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Homepage>BS Standards>91 CONSTRUCTION MATERIALS AND BUILDING>91.040 Buildings>91.040.01 Buildings in general>BS EN ISO 11855-8:2023 Building environment design. Design, dimensioning, installation and control of embedded radiant heating and cooling systems Electrical heating systems
immediate downloadReleased: 2024-02-26
BS EN ISO 11855-8:2023 Building environment design. Design, dimensioning, installation and control of embedded radiant heating and cooling systems Electrical heating systems

BS EN ISO 11855-8:2023

Building environment design. Design, dimensioning, installation and control of embedded radiant heating and cooling systems Electrical heating systems

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Standard number:BS EN ISO 11855-8:2023
Pages:18
Released:2024-02-26
ISBN:978 0 539 22484 9
Status:Standard
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BS EN ISO 11855-8:2023


This standard BS EN ISO 11855-8:2023 Building environment design. Design, dimensioning, installation and control of embedded radiant heating and cooling systems is classified in these ICS categories:
  • 91.040.01 Buildings in general
This part of ISO 11855 specifies procedures and conditions to enable the heat flow in water based and electrical 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 flow density between water or electrical heated layer and space, the associated nominal medium differential temperature, and the field of characteristic curves for the relationship between heat flow density and the determining variables are given as the result. 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 ceiling mounted 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.   Part 7 of the ISO 11855 series can also be used for electrical heated embedded systems.