Correct drier sizing?

[monkey spanners]

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 :confused:

[The Viking]

Well,
If in doubt read the manual...

http://www.ra.danfoss.com/TechnicalInfo/Literature/Manuals/01/DKRCCPBEB0B202_dila.pdf
(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...

[install monkey]

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!

[monkey spanners]

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 :D

[mikeref]

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?

[monkey spanners]

It'll have four txv's feeding four 5/8" copper coils in the ice bank.

[mikeref]

Bump the liquid line to 5/8 Jon. 20m pipe run? 10m there and 10m back, or 20m from condensing unit to evap?

[monkey spanners]

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... :)

[mad fridgie]

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)

[mikeref]

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:eek: