Could you give details of the system please Geoff. Makes and models of components, batteries etc and perhaps the costs. I'm sure a lot of people would be interested.
Max Kennedy ________________________________ From: Geoff Thomas IMAP <[email protected]> To: [email protected] Sent: Thu, November 18, 2010 8:05:46 PM Subject: Re: [Gasification] Gasification Digest, Vol 53, Issue 1 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
