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Basement Heat Loss: Thermal Loads for Below-Grade Wine Cellars

Light grey is within entire 1800 series capacity, medium grey is 1800QT / 1800XT / 1800XTS Capacity, light blue 1800XT / 1800XTS, dark grey 1800XTS

CellarPro Cooling Systems—Below-Grade Thermal Loads

Two Scenarios at 55°F

1800XT BTUH 1456

1800XTS BTUH 1886

3200VS BTUH 3040

4200VS BTUH 3938

Cellar Size

 
Air
Temperature
 
Ground
Temperature
 Thermal Load (BTUH)
Scenario 1
2 Concrete Walls1
2 Interior Insulated Walls2


 Scenario 2
3 Concrete Walls1
1 Interior Insulated Walls2


100

Cubic Feet

75°F60°F973 958
77°F65°F10871106
80°F70°F12081260
80°F75°F13071399
Divider    

200

Cubic Feet

75°F60°F12041181
77°F65°F13801408
80°F70°F15701643
80°F75°F17211852
Divider    

300

Cubic Feet

75°F60°F14401411
77°F65°F16751711
80°F70°F19272022
80°F75°F21282298
Divider    

400

Cubic Feet

75°F60°F16011570
77°F65°F18731912
80°F70°F21672269
80°F75°F23992581
Divider    

500

Cubic Feet

75°F60°F18301794
77°F65°F21562201
80°F70°F25082626
80°F75°F27842994
Divider    

1000

Cubic Feet

75°F60°F28162761
77°F65°F33403408
80°F70°F3905(4087)
80°F75°F(4344)(4670)
 

We provide data for two scenarios:

  • Scenario 1: The cellar has two 6-inch concrete walls against grade + two insulated (R12) walls against temperature-controlled interior space.
  • Scenario 2: The cellar has three 6-inch concrete walls against grade + one insulated (R12) wall against temperature-controlled interior space.

The table is shaded to show which CellarPro refrigeration system will be required to maintain 55°F inside the wine cellar, using the following assumptions:

  • The GROUND temperature corresponds to the average earth temperature opposite the concrete walls.in the cellar. Please refer to our chart that depicts ground temperatures in various parts of the country, which can vary by 20-30 F depending on geography.
  • The AIR temperature correspond to the conditions in the temperature-controlled environment that is opposite the insulated wall(s) in the cellar.
  • The shading indicates the recommended cooling unit based on the calculated thermal load (refer to the shading at the top of the table).
  • A blue area with () indicates conditions that are beyond the capacity of our 4200 Series cooling units; therefore, our 6000S or 8000S split refrigeration system would be required.

The thermal loads above are calculated based on the R-Values discussed above. Lower R-Values in the cellar (eg from glass windows, doors or walls), uninsulated walls that are not fully below grade, and/or exposure to warmer air temperatures will increase the thermal load on the wine cellar. To be certain that the thermal load won't exceed the capacity of the cooling unit, email your wine cellar specifications to us and we'll be glad to assist you.