# Heat loss due to linear thermal bridging

The heat loss due to linear thermal bridging (${\displaystyle H_{TB}}$) is a physical quantity used when calculating the energy performance of buildings. It appears in both United Kingdom[1] and Irish[2] methodologies.

## Calculation

The calculation of the heat loss due to linear thermal bridging is relatively simple, given by the formula below:[3]

${\displaystyle H_{TB}=y\sum A_{exp}}$

In the formula, ${\displaystyle y=0.08}$ if Accredited Construction details used, and ${\displaystyle y=0.15}$ otherwise, and ${\displaystyle \sum A_{exp}}$ is the sum of all the exposed areas of the building envelope,

## References

1. ^ "User Manual, JPA Designer" (PDF). JPA Technical Literature. Archived from the original (PDF) on 2007-10-08. Retrieved 2007-07-06. External link in |website= (help)
2. ^ "Dwelling Energy Assessment Procedure". Sustainable Energy Ireland. 2006. Archived from the original on 2007-09-28. Retrieved 2007-07-06.
3. ^ "Steel Construction and Thermal Bridging". British Constructional Steelwork Association. Retrieved 2007-07-06.
HTB

HTB may refer to:

Harold T. Barrett Junior High, in Beaver Bank, Nova Scotia, Canada

Havic: The Bothering, a collectible card game

Heat loss due to linear thermal bridging (HTB), used to calculate the energy performance of buildings

Hellertalbahn, a German railway company

Help to Buy, a UK scheme of financial assistance to buy property

Hierarchical token bucket, a computer networking algorithm

Holy Trinity Brompton, a church in London

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Index of physics articles (H)

The index of physics articles is split into multiple pages due to its size.