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In Physics, HTB is the heat loss due to linear thermal bridging when calculating the energy performance of buildings. It appears in both United Kingdom[1] and Irish[2] methodolgies.

Calculation of HTB


The calculation of the heat loss due to linear thermal bridging is relatively simple, given by the formula below:

  • HTB = y . ΣAexp


  • y = 0.08 if Accredited Construction details used; y = 0.15 otherwise
  • ΣAexp is the sum of all the exposed areas of the building envelope


  1. ^ User Manual, JPA Designer. JPA Technical Literature. Retrieved on 2007-07-06.
  2. ^ Dwelling Energy Assessment Procedure. Sustainable Energy Ireland (2006). Retrieved on 2007-07-06.
  3. ^ Steel Construction and Thermal Bridging. British Construction Steelwork Association. Retrieved on 2007-07-06.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "HTB". A list of authors is available in Wikipedia.
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