Byggnader

Kommittébeteckning: SIS/TK 179 (Fönster, dörrar, portar, glasfasader och bygglas)
Källa: CEN
Svarsdatum: den 1 feb 2023
Se merSe mindre
 

This document specifies a calculation method to determine the thermal transmittance of glazing with flat and parallel surfaces.
This document applies to uncoated glass (including glass with structured surfaces, e.g. patterned glass), coated glass and materials not transparent in the far infrared which is the case for soda lime glass products, borosilicate glass, glass ceramic, alkaline earth silicate glass and alumino silicate glass. It applies also to multiple glazing comprising such glasses and/or materials. It does not apply to multiple glazing which include in the gas space sheets or foils that are far infrared transparent.
The procedure specified in this European Standard determines the U value (thermal transmittance) in the central area of glazing.
The edge effects due to the thermal bridge through the spacer of a sealed glazing unit or through the window frame are not included. Furthermore, energy transfer due to solar radiation is not taken into account. The effects of Georgian and other bars are excluded from the scope of this Standard.
The Standard for the calculation of the overall U value of windows, doors and shutters [1] gives normative reference to the U value calculated for the glazing components according to this standard.
For the purpose of product comparison, a vertical position of the glazing is specified. In addition, U values are calculated using the same procedure for other purposes, in particular for predicting:
— heat loss through glazing;
— conduction heat gains in summer;
— condensation on glazing surfaces;
— the effect of the absorbed solar radiation in determining the solar factor [2].
Reference should be made to [3], [4] and [5] or other European Standards dealing with heat loss calculations for the application of glazing U values determined by this standard.
A procedure for the determination of emissivity is given in EN 12898:2019.
The rules have been made as simple as possible consistent with accuracy.

Ämnesområden: Byggnader: allmänt
Kommittébeteckning: SIS/TK 189 (Innemiljö och energianvändning i byggnader)
Källa: CEN
Svarsdatum: den 8 feb 2023
Se merSe mindre
 

This part of ISO 11855 specifies procedures and conditions to enable the heat flow in electrical surface heating systems to be determined relative to the medium differential temperature for systems. The determination of thermal performance of electrical surface heating 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 surface heating systems.
The surface temperature and the temperature uniformity of the heated surface, nominal heat flow
density between electrical heated layer and space 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 buildings1). 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.

Kommittébeteckning: SIS/TK 189 (Innemiljö och energianvändning i byggnader)
Källa: CEN
Svarsdatum: den 22 mar 2023
Se merSe mindre
 

This document establishes a system design and dimensioning method to ensure the heating and cooling capacity of the radiant heating and cooling systems.

Kommittébeteckning: SIS/TK 189 (Innemiljö och energianvändning i byggnader)
Källa: CEN
Svarsdatum: den 22 mar 2023
Se merSe mindre
 

This document specifies procedures and conditions to enable the heat flux 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 document is carried out by calculation in accordance with design documents and a model. This enables 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 document 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.

Kommittébeteckning: SIS/TK 189 (Innemiljö och energianvändning i byggnader)
Källa: CEN
Svarsdatum: den 22 mar 2023
Se merSe mindre
 

This document allows the calculation of peak cooling capacity of Thermo Active Building Systems (TABS), based on heat gains, such as solar gains, internal heat gains, and ventilation, and the calculation of the cooling power demand on the water side, to be used to size the cooling system, as regards the chiller size, fluid flow rate, etc.
This document defines a detailed method aimed at the calculation of heating and cooling capacity in non-steady state conditions.

Kommittébeteckning: SIS/TK 189 (Innemiljö och energianvändning i byggnader)
Källa: CEN
Svarsdatum: den 22 mar 2023
Se merSe mindre
 

This document establishes requirements for the installation of embedded radiant heating and cooling systems. It specifies general and uniform requirements for the design and construction of heating and cooling floors, ceiling and wall structures to ensure that the heating/cooling systems are suited to the particular application. The requirements specified by this document are applicable only to the components of the heating/cooling systems and the elements which are part of the heating/cooling
surface and which are installed due to the heating/cooling systems.
This document 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, but are not applicable to panel systems with open-air gaps which are not integrated into the building structure.