Capillary tube Chart for Lenght vs Size

[Kwadneuf]

Hi all,

I got a situation where I need Capillary tubes of size: 0.094'' ID 15.75'' Lenght. Problem is, the manufacturer I deal with doesn't have this ID and could be three months before he can send me some.

I could get some 0.079 ID Cap tubes ( Closest I got on hand ) & I heard there were charts that could help me determine the right lenght to use. Where can I find those ?

It would be for R-22 @ 30 000BTU/Hr , 1 outdoor unit & 3 Indoor , Inverter Compressor. Do I have to get the same exact Capillaries or can I calculate equivalency with those 0.079 ID ones ?

I made the rule of three but really think it must be harder than that to find the equivalency.
Here's what it looks like..:

0.079 divided by 0.094 = 0.8404255
0.8404255 times 15.75 = 13.236701

So I would use a 13 7/16'' Lenght.

Waiting for your Expert advises ;)

Thanks,
Nice site BTW !

[Kwadneuf]

Attached is the Fluid diagram, I thought it might help.
I need the Caps# 3,4 & 5, those at the end of the condenser.

Thanks again !

[Brian_UK]

You could try the free calculation software from Danfoss, namely Dancap.

http://www.danfoss.com/BusinessAreas/RefrigerationAndAirConditioning/Product+Selection+Tools+Details/DanCap.htm

It may help.

edit: Just had a look at your diagram; those capillaries are part of the condenser unit, you do not have to add them to the system,

[tonyelian]

hi
try actrol capillary conversion chart

[lana]

Use this formula to convert the ID or length of a cap tube:


(L1/L2) = (D1/D2)^5.4


^ means to the power of

[Kwadneuf]

Thanks everyone !

Since I wasn't too sure about the 'to the power of' thing & didn't want to go through the Danfoss Registration ( maybe another time though ), I used the 'actrol capillary conversion chart' & it worked as a charm.

The exact dimensions were not there but I used the modifier of '0.095 to 0.08' ( 0.46 ) & applied it to my '0.094 to 0.079'. So I put 7 1/4 long of the 0.079 Capillary Tubes I had.

It may not be the exact precise theorical fit but has to be close enough.

Anyway, who cares about possessing THE perfect system as long as they got what they want & feel comfortable ..unless their a pain in the ass.. & we know there are some ;)

Thanks again,
I appreciate your quick answers, and they were all good ones so once again, Very nice site !