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ISO 10211:2017 Thermal bridges in building construction - Heat flows and surface temperatures - Detailed calculations >
ISO 10211:2017 Thermal bridges in building construction - Heat flows and surface temperatures - Detailed calculations, 2017
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Symbols and subscripts
- 4.1 Symbols
- 4.2 Subscripts
- 5 Description of the method
- 5.1 Output
- 5.2 General description
- 6 Output data and input data
- 6.1 Output data
- 6.2 Calculation time intervals
- 6.3 Input data
- 7 Modelling of the construction
- 7.1 Dimension systems
- 7.2 Rules for modelling
- 7.2.1 General
- 7.2.2 Cut-off planes for a 3-D geometrical model for calculation of total heat flow and/or surface temperatures
- 7.2.3 Cut-off planes for a 2-D geometrical model
- 7.2.4 Cut-off planes in the ground
- 7.2.5 Periodic heat flows via the ground
- 7.2.6 Adjustments to dimensions
- 7.2.7 Auxiliary planes
- 7.2.8 Quasi-homogeneous layers and materials
- 7.3 Conditions for simplifying the geometrical model
- 7.3.1 General
- 7.3.2 Conditions for adjusting dimensions to simplify the geometrical model
- 7.3.3 Conditions for using quasi-homogeneous material layers to simplify the geometrical model
- 8 Input data specifications
- 8.1 General
- 8.2 Thermal conductivities of materials
- 8.3 Surface resistances
- 8.4 Boundary temperatures
- 8.5 Thermal conductivity of quasi-homogeneous layers
- 8.6 Equivalent thermal conductivity of air cavities
- 8.7 Determining the temperature in an adjacent unheated room
- 9 Calculation method
- 9.1 Solution technique
- 9.2 Calculation rules
- 9.2.1 Heat flows between material cells and adjacent environment
- 9.2.2 Heat flows at cut-off planes
- 9.2.3 Solution of the formulae
- 9.2.4 Calculation of the temperature distribution
- 10 Determination of thermal coupling coefficients and heat flow rate from 3-D calculations
- 10.1 Two boundary temperatures, unpartitioned model
- 10.2 Two boundary temperatures, partitioned model
- 10.3 More than two boundary temperatures
- 11 Calculations using linear and point thermal transmittances from 3-D calculations
- 11.1 Calculation of thermal coupling coefficient
- 11.2 Calculation of linear and point thermal transmittances
- 12 Determination of thermal coupling coefficient, heat flow rate and linear thermal transmittance from 2-D calculations
- 12.1 Two boundary temperatures
- 12.2 More than two boundary temperatures
- 12.3 Determination of the linear thermal transmittance
- 12.4 Determination of the linear thermal transmittance for wall/floor junctions
- 12.4.1 All cases
- 12.4.2 Option A
- 12.4.3 Option B
- 12.5 Determination of the external periodic heat transfer coefficient for ground floors
- 13 Determination of the temperature at the internal surface
- 13.1 Determination of the temperature at the internal surface from 3-D calculations
- 13.1.1 Two boundary temperatures
- 13.1.2 More than two boundary temperatures
- 13.2 Determination of the temperature at the internal surface from 2-D calculations
- 13.2.1 Two boundary temperatures
- 13.2.2 Three boundary temperatures
- 14 Report
- 14.1 Input data
- 14.2 Output data
- 14.2.1 General
- 14.2.2 Calculation of the heat transmission using the thermal coupling coefficient
- 14.2.3 Calculation of the surface temperatures using weighting factors
- 14.2.4 Additional output data
- 14.2.5 Estimate of error
- Annex A (normative) Input and method selection data sheet — Template
- Annex B (informative) Input and method selection data sheet — Default choices
- Annex C (normative) Validation of calculation methods
- Annex D (normative) Examples of the determination of the linear and point thermal transmittances
- Annex E (normative) Determination of values of thermal coupling coefficient and temperature weighting factor for more than two boundary temperatures
- Bibliography [Go to Page]