low gas inlet pressure? is this a major problem???

[ALEC1]

Joe, we have tables and calculations for that...of course it will make a difference...

 

[Razor900]

Worcester Bosch also say the pipe shoukd be a minimum of 22mm uninterrupted between the meter and the boiler...How many meters away is the meter...I reckon about 10m..

No they don't

 

[joe-90]

It doesn't make sense according the physics that I studied. If I replace half my garden hose with a bigger diameter it won't make hardly any difference to the water volume that comes out .

 

[steve32]

The friend who serviced it said it was a bit low but not to worry about it.

Your friend said not to worry, he is the pro that serviced it don't you trust him

 

[Dan Robinson]

Has anyone done the maths to see if a section of larger diameter pipe will make any realistic difference? Pressure has nothing to do with volume other than with a miniscule amount of friction.

It doesn't make sense according the physics that I studied. If I replace half my garden hose with a bigger diameter it won't make hardly any difference to the water volume that comes out .

Depends which half.


Come on mastermind - do the maths for us thickies.

 

[joe-90]

Consult your chart boyo.

 

[Dan Robinson]

Google not working for you tonight them?

 

[joe-90]

If you get a length electric cable and put 240 volts down it and then make half of it a double thickness, do you really think the voltage (pressure) will rise? It can carry more current (volume). Gas pipes follow the same laws of physics. They are universal laws.

 

[Razor900]

Dan you're not thinking this through dude. Using Joes brilliant idea could save the fire brigade millions on big, heavy, dangerous equipment!

Now wheres Alec gone so I can educate him?

 

[Dan Robinson]

Stop bullshltting Joe and work it out.

Just seen Razor's post...

 

[ALEC1]

whoops no they dont say that... i have just checked, I am sure they used to though..

 

[Razor900]

They did and still says it in the MI's so I can't give you too much stick

However..... September 2012 update


http://www.worcester-bosch.co.uk/ca...ing-for-greenstar-ri-and-i-system-boilers.pdf

 

[Iddy]

If you get a length electric cable and put 240 volts down it and then make half of it a double thickness, do you really think the voltage (pressure) will rise? It can carry more current (volume). Gas pipes follow the same laws of physics. They are universal laws.

The voltage won't rise above the supply voltage of course, but a thicker cable will allow more current to flow without as much voltage drop. Think about it thickie

 

[joe-90]

Stop bullshltting Joe and work it out.

Just seen Razor's post...

I don't need to. You have the charts because you are an RGI and they are usually illeiterate.

If it were a cable you would get a little less voltage drop - but not the sort of amount you are bandying about.

BTW if the kid with the hose replaced half of it with full size firemans hose - he would still get the same amount of water out. It's the PRESSURE behind the flow that counts - not the volume presented.

 

[ALEC1]

yeah well the ones I have just consulted must be the up to date ones....

Didn't think I was having a grey area.. perhaps they got too many complaints about ripping peoples houses to pieces!!!