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Pete
 
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Default LPG - Calculating minimum pipe size required to supply a gas fire

Hi.

I am interesting in installing an open gas fire.

I already have a half-inch gas pipe which supplies LPG to a gas heating
stove in an adjacent room. So I was thinking that a T-junction in this
pipe, enabling the addition of a second pipe through the wall to the
neighbouring room, might do the trick. The question is, how do I
calculate whether the gas flow will be sufficient to run both the
existing gas stove and the new open fire?

The specs. are;

Gas supply source - 2 tonne cylindricat gas tank
Existing supply pipe - 1/2 inch copper pipe
Existing gas stove - maximum of 4.5 kilowatts input
New open gas fire - maximum of 32 kilowatts input


The input figure (32 kilowatts) for the new open gas fire may seem
excessive, but it is correct - manufacturer's figures.

Can anyone tell me if the existing 1/2 inch supply pipe is large
enough? If so, can you advise the method of calculation so that I can
rework the figures for alternative fires or stoves?

Thanks for any advice.