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dallan
11-01-2005, 11:42 PM
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
10-11-2010, 10:25 PM
I am looking for formula or a chart for pipe sizeing on Air-conditioning and refrigeration lines.

Elton
10-11-2010, 10:27 PM
Can you please be more in detail.

thank, You

DTLarca
10-11-2010, 11:24 PM
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
11-11-2010, 04:57 AM
Hi there,

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

Cheers

MilosBog
07-12-2010, 06:44 PM
Yap, the best thing for a refrigerant piping is McQuay manual...

reinco
16-12-2010, 09:39 PM
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...