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Information Center > Buying Guides > Cooling Unit Buying Guides > 

Duct Heat Loss: 8" Ducting FRONT

CellarPro Wine Cellar Buying Guide—Front Duct Heat Loss 8" BTUH Adjustment for 55°1

Total Linear Feet of Ducting (8" Diameter / R6 Insulation3)

Ambient2 Temperature

20'

 

40'

 

60'

 

80'

 

100'

60°F

70   140   209   279   349

65°F

105   209   314   419   524

70°F

140   279   419   559   698

75°F

175   349   524   698   873

80°F

209   419   628   838   1047

85°F

244   489   733   977   1222

90°F

279   559   838   1117   1396

95°F

314   628   942   1257   1571

If you will be ducting the cold air supply and return air to and from a wine cellar, the "heat loss" through the ducting must be considered when sizing the cooling unit. This table calculates the heat loss given: 1) The ambient temperature where the ducting is located, 2) Total length of the ducting, assuming R6 insulation and wine cellar temperature at 55°F. When calculating the thermal load of your wine cellar in a front-ducted application, always consider the BTUH from the table above, and add it to the box load from our other tables.

(1) The table calculates the additional BTUH to be added to box load for the wine cellar, assuming R6 insulation on the ducting and 55°F temperature inside the cellar.

(2) Select the BTUH based on the ambient temperature in the area through which the ducting will be located.

(3) Select the BTUH based on the TOTAL linear feet of ducting (ie add the linear feet for both the supply and return air to/from the wine cellar. It is not necessary to add the linear feet, if any, from ducting the rear (ie hot air supply and return) of the cooling unit.