Gas pipe size calculation

[Adam1312]

Hi all!

I am looking to see if anyone uses a good gas pipe size calculation app!

I have been been plumbing and installing gas for over 12 years so obviously I know how to work it out long hand, I just want to see if any of these apps are worth the money to save myself time over the year!

Thanks

 

[Dotty]

I always work it out longhand.

But then not many apps do commercial gas sizing!

 

[Adam1312]

Thanks for the reply!

I'm the same I do it longhand but just thought they might be one out there!

 

[Riley]

I like the GBgas.co.uk app works well once you get your head round the rubbishinstructions. I like longhand but sometimes if I'm just trying to show a customer why their gas is undersized it's a useful tool

 

[Riley]

I always work it out longhand.

But then not many apps do commercial gas sizing!

Are you commercial mate??

 

[Dotty]

Are you commercial mate??

Doesn't it show?

 

[Last Plumber]

Always the long way round !
Mear calculator !

Never been wrong in 28 years with those.
Some think they're old hat but I swear by em.

Pump sizes ( index circuit calcs).
Gas pipe sizes ( pressure drop )
Gallons per hour
Heat loss
Boiler size
All of it !
You need to use them along side a good brain and experience !

 

[Last Plumber]

Do I sound old ?

 

[ShaunCorbs]

Always the long way round !
Mear calculator !

Never been wrong in 28 years with those.
Some think they're old hat but I swear by em.

Pump sizes ( index circuit calcs).
Gas pipe sizes ( pressure drop )
Gallons per hour
Heat loss
Boiler size
All of it !
You need to use them along side a good brain and experience !

you still got the old calcs?

 

[Last Plumber]

Don't answer that

 

[ShaunCorbs]

Don't answer that

 

[Last Plumber]

Yes, how old you mean ?

 

[Last Plumber]

I'm still in BThus and Fahrenheit !
If that's old
And still measure in feet and inches

 

[Dotty]

Do I sound old ?

Very....

 

[Last Plumber]

Ha ha
Cheers !

 

[Last Plumber]

It's always been right.
Industrial commercial or domestic.

 

[tamz]

Always the long way round !
Mear calculator !

The blue one or the red one?

 

[Dotty]

I'm still in BThus and Fahrenheit !
If that's old
And still measure in feet and inches

I'm happy enough working in either imperial or metric. Can easily swap between the two. Except Fahrenheit. And pump pressure in psi does my head in!

 

[Dotty]

The blue one or the red one?

You been watching The Matrix again?

 

[tamz]

You been watching The Matrix again?

Lol. Red one is imperial blue metric and if you had been to school in the 60's you would understand fahrenheit but i admit although i know a boiler stat is 140 to 180 and 70º is pleasantly warm and some other stuff i've got to do the -32 x5 /8 thing as celcius is more in my head

 

[tamz]

Just learn the max flow rates for the pipe runs. Its only a couple of numbers but it saves you faffing about calculating anything. The numbers/tables are in your books but it is easy to remember a 30kw boiler will be fine on 20m (less fittings allowance) or 3m of 15mm.

Btw most apps use the equivalent length method of calculation which errs on the safe side as it is less than the tabulation method but it is all theory.

 

[Last Plumber]

The blue one or the red one?

The dark blue one, the red one and the turquoise one.

 

[Last Plumber]

I'm happy enough working in either imperial or metric. Can easily swap between the two. Except Fahrenheit. And pump pressure in psi does my head in!

I don't mind using Fahrenheit or Celsius cos i'm not as old as I sound but your right with the pump pressure. Always in Meters head or Kpa.

 

[Masood]

I always work it out longhand.

But then not many apps do commercial gas sizing!

Quite satisfying being able to do the calcs though...

 

[Last Plumber]

Who me ?

Yes

For my sins !