evap temps

[kc8939]

hi, i have a question about walkin cooler and walkin freezers
are all coolers set at 15 and what would freezers run at would this bearound -10 and suction psi would be 15 to 20 degrees below -10? thanks ken

[Edited by kc8939 on 06-30-2004 at 05:33 PM]

[Al 1076]

I have typically seen cooler evap temps at 25 degrees, and freezer evap temps between -15 to -20.

[rocket]

Subtract TD* from box temp and convert answer to pressure
using your PT chart

i.e. BOX @ 35 CLASS 2 = 10 TD (35 - 10 = 25) cooler
i.e. BOX @ 45 CLASS 3 = 20 TD (45 - 20 = 25) meat prep
i.e. BOX @ 45 CLASS 1 = 7 TD (45 - 7 = 38) flower box


TD* GUIDE - RECOMMENDED TEMPERATURE DIFFERENCES
CLASS 1 7-9 TD @ 90% RH,
Results in a minimum amount of moisture evaopration during,
storage. Includes vegetables,produce,flowers,and chill rooms,
CLASS 2 10-15 TD @ 80-85% RH,
Includes general storage and convience store coolers,packaged,
meats and vegetables and similar products.,
CLASS 3 12-16 TD @ 65-80 % RH,
Includes beer,wine,pharmaceuticals,potatoes,and onions,tough,
skin fruits such as melons and short term packaged products.,
CLASS 4 17-22 TD @ 50-65 % RH,
Includes prep and cutting rooms,beer warehouses,candy,film,
storage and loading docks.,

[rocket]

TD* GUIDE
these are for coolers

Freezers always use 10 TD

[icemeister]

Nicely done. That should be included in the "For Your Interest" section of this site.

[Edited by icemeister on 06-30-2004 at 09:07 PM]

[kc8939]

thanks for info it is nice too have a site that is so informative. ken