rest. > For example control the output power from your generator according to > inputs you can specify, - temperature or volume or hydrogen content of your > output gas or whatever you have found to be critical. > Hope I haven't made it all sound complicated, - it is really a > simplification process, batteries are like O blood group blood, - the > universal donor, once you put your however variable power into the battery > bank it can power anything. > (Also I guess the universal acceptor, you can throw any sort of variable > electrical power at it and it will be accepted). > All sorts of possibilities open up. > Cheers, > Geoff. > > On 21/11/2010, at 6:00 AM, [email protected] wrote: > > Today's Topics: >> >> 1. Re: Gasification Digest, Vol 53, Issue 1 (JHasty) >> 2. Details please Geoff in Australia (Max Kennedy) >> 3. Re: Details please Geoff in Australia (Rolf Uhle) >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Fri, 19 Nov 2010 12:57:49 -0800 >> From: JHasty <[email protected]> >> To: Discussion of biomass pyrolysis and gasification >> <[email protected]> >> Subject: Re: [Gasification] Gasification Digest, Vol 53, Issue 1 >> Message-ID: >> <[email protected]> >> Content-Type: text/plain; charset=ISO-8859-1 >> >> Hi Geoff from Australia, >> Curious, what is the brand and cost of your stand-alone and grid connect >> controller you are using for your gasifier/battery bank system? >> Thanks, >> Jay >> >> >> >> On Thu, Nov 18, 2010 at 5:05 PM, Geoff Thomas IMAP <[email protected]> >> wrote: >> >> Answering Doug and Greg, on the topic of getting your gasification >>> produced >>> power on to the grid, I use an Inverter that is a combination of >>> Stand-alone >>> and Grid connect, - this draws from a battery bank, and when the bank is >>> full, legally (yes, approved) exports the incoming power to the grid. - >>> It >>> is a response to customers who want their Solar input to continue when >>> the >>> Grid is down, and also those who want to use their own power when the >>> Peak >>> grid power charges are occurring. >>> This sort of system is also a whole house UPS so delivers very high >>> quality >>> power to all your appliances without spikes. >>> Yes, it is more expensive, the Inverters are more expensive than a >>> straight >>> grid connect inverter, and depending on the size of the battery bank, the >>> batteries can cost a lot as well. >>> (Just to pre-empt a discussion on batteries, I use high quality 22 years >>> design life lead acid Tubulars, 16.4 years life if you cycle 20%/day, >>> they >>> are not expensive and the manufacturer will take back any old batteries >>> and >>> re-cycle them, - lead acid battery technology has come a long way the >>> last >>> few decades). >>> The point of this system is you can use it for any input at all, your >>> electrical output from your gasifier only needs to be put into the >>> battery >>> bank, - ideal for batch gasifiers, and other intermittent renewables such >>> as >>> Wind or Solar, raining time only Hydro, (run of the river, er um >>> gutter:-) >>> and the Inverter can also charge up the batteries from a petrol, diesel >>> or >>> gasifier genset or even use the grid power at off peak times. >>> This is like putting an incredibly flexible gear-box between your power >>> usage and your generation system. >>> Obviously, for a gasifier it takes all the worry out of meeting specific >>> demand criteria, changing generator speeds and the like, all you need is >>> a >>> maximum power tracking type of rectifier, several now widely available, >>> and >>> you are ready to roll. >>> Hope that helps, >>> Geoff Thomas. >>> Australia. >>> >> > _______________________________________________ > The Gasification list has moved to > [email protected] - please update your email contacts to > reflect the change. > Please visit http://info.bioenergylists.org for more news on the list > move. > Thank you, > Gasification Administrator > _______________________________________________ The Gasification list has moved to [email protected] - please update your email contacts to reflect the change. 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