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Thread: Capillary Sizing
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23-11-2010, 08:58 PM #1
Capillary Sizing
Could anyone please help regarding selecting a capillary tube for a single door commercial freezer using a Supco Bullet Restricto Capillary Kit?
The compressor is a Cubigel GP14FB 3/8 HP on R134A but Supco's selection chart does not include this size compressor. The condenser is fan cooled but the evaporator is without a fan.
I have attached Supco's sizing chart.
Any other suggestions to what the capillary size should be or how to size the capillary would be greatly appreciated!
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23-11-2010, 09:54 PM #2
Re: Capillary Sizing
Download Dancap from Danfoss and you can calculate just what you need.
Remember that most cap tube sizing is an experiment.
http://www.danfoss.com/BusinessAreas...ils/DanCap.htm
Also, download the specification of that compressor if you don't already have it.
http://www.hawco.co.uk/GP14FB-ECC-Cu...or_2246_p.aspxBrian - Newton Abbot, Devon, UK
Retired March 2015
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24-11-2010, 10:17 AM #3
Re: Capillary Sizing
let me know the test procedure to balance condenser water system for water cooled packages in a multy storied building please
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24-11-2010, 09:47 PM #4
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01-12-2010, 07:55 PM #5
Re: Capillary Sizing
Thanks for the advice Peter but I am not sure on finding some of the calculations needed with DanCap such as heat load of the system. I presume that the evaporating temp and the return gas temp will give the evaporator superheat differential??
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02-12-2010, 05:16 PM #6
Re: Capillary Sizing
hi
referring to tecumseh its 2 meter 0.036 internal diameter
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02-12-2010, 05:40 PM #7
Re: Capillary Sizing
I have always trusted to use the DANCAP program which Brian has prescribed above.
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22-06-2011, 11:36 AM #8
Re: Capillary Sizing
1.9m 0.042 for single feed evap on this comp
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22-06-2011, 07:00 PM #9
Re: Capillary Sizing
DanCap seems to be a good software, but could someone please let me know, how to estimate the heatload in a easy way for any specifik unit ? For example, it can be tricky to estimate the heat load for a bottle fridge when one wants to change the cap.tube. Kind regards / Tobias
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30-06-2011, 01:29 AM #10
Re: Capillary Sizing
Software or no software. The cap tube primary purpose is to meter the amount of refrigerant getting to a specific part of the refrigerant circuit. So what you need to know is how much flow through the original cap tube and match up a size and length that will do the same.
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