Doug,
I have seen photos on your website of multi-engine operation driving a central shaft to a single generator. So I know you have done it. We have a small design that goes nominally up to 40kW as this is the largest petrol engine we can reasonably find - 7 litre V8. I guess putting two of them in parallel would be manageable as well. I would be squeamish about the start up though. Tom, You mention an instrument to measure the heating value. Can you elaborate as I can see it being a fantastic tool. Is it an inline sensor such as a lambda sensor? Kind regards Rex Rex Zietsman Principal Consultant Pr Eng, BSc Eng (chem), MBA Mobile: +27 82 457 7311 Fax: +27 86 726 7028 Email: <mailto:[email protected]> [email protected] Website: <http://rex370.wix.com/whitfieldconsult> http://rex370.wix.com/whitfieldconsult From: [email protected] [mailto:[email protected]] Sent: 31 March 2015 08:46 PM To: [email protected] Subject: Re: [Gasification] Two Engines One Gasifier It is not a problem to fuel two engines off of one gasifier. It would be similar to that of fueling two engines on one natural gas feed line. Several steps make it easier, to measure the gas heating value continuously which can be done relatively inexpensively less than $300-500, and to maintain a fixed gas pressure in the gas line from which the gas is supplied to the engines. Sincerely, Leland T. "Tom" Taylor Thermogenics Inc. -----Original Message----- From: Doug Williams <[email protected] <mailto:[email protected]> > To: Discussion of biomass pyrolysis and gasification <[email protected] <mailto:[email protected]> > Sent: Sun, Mar 29, 2015 9:30 pm Subject: Re: [Gasification] Two Engines One Gasifier Hi Jeff, The easiest way is to set up a controllable blower on the air intake of the gasifier. You then have a control ball valve to both engines (hopefully the same type and size). The fan cannot blow more than is let out through the valves, but should blow enough to start each engine on no load. It takes a bit of fiddling to get the first start up sorted, but then turn off the fan, open the valves fully, and apply the load to the max. The gasifier should be able to run only one engine if the load drops below the max output of just one engine, so turn one engine off. If you find the oxidation temperature and colour dropping down to below a healthy incandescence on the one engine, you will need to increase the air velocity by using a slightly smaller air nozzle bore size. Hope this may be of some assistance. Doug Williams, Fluidyne. On Sun, 29 Mar 2015 20:47:47 -0400 Jeff Davis <[email protected] <mailto:[email protected]> > wrote: > Dear List, > > Is it practical to fuel two engines with one gas producer? I think a check > valve in each fuel line would be needed but would it be a problem to get > the second engine running? My system would consist of a charcoal gas > producer with two 6.5hp engines. > > Thanks, > Jeff > > ______________________________________________ > "Once an owner has got used to charcoal gas he will never revert to the > more expensive fuels", Geo Bray -- Doug Williams <[email protected] <mailto:[email protected]> > _______________________________________________ Gasification mailing list to Send a Message to the list, use the email address [email protected] <mailto:[email protected]> to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenerg ylists.org for more Gasifiers, News and Information see our web site: http://gasifiers.bioenergylists.org/ --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com
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