Condensation

The condensation calculator makes it easy to determine the critical dewpoint temperature and the minimum product thickness to assist in preventing condensation forming in your structure. The calculator can be used for both building and HVAC applications

Simply enter the warm side temperature and warm side Relative Humidity then the cool side temperature of the structure you are insulating. Then enter the surface air film resistance (click the information icon for more information).

Select the Bradford product from the product drop down, and press calculate. The warm side dewpoint temperature and design product minimum thickness will be calculated from your requirements.

* Mandatory fields
Warm Side Temperature *
 °c
Warm Side Relative Humidity *
 %
Cool Side Temperature *
 °c
Rs Thermal Resistance of Foil *
 m².k/W 

Air film resistances (Rs)

The resistance values of surface air films decrease with increasing surface roughness, increasing air movement over the surface and increasing emittance (which is decreasing reflectance)

An approximation of Thermal resistance of Air films (Rs) is as follows:

Bradford Product *
Dewpoint Temperature (min) 0 °c
Design Product Minimum Thickness 0 mm
Note this is a simplified calculator to aid designers to check for condensation control. It does not take into consideration any thermal insulation provided by structure. For further information or detailed design information refer to respective Bradford design manuals.
 
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