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  • BSI
    20/30391108 DC BS EN ISO 11855-2. Building environment design. Embedded radiant heating and cooling systems - Part 2. Determination of the design heating and cooling capacity
    Edition: 2020
    $44.66
    / user per year

Description of 20/30391108 DC 2020

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.



Standard Number20/30391108 DC
TitleBS EN ISO 11855-2. Building environment design. Embedded radiant heating and cooling systems - Part 2. Determination of the design heating and cooling capacity
StatusDefinitive
Publication Date2020-03-26
Identical National Standard OfISO/DIS 11855-2
DescriptorsHeating, Cooling, Heat transfer, Buildings, Heat pipes, Heating equipment, Surfaces, Space-heating systems, Design, Mathematical calculations, Hot-water central heating, Water, Heat capacity, Central heating
ICS91.140.30 Ventilation and air-conditioning systems, 91.040.01 Buildings in general, 91.140.10 Central heating systems
CommitteeRHE/2
PublisherBSI
Pages63

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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