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abbasi
20-04-2004, 09:58 AM
Can any1 tell mec how to calculate the length and dia of capillary in refrigeration

chemi-cool
20-04-2004, 03:14 PM
this might help.

chemi

Abe
20-04-2004, 05:50 PM
Hi Chem

Thats the best info I have seen on cap tubes. Thx Chem

chemi-cool
20-04-2004, 07:02 PM
I think that frank pointed this link in the past.

I'm just collecting pdf's. got thousands of them.

chemi :)

abbasi
21-04-2004, 12:10 PM
this might help.

chemi

Way 2 go maite
Thanx :)

RogGoetsch
26-04-2004, 06:37 AM
Chemi, excellent cap tube reference.

One thing to note, the principle of a cap tube that differs somewhat from an orifice is that liquid flows through much easier than vapor. A correctly sized cap tube will be slightly larger than absolutely required. This is because the size of the charge is the ultimate limiting factor.

Another way of saying this is that in a properly sized captube system, adding excess refrigerant will flood back to the compressor NOT back up into the condenser. This is not to say you want to flood the compressor. You must limit the charge under design conditions so that this does not happen.

This will give you the optimum design with minimum charge, allow for rapid equalization during the off cycle (important for starting with low-torque designs) and minimize refrigerant in the crankcase at initial start-up.

(If you are designing a captube system for the first time, check with the compressor mfg for the maximum amount of refrigerant in the crankcase they will permit without voiding the warranty, because that is where it will be on initial start-up!)

Rog

Peter_1
26-04-2004, 07:16 AM
Unithé Hemétique has a selection CD for his compressors with an automatic selection of the capillary tubes.
Will try to post it somewhere.

peter

Attached an old schematic from UH I used many times in the past.
Is it readable /usefull?

abbasi
27-04-2004, 08:31 AM
this might help.

chemi

here are some stats given by danfoss about length of capillary tube

Do the two results(given in my attachment and one by chemicool) resemble

say for
FR11G (-10/5 C)

:confused:

chemi-cool
27-04-2004, 09:06 AM
send me a private massage with your email and I will send you a better one.
too big to post here.

chemi

benijoseph
20-06-2005, 07:02 PM
this might help.

chemi



EXCELLENT ----- CC

BENI JOSEPH

Crystal-426
19-06-2008, 02:56 PM
hello peter,
can you supply me such diagram for the refrigerant r134a? i am looking for it for a long time.
thank you very much!

Crystal

dpdhas
04-04-2009, 04:52 PM
corrct sizes of capillaries for deepfreezers