View Full Version : Liquid line sizing
wolfied
02-07-2009, 06:04 PM
Hello people,
I'm very new to this forum. Just signed up a few minutes ago, tough ;)
I have a question. I have an evaporator with 8.5 kW and I want to determine it's in and out manifolds/tubes. How can I do that ? I know the mass flow (0,1026 kh/second) using R404 A.
Any recommendations ? Please help people.
nike123
02-07-2009, 07:05 PM
http://www.mediafire.com/?g24ywigumyn
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wolfied
02-07-2009, 08:09 PM
Thanks nike, I hope it'll help me. If I had further questions, may I ask you ?
waisk
15-07-2009, 11:49 PM
Hi Nike, do you have any book on designning the air cooled condenser?
wolfied
16-07-2009, 06:22 AM
@waisk; do you mean it for line sizing ?
Anything about air cooled condensers would also help me. Nike123, please be generous once again and share your informations with us.
Thanks all, especially Nike..
nike123
16-07-2009, 08:36 PM
Hi Nike, do you have any book on designning the air cooled condenser?
Sorry, no!............
nike123
16-07-2009, 08:39 PM
Thanks nike, I hope it'll help me. If I had further questions, may I ask you ?
Your questions are welcome and I will help at best I could, but I am not design engineer.
But, I am sure that many members hare are also able and wiling to help you.
D.D.KORANNE
17-07-2009, 08:05 AM
What do you mean by designing a condenser ?
First get the kw rating of condenser right & approach a manufacturer for the rest . Here is how you can size a condenser :
Condenser thr / capacity =
cooling load in kw + kw rating of motor + 10 to 20% for air-conditioning or plus temp jobs .
For a low temp jobs , take a cut off suction saturation temp & find out the motor kw .add to the cooling load at design cond .
Example:
Evap temp : (-35) deg c, condensing 35 deg c
refrigerant : R-404a
cooling load : 30 kw
##find out the compressor power requd at say -20 deg c (assuming the evap temp to rise on a fresh start or after defrost cycle )
add up the power ## to the cooling load in kw ( 30 kw in this example) = condenser capacity
shaman
27-12-2009, 10:33 AM
nice info. Keep it up
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