Pipe Sizing

[dallan]

I have found a formula in a book for calculating the size of pipes and I have a couple of queries.

m=Qo/dh kg/s
then
V=mv
then
A=V/U m2

My main query relates to calculating flowrates for each section. At which point on the log chart do I obtain the specific volume for the liquid line, the suction line etc.

And probably more importantly does the formula seem accurate.

[Elton]

I am looking for formula or a chart for pipe sizeing on Air-conditioning and refrigeration lines.

[Elton]

Can you please be more in detail.

thank, You

[DTLarca]

You are right - here are your formulaa expanded with units for units analysis - but you still need to know exactly what velocities suit you.

[lana]

Hi there,

Check Mcquay site and download their piping-guide. It's very helpful and practical.

Cheers

[MilosBog]

Yap, the best thing for a refrigerant piping is McQuay manual...

[reinco]

I have found a formula in a book for calculating the size of pipes and I have a couple of queries.

m=Qo/dh kg/s
then
V=mv
then
A=V/U m2

My main query relates to calculating flowrates for each section. At which point on the log chart do I obtain the specific volume for the liquid line, the suction line etc.

And probably more importantly does the formula seem accurate.

I hope this attacment helps you...