Table of Contents

Foreword<br>Introduction<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Symbols and subscripts<br>5 Description of the method<br>6 Output data and input data<br>7 Modelling of the construction<br>8 Input data specifications<br>9 Calculation method<br>10 Determination of thermal coupling coefficients and heat<br>&nbsp;&nbsp;&nbsp;flow rate from 3-D calculations<br>11 Calculations using linear and point thermal transmittances<br>&nbsp;&nbsp;&nbsp;from 3-D calculations<br>12 Determination of thermal coupling coefficient, heat flow<br>&nbsp;&nbsp;&nbsp;rate and linear thermal transmittance from 2-D calculations<br>13 Determination of the temperature at the internal surface<br>14 Report<br>Annex A (normative) - Input and method selection data<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sheet - Template<br>Annex B (informative) - Input and method selection data<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sheet - Default choices<br>Annex C (normative) - Validation of calculation methods<br>Annex D (normative) - Examples of the determination of the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;linear and point thermal transmittances<br>Annex E (normative) - Determination of values of thermal<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;coupling coefficient and temperature weighting factor<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for more than two boundary temperatures<br>Bibliography

Abstract

Gives out the specifications for a three-dimensional and a two-dimensional geometrical model of a thermal bridge for the numerical calculation of: - heat flows, in order to assess the overall heat loss from a building or part of it, and - minimum surface temperatures, in order to assess the risk of surface condensation.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	British Standards Institution
Pages
ISBN
Committee	B/540/2
Supersedes	05/30134438 DC : DRAFT MAY 2005 15/30313349 DC : 0