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Thread: Correct drier sizing?
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02-01-2012, 08:32 PM #1
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Correct drier sizing?
Got a 20kw compressor reciever set and a wall mounted condenser to be connected to a 100kw ice builder on R404A to install, about 20m pipe run.
The drier (and liquid line) look a bit small to me so i'd be interested on what drier capacity you would expect or want fitted to such a system.
Cheers Jon
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02-01-2012, 08:47 PM #2
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Re: Correct drier sizing?
Well,
If in doubt read the manual...
http://www.ra.danfoss.com/TechnicalInfo/Literature/Manuals/01/DKRCCPBEB0B202_dila.pdf
The above is Danfoss' blurb for their DML range and allegedly even an 085 can in theory handle 20kw when on R404...
But yes, it would be small. Personally I prefer larger...
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02-01-2012, 08:48 PM #3
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Re: Correct drier sizing?
depends on how much crap your going to leave in the system !!- go for the biggest one in the van so you can charge more!
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02-01-2012, 09:12 PM #4
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Re: Correct drier sizing?
Thanks for the link, will have a look
Its got an 084 on it at the moment but the last system i did with the same capacity came with 305's and 5/8" liquid lines.
Tempted to put a shell and core drier on it, give me something to do when its due a service
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02-01-2012, 10:37 PM #5
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Re: Correct drier sizing?
084 is a toy for that size system Jon. 304 would be the smallest i'd use if staying with 1/2". How many TX's are going to be fitted?
To the optimist, the glass is half full. To the pessimist, the glass is half empty.
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02-01-2012, 11:14 PM #6
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Re: Correct drier sizing?
It'll have four txv's feeding four 5/8" copper coils in the ice bank.
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02-01-2012, 11:20 PM #7
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Re: Correct drier sizing?
Bump the liquid line to 5/8 Jon. 20m pipe run? 10m there and 10m back, or 20m from condensing unit to evap?
To the optimist, the glass is half full. To the pessimist, the glass is half empty.
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02-01-2012, 11:47 PM #8
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Re: Correct drier sizing?
Its about 15/20m one way, with a 2m lift and 3m drop, thinking of using 1 3/8" and 5/8", got to have a word with tech peeps at the wholesalers, i'm more monkey see monkey do, than monkey knows what he's doing...
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03-01-2012, 12:01 AM #9
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Re: Correct drier sizing?
You have 2 things to consider.
1; pressured drop through the drier. (This related to your Kw or normal flow)
2; cleaning/drying properties (this related to how much refrigerant in the system)
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03-01-2012, 12:18 AM #10
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Re: Correct drier sizing?
Hope your reciever is big enough to handle a pumpdown. Can't see how a 1/2" pipe can supply 4 valves anyway, even if the pipe run was far less. reciever is probably 1/2" inlet/outlet and will be a chokepoint. No harm in double checking equipment specs. You will be up the proverbial creek if it don't perform
To the optimist, the glass is half full. To the pessimist, the glass is half empty.
