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Floor Heating Physics


It is extremely important where tubing is placed for best heat transfer.

 

Tubing must be placed in the upper 1/3 of the concrete slab. This will provide good heat transfer and even distribution across the floor.

 

Place tubing at 2'' slab thickness for minimum heat gradient and space the tubing at a distance to meet your BTU requirement.

 
 
  4'' Slab - 5/8'' Tubing OD  -  Floor Heat Transfer Test - Fluid 110 F

  Test #1

 

1'' Down        2'' Down        3'' Down

1'' down shows best heat transfer

The heat transfer upward is maximized and the heat transfer downward is minimized.

  Test #2

 10''         8''           6''

Center to Center Spacing

At 8'' spacing a even heat pattern
is achieved.

 
  6'' Slab - 7/8'' Tubing OD  -  Floor Heat Transfer Test - Fluid 110 F

  Test #1               

 10''         8''           6''

Center to Center Spacing

At 8'' spacing a even heat pattern
is achieved.
   

  Test #2

 

2'' Down        3'' Down        4'' Down

2'' down shows best heat transfer

The heat transfer upward is maximized and the heat transfer downward is minimized.

Last modified: 09/05/2008

     

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