Byggnader

Ämnesområden: Byggnader: allmänt
Kommittébeteckning: SIS/TK 209 (Hållbarhet hos byggnadsverk)
Källa: CEN
Svarsdatum: den 23 apr 2020
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The document provides the specific methods and requirements for the assessment of environmental, economic and social performances of a civil engineering works while taking into account the civil engineering work’s functionality and technical characteristics. The primary objective of this document is to help in the decision making for a project by providing a standardized method for enabling comparability of scheme options. The document has not been designed to be used for the development of sustainability labels however, this use is not precluded.

The assessment of environmental and economic performances of a civil engineering works is based on Life Cycle Assessment (LCA), Life Cycle Cost (LCC), Whole-Life Cost (WLC) and other quantified environmental and economic information. The approach to the assessment covers all stages of the civil engineering works life cycle and includes all civil engineering works related construction products, processes and services, used over its life cycle. The document is applicable to new and existing civil engineering works and refurbishment projects. The environmental performance is based on data obtained from Environmental Product Declarations (EPD) and additional indicators.

The assessment of social performance differs from the assessment of economic and environmental aspects because it requires both quantitative and descriptive approaches.

The document provides requirements for:

— the description of the object of assessment;

— the system boundary that applies at the civil engineering works level;

— the procedure to be used for the analysis;

— definition of the indicators to be declared, information to be provided and the way in which they are collated and reported,

— presentation of the results in reporting and communication;

— the data necessary for the application of the standard and calculation.

Whenever the asset includes building(s) as part of the civil engineering works the building(s) will be assessed using EN 15978 for environmental performance, EN 16309 for social performance and EN 16627 for economic performance.

Kommittébeteckning: SIS/TK 189 (Innemiljö och energianvändning i byggnader)
Källa: CEN
Svarsdatum: den 30 maj 2020
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This part of ISO 11855 specifies the basic definitions, symbols, and comfort criteria for embedded radiant heating and cooling systems.

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.

Kommittébeteckning: SIS/TK 189 (Innemiljö och energianvändning i byggnader)
Källa: CEN
Svarsdatum: den 30 maj 2020
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This part of ISO 11855 establishes a system design and dimensioning method to ensure the heating and cooling capacity of the radiant heating and cooling systems.

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 applies also, 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 30 maj 2020
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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.

Kommittébeteckning: SIS/TK 189 (Innemiljö och energianvändning i byggnader)
Källa: CEN
Svarsdatum: den 30 maj 2020
Se merSe mindre
 

This part of ISO 11855 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 part of ISO 11855 defines a detailed method aimed at the calculation of heating and cooling capacity in non-steady state conditions.

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.