ISO 10211-2017 PDF
Name in English:
St ISO 10211-2017
Name in Russian:
Ст ISO 10211-2017
Original standard ISO 10211-2017 in PDF full version. Additional info + preview on request
Full title and description
ISO 10211:2017 — Thermal bridges in building construction — Heat flows and surface temperatures — Detailed calculations. Specifies detailed two‑ and three‑dimensional geometrical and thermal modelling for numerical calculation of heat flows and minimum surface temperatures in building components and junctions (thermal bridges).
Abstract
ISO 10211:2017 defines the geometrical models, boundary conditions, material values and computational requirements for high‑accuracy steady‑state calculations of heat flow and surface temperatures at thermal bridges. The standard supports determination of linear and point thermal transmittances and surface temperature factors to assess overall heat losses and the risk of surface condensation. It assumes temperature‑independent physical properties and no internal heat sources within the modeled element.
General information
- Status: Published
- Publication date: 21 June 2017
- Publisher: International Organization for Standardization (ISO)
- ICS / categories: 91.120.10 (Thermal insulation of buildings)
- Edition / version: Edition 2 (2017)
- Number of pages: 55
Scope
The standard sets out specifications for two‑dimensional and three‑dimensional models of thermal bridges used in numerical (steady‑state) calculations to: (a) compute heat flows for assessing overall heat loss of a building or part of it, and (b) compute minimum surface temperatures to assess risk of surface condensation. It defines model boundaries and subdivisions, thermal boundary conditions, required material and thermal values, and the assumptions under which calculations are performed. ISO 10211:2017 can also be used to derive linear (ψ) and point thermal transmittances and surface temperature factors.
Key topics and requirements
- Definitions and requirements for 2D and 3D geometrical models of thermal bridges.
- Specification of thermal boundary conditions and subdivisions of the computational domain.
- Numerical calculation procedures for heat flows (steady‑state) and minimum surface temperatures.
- Derivation of linear (ψ) and point thermal transmittances and surface temperature factors.
- Assumptions: material properties independent of temperature; no internal heat sources in the element.
- Precision and modelling criteria to achieve repeatable, high‑accuracy results suitable for energy performance and condensation risk assessment.
- References to related hygrothermal and material property standards used as normative inputs.
Typical use and users
Used by building physicists, energy assessors, thermal and HVAC engineers, façade and detail designers, researchers, certification bodies and regulatory authorities. Typical uses include calculating psi‑values for energy performance, evaluating heat loss through junctions, assessing condensation risk at internal surfaces, validating thermal simulation tools, and supporting compliance with energy codes and building performance regulations.
Related standards
Normative and related documents commonly used with ISO 10211 include ISO 13370 (heat transfer via the ground), ISO 10456 (hygrothermal properties and tabulated design values), ISO 13788 (internal surface temperature to avoid condensation), and other EPB (energy performance of buildings) standards such as ISO 52000 series. National and regional adoptions include EN ISO 10211:2017 / BS EN ISO 10211:2017.
Keywords
thermal bridge, thermal bridging, heat flow, surface temperature, linear thermal transmittance, point thermal transmittance, psi‑value, U‑value, condensation risk, 2D model, 3D model, steady‑state calculation, building physics.
FAQ
Q: What is this standard?
A: ISO 10211:2017 is an international standard specifying detailed numerical modelling methods for thermal bridges to calculate heat flows and minimum surface temperatures.
Q: What does it cover?
A: It covers the geometrical models (2D and 3D), boundary conditions, material values and calculation requirements needed to compute steady‑state heat flows, minimum surface temperatures, linear and point thermal transmittances, and surface temperature factors for building junctions and details.
Q: Who typically uses it?
A: Building physicists, thermal modelers, HVAC and façade engineers, energy assessors, researchers, and regulators use it for energy performance calculations, design optimization and condensation risk assessment.
Q: Is it current or superseded?
A: ISO 10211:2017 is the second edition (published 21 June 2017) and replaced the 2007 edition. As the 2017 edition remains the published International Standard, it is the current edition unless superseded by a later revision after its regular review cycle.
Q: Is it part of a series?
A: Yes — it forms part of the suite of standards addressing energy performance of buildings and thermal insulation (EPB family) and is linked to related ISO standards (for example ISO 13370, ISO 10456 and ISO 13788) and regional adoptions such as EN ISO 10211:2017.
Q: What are the key keywords?
A: Thermal bridge, heat flow, surface temperature, linear transmittance (psi), point transmittance, condensation, 2D/3D modelling, steady‑state calculation.