Refrigerant distributors
Refrigerant distributors
(OP)
Hi there
Hope everybody is fine !
Please, I'd need your help as follows
I have been asked to calculate the pressure drop in a refrigerant distributor.
From manufacturers' catalogues, I assume this value is around 14 PSI.
Nonetheless, I'd like to know if anybody could provide me a literature reference in order to find a more specific way to calculate this pressure drop
Please, can anybody help me ?
Thanks in advance !
Hope everybody is fine !
Please, I'd need your help as follows
I have been asked to calculate the pressure drop in a refrigerant distributor.
From manufacturers' catalogues, I assume this value is around 14 PSI.
Nonetheless, I'd like to know if anybody could provide me a literature reference in order to find a more specific way to calculate this pressure drop
Please, can anybody help me ?
Thanks in advance !





RE: Refrigerant distributors
RE: Refrigerant distributors
many thanks for your answer.
Indeed I tried to measure it, but I got really lots of problems.
I have been explained from who is more expert than me that this measurement is not so precise and stable, so that this is not unfortunately a good solution.
This is the reason why I am looking for some literature data.
Regards
RE: Refrigerant distributors
RE: Refrigerant distributors
RE: Refrigerant distributors
I don't know how manufacturer measures pressure drop, or better, according to what they claim the specified pressure drop.
I was wondering indeed if they have a theoretical method
RE: Refrigerant distributors
it is very proprietary since they need to ensure the oil returns to the compressor.
If you just want to calculate pressure drop for a homework, use EES
If this is an existing system, measuring is the way to go. Yes it will fluctuate since with different operating conditions pressure and temps and flowrates and viscosity will change. And if you have multiple or variable speed compressors, even more.
RE: Refrigerant distributors
Many thanks
You got the point in your answer
Indeed I can utilize EES, but my question is: which formulas shall I implement in calculation ?
Is there a literature model I can utilize ?
I am not able to find it in literature.
thanks
RE: Refrigerant distributors
I'd wager you haven't found a "literature model" because there isn't one. Every distributor model/design is going to have different equations for pressure drop through them.
Basically, you need to know the tube/pipe configuration and sizes within the distributor. You are going to have to build a model to calculate the pressure through each segment. Then calculate for each path.