[Gasification] Two Engines One Gasifier

[Rex Zietsman]

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:rex at whitfieldfarm.co.za> rex at whitfieldfarm.co.za

Website:  <http://rex370.wix.com/whitfieldconsult>
http://rex370.wix.com/whitfieldconsult 

 

From: linvent at aol.com [mailto:linvent at aol.com] 
Sent: 31 March 2015 08:46 PM
To: gasification at lists.bioenergylists.org
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 <doug.williams.nz at gmail.com
<mailto:doug.williams.nz at gmail.com> >
To: Discussion of biomass pyrolysis and gasification
<gasification at lists.bioenergylists.org
<mailto:gasification at lists.bioenergylists.org> >
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 <jeffdavis0124 at gmail.com <mailto:jeffdavis0124 at gmail.com> >
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 <Doug.Williams.nz at gmail.com
<mailto:Doug.Williams.nz at gmail.com> > 


 


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