View Full Version : Refrigerant Flow Rates
ROSS VAN DUGTER
07-03-2007, 04:51 AM
Can any one provide refrigerant flow rates for
R134a & R404A (SI units preferably)
i.e for refrigeration pipe sizing
Or general info for refrigeration Pipe Sizing
Thanks Ross V
Josip
07-03-2007, 07:39 AM
Hi, Ross Van Dugter :)
Welcome to RE.
Can any one provide refrigerant flow rates for
R134a & R404A (SI units preferably)
i.e for refrigeration pipe sizing
Or general info for refrigeration Pipe Sizing
Thanks Ross V
I'm sure somebody will come with info you need.
Best regards, Josip :)
Brian_UK
07-03-2007, 08:02 PM
Hi Ross,
Try this pdf download from DuPont, it's a 161 page handbook..
http://www.suva.dupont.ca/pdf/RefrigPipingHandbook.pdf
Bones
08-03-2007, 12:06 PM
http://www.suva.dupont.ca/pdf/RefrigPipingHandbook.pdf
Brian_UK
08-03-2007, 10:26 PM
Thanks Bones for posting the correct URL.:o
I've amended mine now....
Bones
09-03-2007, 07:29 AM
no worries brian!
i clicked onto the click thinking it must of been a folder on there site... did a quick search at the error page for refrig piping etc, then seen the '.' and thought i bet its a PDF! and bingo hehe ;)
nh3simman
01-04-2007, 04:22 PM
Can any one provide refrigerant flow rates for
R134a & R404A (SI units preferably)
i.e for refrigeration pipe sizing
Or general info for refrigeration Pipe Sizing
Thanks Ross V
You ask initially about refrigerant flow rate. This is a function of the duty and the refrigerant only, not the line size.
The relationship is
Qe = mr x dh
Qe = cooling duty, kW
mr = refrigerant mass flow, kg/s
dh = refrigerating effect, kJ/kg
dh can be read directly off a MollierChart at the suction temperature.
Now that you have the flow needed to achieve the duty, you can choose a line size that satisfies the max pressure drop and min velocity criteria.
The other methods offered are easy to use since they give nomograms for quick lookup.
EngrinQatar
08-12-2007, 06:15 PM
ty for the link Bones
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