EN ISO 11855-2:2015

Foreword
Introduction
1Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Concept of the method to determine the
  heating and cooling capacity
6 Heat exchange coefficient between surface
  and space
7 Simplified calculation methods for determining
  heating and cooling capacity or surface temperature
8 Use of basic calculation programs
9 Calculation of the heating and cooling capacity
Annex A (normative) - Calculation of the heat flux
Annex B (normative) - General resistance method
Annex C (normative) - Pipes embedded in wooden
        construction
Annex D (normative) - Method for verification of FEM
        and FDM calculation programs
Annex E (normative) - Values for heat conductivity of
        materials and air layers
Bibliography

This European Standard is applicable to water based surface heating and cooling systems in residential, commercial and industrial buildings.The methods apply to systems integrated into the wall, floor or ceiling construction without any open air gaps. The methods do not apply to heated or chilled ceiling panels or beams.This standard provides steady-state calculation methods for determination of the heating and cooling capacity (part 2).This standard applies also, as appropriate, to the use of other fluids instead of water.This standard is not applicable for testing of systems.