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The Electric Heater Specialists
HEATERS FOR EVERY APPLICATION

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Technical:  Guide for Heat Losses

Graph 1:  Losses from Uninsulated Metal Surfaces              

  Losses from Uninsulated Metal Surfaces

Curves "A" show heat losses from vertical surfaces of tanks, pipes, etc. and also top surface losses from a horizontal surface laid flat.
Curves "B" show average heat losses from top and bottom surfaces of a horizontal surface laid flat.
Curves "C" show heat losses from bottom surface of a horizontal surface laid flat.
All curves presuppose still air (approx. one foot per second) at 70°F.

Graph 2:  Losses from Open Hot Water Tanks

     Losses from Open Hot Water Tanks


Graph 3:  Losses from Molten Metal Surfaces

    Losses from Molten Metal Surfaces


Graph 4:  Losses through Insulated Walls (ovens, pipes, etc.)

   Losses through Insulated Walls


Graph 5:  Losses from Surfaces of Oil Baths

Losses from Surfaces of Oil Baths


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