DS/EN ISO 11855-2:2021

Bygningsmiljø – Integrerede strålevarme-/strålekølesystemer – Del 2: Bestemmelse af den dimensionerende varme- og kølekapacitet

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This part of ISO 11855 specifies procedures and conditions to enable the heat flow in water based
surface heating and cooling systems to be determined relative to the medium differential temperature
for systems. The determination of thermal performance of water based surface heating and cooling
systems and their conformity to this part of ISO 11855 is carried out by calculation in accordance with
design documents and a model. This should enable a uniform assessment and calculation of water based
surface heating and cooling systems.
The surface temperature and the temperature uniformity of the heated/cooled surface, nominal heat
flux between water and space, the associated nominal medium differential temperature, and the field
of characteristic curves for the relationship between heat flux and the determining variables are given
as the result.
This part of ISO 11855 includes a general method based on Finite Difference or Finite Element Methods
and simplified calculation methods depending on position of pipes and type of building structure.
The ISO 11855 series is applicable to water based embedded 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. It does not apply to panel systems with
open air gaps which are not integrated into the building structure.
The ISO 11855 series also applies, as appropriate, to the use of fluids other than water as a heating or
cooling medium. The ISO 11855 series is not applicable for testing of systems. The methods do not apply
to heated or chilled ceiling panels or beams.

Antal sider: 70

Udgivet: 2021-10-14

Godkendelsesdato: 2021-10-11

Internationale relationer : EN ISO 11855-2:2021 IDT ISO 11855-2:2021 IDT

ICS: 91.040.01 - Bygninger. Generelt

Varenummer: M340106

Udvalg og komiteer


  • CEN/TC 228
  • ISO/TC 205
  • ISO/TC 205/WG 8

Dansk udvalg