BS EN 15251:2007

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Interactions with other standards
6 Design input criteria for dimensioning of
   buildings, heating, cooling, mechanical
   and natural ventilation systems
   6.1 General
   6.2 Thermal environment
   6.3 Indoor air quality and ventilation rates
   6.4 Humidity
   6.5 Lighting
   6.6 Noise
7 Indoor environment parameters for energy calculation
   7.1 General
   7.2 Thermal environment
   7.3 Indoor air quality and ventilation
   7.4 Humidity
   7.5 Lighting
8 Evaluation of the indoor environment and long
   term indicators
   8.1 General
   8.2 Design indicators
   8.3 Calculated indicators of indoor environment
   8.4 Measured indicators
   8.5 Subjective evaluations
9 Inspections and measurement of the indoor environment
   in existing buildings
   9.1 General
   9.2 Measurements
10 Classification and certification of the indoor
   environment
   10.1 General
   10.2 Detailed classification and certification
   10.3 Recommended overall evaluation of the indoor
        environment and certification
Annex A (informative) - Recommended criteria for the thermal
        environment
  A.1 Recommended categories for design of mechanical
       heated and cooled buildings
  A.2 Acceptable indoor temperatures for design of buildings
       without mechanical cooling systems
  A.3 Recommended indoor temperatures for energy calculations
Annex B (informative) - Basis for the criteria for indoor air
        quality and ventilation rates
  B.1 Recommended design ventilation rates in non-residential
       buildings
       B.1.1 General
       B.1.2 Method based on person and building component
       B.1.3 Method based on ventilation rate per person or
             per m[2] floor area
       B.1.4 Recommended values of CO[2] for energy calculation
  B.2 Recommended design ventilation rates in residential
       buildings
  B.3 Recommended criteria for dimensioning of humidification
       and de-humidification
  B.4 Recommended ventilation during un-occupied hours
Annex C (informative) - Example on how to define low and very
        low polluting buildings
Annex D (informative) - Recommended criteria for lighting
Annex E (informative) - Indoor system noise criteria of some
        spaces and buildings
Annex F (informative) - Long term evaluation of the general
        thermal comfort conditions
Annex G (informative) - Recommended criteria for acceptable
        deviations
  G.1 Building Category
  G.2 Length of deviation
Annex H (informative) - Methodologies for subjective evaluations
Annex I (informative) - Examples of classification and
        certification of the indoor Environment
  I.1 The design criteria used
  I.2 Whole year computer simulations of the indoor environment
       and energy performance
  I.3 Long term measurement of selected parameters for
       the indoor environment
  I.4 Subjective responses from occupants
Bibliography

Defines the indoor environmental parameters, which have an impact on the energy performance of buildings.

- This European Standard specifies the indoor environmental parameters which have an impact on the energy performance of buildings. - The standard specifies how to establish indoor environmental input parameters for building system design and energy performance calculations. - The standard specifies methods for long term evaluation of the indoor environment obtained as a result of calculations or measurements. - The standard specifies criteria for measurements which can be used if required to measure compliance by inspection. - The standard identifies parameters to be used by monitoring and displaying the indoor environment in existing buildings. - This standard is applicable mainly in non-industrial buildings where the criteria for indoor environment are set by human occupancy and where the production or process does not have a major impact on indoor environment. The standard is thus applicable to the following building types: single family houses, apartment buildings, offices, educational buildings, hospitals, hotels and restaurants, sports facilities, wholesale and retail trade service buildings. - The standard specifies how different categories of criteria for the indoor environment can be used. But does not require certain criteria to be used. This is up to national regulations or individual project specifications. - The recommended criteria in this standard can also be used in national calculation methods, which may be different to the methods referred to here. - The standard does not prescribe design methods, but give input parameters to the design of buildings, heating, cooling, ventilation and lighting systems. The standard does not include criteria for local discomfort factors like draught, radiant temperature asymmetry, vertical air temperature differences and floor surface temperatures.