UNI 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
       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

Describes the energy services to be taken into account for setting energy performance ratings for planned and existing buildings, and provides for this: - 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; - method to assess the measured energy rating, based on the delivered and exported energy; - methodology to improve confidence in the building calculation model by comparison with actual energy use; - method to assess the energy effectiveness of possible improvements.