gas pipe volume

[leakylea]

Can any body give me a link to gas pipe volume calculation thanks

 

[Killy Bing]

If you'd put it in the private forum then sure....

you'll have it in your books??

 

[leakylea]

not been on for a while whats the private forum about

 

[kirkgas]

Leakylea, are you gas qualified or training to do gas exams? Your question doesn't sound right,

 

[Ermintrude]

It's pretty basic maths for a tube .

 

[Crinkmeister]

pi r squared h

 

[mountainman]

pi r squared h

What if the pipe is level?

 

[Crinkmeister]

pi r squared l :smug:

 

[mountainman]

pi r squared l :smug:

Smarty pants :-D

 

[AWheating]

its called .............. download the app and use your brain cells for reading Nuts.

if you can call it reading

 

[Reg Man]

pi= 3.142 .......Radius/squared x length. Useful charts in any gas study notes or books or the ACS assessments.

 

[kirkgas]

Although he asked about pipe volume, I bet he's on about IV/PV stuff and flow rates, but if he doesn't come back we will never know haha

 

[wetdrip]

I like this one:
Determine the Tobacco Volume for Virtually any Pipe

 

[Killy Bing]

.......open forum...

 

[Ermintrude]

It's basic mathematics nothing to do with gas really ?

 

[Ray Stafford]

Calculating the volume of a cylinder/tube used to be taught in primary school. I wonder if it still is?

 

[Killy Bing]

Private then could post a table.

 

[Crinkmeister]

I'm guessing leakylea's question involves something that us amateurs aren't supposed to know!

I wonder if he knows how to work out how long it takes 3 men to fill a 6 foot bath with only 1 tap if it takes 2 men 3 days to dig a hole 4 foot deep?

 

[Ermintrude]

But why would DIY want to know volume? We all know in DIY land a 15mm supply is fine for any appliance?

 

[snowhead]

I wonder if he knows how to work out how long it takes 3 men to fill a 6 foot bath with only 1 tap if it takes 2 men 3 days to dig a hole 4 foot deep?

42.,.

 

[leakylea]

42.,.

I came across a large private house with two Worcester 28rsf boilers one 30 kw ideal mexico a large gas AGA along with two cookers a hob and two gas fires. These were fed by a g10 meter. As we all know there is a limit to the total volume of a system for a domestic gassafe engineer and a g10 takes up quite a good proportion of your volume allowance I had measured all the pipework mainly 28 and 22mm and simply wanted a quick trick for volume calcs. its nearly that time for my ACS updates, in the five years since my last ACS I have volume calc once before, although with the rise in boiler outputs and the amount of 28mm required after pipe sizing it may well be a more regular calculation. after 19 replies still not clear what the private room is. I am a guy trying to do the correct job in a professional way some of the replies let the site down or yourselves I am not sure. If my requirements were not clear just ask for clarity. people suggesting they new or thought what I might of meant or that I am a DIYer simply waste energy and are the reason I rarely use the site the job by the way was completed correctly thanks girls

 

[Atouchofgas]

http://www.ukplumbersforums.co.uk/g...ncement-how-gain-access-private-gas-safe.html
This is how we can answer this question

 

[Dotty]

Thread moved.

NOW you can answer him!

 

[kirkgas]

To calculate the IV of an installation it's not so much the formula you need but the tables containing the IV of each pipe size/material and the meters, of course you still need the formula but it's easy:
Split the installation into pipe lengths for each diameter then multiply the running length by the volume per metre from the table eg (all volumes are per linear m for copper)
15mm is 0.00014
22mm is 0.00032
28mm is 0.00054
35mm is 0.00084
Once you have added all the pipe lengths up you then multiply the total by 1.1 (to add 10% which is an allowance for fittings! it's the same allowance for every install)
You then add the IV of the specific meter (info taken from another table)
Eg U16 is 0.025
The total is the IV of the installation and needs to be under 0.035m3 to be worked on by a domestic engineer
The next step would be to calculate the PV (purge volume) this is simply done by calculating the IV as above then multiplying the answer by 1.5

 

[AlexGas]

To calculate the IV of an installation it's not so much the formula you need but the tables containing the IV of each pipe size/material and the meters, of course you still need the formula but it's easy:
Split the installation into pipe lengths for each diameter then multiply the running length by the volume per metre from the table eg (all volumes are per linear m for copper)
15mm is 0.00014
22mm is 0.00032
28mm is 0.00054
35mm is 0.00084
Once you have added all the pipe lengths up you then multiply the total by 1.1 (to add 10% which is an allowance for fittings! it's the same allowance for every install)
You then add the IV of the specific meter (info taken from another table)
Eg U16 is 0.025
The total is the IV of the installation and needs to be under 0.035m3 to be worked on by a domestic engineer
The next step would be to calculate the PV (purge volume) this is simply done by calculating the IV as above then multiplying the answer by 1.5

Spot on!

And the total PV (PV[SUB]t[/SUB])
PV[SUB]t [/SUB]= PV[SUB]m [/SUB]+ 1.5 (IV[SUB]p [/SUB]+ IV[SUB]f[/SUB])
PV of U16 is 0.03 m[SUP]3[/SUP]

 

[AlexGas]

If IV exceeds 0.02 m3,the purged mixture shall be ignited as soon as possible at an open burner or at a temporarily-installed burner.

If IV does not exceed 0.02 m3, the purging procedures may be applied without attempting to light the purged mixture at any stage, provided the area into which the gas is being purged is well ventilated, for example with windows and doors.

IGE/UP/1B Edition 2.

 

[leakylea]

thankyou thankyou thank you !