LPG cartridge cooling

[Fred Graham 1Participant @fredgraham1]

Hi Folks,

Peter Arnott  wrote a series in Model Boats on building a 4 cylinder steam engine and associated plant in 1993.

In the section on boiler firing, he described the making of a tank with two valves. One was a starting valve which drew in gas and the other was a running valve which when opened after the burner had been heated drew neat liquid gas into the burner. He used a Taymar burner which had the reference LFB900 and LT2900 both of which embodied anti flare characteristics.

I have been unable to obtain either of these burners and wondered if anyone else has experimented with this way of firing a steam boiler using neat liquid gas.

It is necessary to vaporise the liquid so that it will burn or it will flare up with a very large flame which is not desirable.

The reason for drawing neat liquid is that the ‘cooling of the canister’ phenomenon with the attendent reduction in gas in the combustion chamber, is much reduced or even eliminated. I have not found any other articles which describe this design but it seems to me that it will be of interest to many LPG steamers who put up with this problem when running their boats.

If anyone has made such atank and burner and can tell me about their experiences I would be most grateful. I have up to date used petrol/parafin blowlamps based on AA Rayman designs which have always proved satisfactory if less convenient.

Thanks, Fred Graham

[Fred Graham 1Participant @fredgraham1]

How to utilise the liquid not the gas

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