[Gasification] Attn: Doug Williams Re: Air/gas ratios (was fireballs)

[Kevin Chisholm]

Dear Doug

I tried to e-mail you off line but the message was caught in your Spam 
Filter. Could you please e-mail me off line?

Thanks, and apologies to the List.

Kevin

----- Original Message ----- 
From: "Doug Williams" <Doug.Williams at orcon.net.nz>
To: <GASIFICATION at LISTSERV.REPP.ORG>; "AJH" <list at sylva.icuklive.co.uk>
Sent: Wednesday, September 06, 2006 6:05 PM
Subject: Re: [Gasification] Air/gas ratios (was fireballs)


>
> Hi Andrew,
>
> You compare:
>
>> OK but if you ran the same engine on natural gas and then made that
>> mixture wrong by a similar ratio how would it fair?
>
> Natural gas and LPG are much the same, and can handle a wider gas/air 
> ratio,
> than producer gas. It has to be said however, that all fuels have their
> prefered optimum sweet spot.
>
>>I run a vehicle on lpg and I don't get second chances if I foul up 
>>starting
>>that (truth be known if I have a hot stall I inevitably have to revert to
>>petrol
>> to get it running), I know the mixtures not quite right for hot
>> starting but it's the best I've been able to get.
>
> When I had my LPG system installed, it had a gas shot for starting (like a
> choke reaction) but although it was set up "correctly" according to the
> experts,
> the power was way off when hot. The trouble turned out to be the hot water
> supply to the vapouriser, making the gas to hot, so I just put a squeeze 
> on
> the hose to slow the amount of heating to the vapourizer. Believe it or 
> not,
> the same thing happens to engines on producer gas when you heat up the 
> gas,
> so the engine can get rid of the condensate from the cooling gas. Check 
> your
> hose configerations as a first step, you might be in the same circuit as 
> the
> car heater.
> Regards,
> Doug Williams.
>
>
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