new gas supply

[TGor]

I am sorry but, you are not correct. In ANY gas system, domestic or commercial, pipe sizing is everything. In this case you may possibly be able to get the gas supplier to give you slightly higher pressure at the meter, but only up to 23mbar. In a commercial system once the starting pressure is over 23mbar you are allowed, not "can afford", a pressure DROP of 10%. So a system that has a 53mbar pressure drop requires a start pressure of 530mbar (just over 0.5bar)

Aware that this is a Hypothetical .. but the gas pipe sizing tables I have used, particularly in the US, allow pressure drops of well over 50% on medium and high pressure natural gas lines .. obviously your experience is different.. Not sure why design should be restricted by imposing 10% in this country though is there a particular reason for this??

 

[pcp]

Firstly many thanks to all who have contributed to this topic. Progress has been slow to get a responce from SGN regarding alternatives to original quote. they will run pipework to a remote meter but only in 32mm, they state that any pipe work they install must terminate at a meter, I was hoping they would terminate 63mm pipe at an ecv then an independant could connect from this to 180m pipe run/ laid by ourselves to a meter at the house. As the original quote from SGN was to run from the main in 63mm pipe to metrer position in house I assume any pressure drop would have been calculated for, as an hourly load of 60k Wh being the based upon.
Awaiting quote from indepenant company for connection from remote meter, hoping they will resolve all issues regarding pressure, if not looks like oil is next best bet.
Again many thanks to all.

 

[Joncpi]

SGN do not have to abide by the 1.0mbar pressure drop or the 10% rule as they are "before the meter" different rules apply. Their supply pressure is likely to be between 75mbar and 2.0bar. Depends on the main pressure in the road. It could be lower, but they will still ensure there is sufficient gas for what ever size of meter you need and that this can supply the maximum load you need.

 

[grahamgas]

Have you got room for a bulk lpg storage tank?
If so then that is what I would look at first, then the ashp or gshp option.

Graham

 

[Joncpi]

Aware that this is a Hypothetical .. but the gas pipe sizing tables I have used, particularly in the US, allow pressure drops of well over 50% on medium and high pressure natural gas lines .. obviously your experience is different.. Not sure why design should be restricted by imposing 10% in this country though is there a particular reason for this??

IGE/UP2 codes, Testing and Purging, section 4.4.4 It actually says anything over 21mbar is allowed a 10% drop. However I always used 23mbar as a cut off point to allow for a margin of fluctuation in the gas supply pressure. Also I believe there is talk of a change to this ruling of 10%, but nothing definite yet as far as I know.