EN 15603:2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols, units and subscripts
5 Assessment of energy performance of buildings
   5.1 Energy uses
   5.2 Assessment boundaries
   5.3 Types and uses of ratings
6 Calculated energy rating
   6.1 Calculation procedure
       6.1.1 General
       6.1.2 Calculation step
       6.1.3 Calculation principles of the recovered gains
             and losses
       6.1.4 Effect of integrated control
   6.2 Building thermal needs
   6.3 Technical building systems
       6.3.1 Technical system thermal losses, electrical and
             auxiliary energy without building generation devices
       6.3.2 Thermal energy generation systems
7 Measured energy rating
   7.1 General requirements
   7.2 Assessment period
       7.2.1 General
       7.2.2 Extrapolation to an integral number of years
   7.3 Assessing the used amounts of all energy carriers
       7.3.1 General
       7.3.2 Metered fuels (electricity, gas, district heating
             and cooling)
       7.3.3 Liquid fuels in tanks
       7.3.4 Solid fuels
       7.3.5 Energy monitoring
   7.4 Correction for weather
8 Weighted energy ratings
   8.1 Types of ratings
   8.2 Types of factors or coefficients
       8.2.1 General
       8.2.2 Average factor or coefficient
       8.2.3 Marginal factor or coefficient
       8.2.4 End use factor or coefficient
   8.3 Primary energy rating
       8.3.1 General
       8.3.2 Primary energy
       8.3.3 Primary energy factors
   8.4 Carbon dioxide rating
       8.4.1 Carbon dioxide emissions
       8.4.2 CO[2] emission coefficients
   8.5 Policy energy rating
9 Validated building calculation model
   9.1 Introduction
   9.2 Procedure - validation of the building calculation model
   9.3 Climatic data
   9.4 Occupancy data
       9.4.1 Internal temperature
       9.4.2 Air infiltration and ventilation
       9.4.3 Internal heat sources
       9.4.4 Hot water use
       9.4.5 Artificial lighting
   9.5 Ratings based on the validated calculation model
10 Planning of retrofit measures for existing buildings
11 Report
Annex A (informative) Methods for collecting building data
      A.1 Data on building envelope
          A.1.1 General
          A.1.2 Assessment of thermal transmittance of opaque
                building elements
          A.1.3 Assessment of thermal transmittance and total
                solar energy transmittance of transparent elements
          A.1.4 Assessment of thermal characteristics of thermal
                bridges
          A.1.5 Assessment of air flow rates and infiltration
      A.2 Thermal capacity
      A.3 Heating systems
      A.4 Ventilation systems
          A.4.1 Assessment of airflow rates
          A.4.2 Thermal efficiency of heat recovery systems
          A.4.3 Assessment of auxiliary energy use
      A.5 Cooling systems
      A.6 Building operation
Annex B (informative) Energy monitoring
      B.1 Energy signature
      B.2 H-m method
Annex C (informative) Other uses of energy
      C.1 General
      C.2 Residential buildings
      C.3 Office buildings
Annex D (informative) Calorific values of fuels
      D.1 General
      D.2 Solid and liquid energy carriers
      D.3 Gaseous fuels
Annex E (informative) Factors and coefficients
Annex F (informative) Confidence intervals
      F.1 Definition
      F.2 Assessment of confidence interval
      F.3 Examples
          F.3.1 General
          F.3.2 Indications on confidence intervals
Annex G (informative) Example
      G.1 Building description
      G.2 Standard calculated rating
Bibliography

The purpose of the standard is to:a)collate results from other standards that calculate energy use for specific services within a building; b)account for energy generated in the building, some of which may be exported for use elsewhere;c)present a summary of the overall energy use of the building in tabular form;d)provide energy ratings based on primary energy, carbon dioxide emission or other parameters defined by national energy policy;e)establish general principles for the calculation of primary energy factors and carbon emission coefficients.This standard defines the energy services to be taken into account for setting energy performance ratings for planned and existing buildings, and provides for this:f)method to compute the standard calculated energy rating, a standard energy use that does not depend on occupant behaviour, actual weather and other actual (environment or indoor) conditions; g)method to assess the measured energy rating, based on the delivered and exported energy; h)methodology to improve confidence in the building calculation model by comparison with actual energy use;i)method to assess the energy effectiveness of possible improvements.This European standard is applicable to a part of a building (e.g. flat), a whole building, or several buildings. It is up to national bodies to define under which conditions, for which purposes and for which types of buildings the various ratings apply. This standard handles the energy performance of a building as a whole. The assessment of the energy performance of specific technical building systems is handled in the appropriate part of EN 15241, prEN 15243 and EN 15316 series.