How to integrate the CEN-EPBD standards in national building

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					How to integrate the CEN-EPBD standards
    in national building regulations?
                  The use of EN 15603 as starting point for
                 coordination of Member States regulations

                                     Johann ZIRNGIBL
                                       CSTB / France
                                  johann.zirngibl@cstb.fr




Contract: EIE/07/069/SI2.466698   Duration: October 2007 – March 2010   Version: Nov. 30, 2009
                       Outline


• The EU CENSE project
• Background
• Starting point – modular structure
• Basic calculation steps (from the needs to source)
• Reporting and Benchmarking
• Conclusion and Outlook




                                                       slide 2
                    The EU CENSE project
                     (Oct. 2007 - March 2010)

Aim of the project:
To accelerate adoption and improve effectiveness of the EPBD related CEN-
   standards in the EU Member States

These standards were successively published in the years 2007-2008 and are
   being implemented or planned to be implemented in many EU Member
   States. However, the full implementation is not a trivial task

Main project activities:
A. To widely communicate role, status and content of these standards; to
   provide guidance on the implementation
B. To collect comments and good practice examples from Member States
   aiming to remove obstacles
C. To prepare recommendations to CEN for a “second generation” of
   standards on the integrated energy performance of buildings




                                                                      slide 3
                 Brief introduction

A brief introduction to the CENSE project and the CEN-
EPBD standards is provided in a separate presentation:




                                                    slide 4
                                  More information

More information and downloads:                 www.iee-cense.eu



Disclaimer:
CENSE has received funding from the Community’s Intelligent Energy Europe programme
under the contract EIE/07/069/SI2.466698.
The content of this presentation reflects the authors view. The author(s) and the European
Commission are not liable for any use that may be made of the information contained therein.
Moreover, because this is an interim result of the project: any conclusions are only preliminary
and may change in the course of the project based on further feedback from the contributors,
additional collected information and/or increased insight.




                                                                                                   slide 5
                                  Background
        Why a methodology of the integrated energy performance?
• Energy Performance of Buildings Directive (EPBD) article 3
  Methodology calculating the integrated energy performance of buildings
• Rating: Energy amount shall be reflected in one numeric indicator (article. 7)
  ( taking into account insulation, tech. installation characteristics, etc.)
• Interactions between different energy services (e.g. heating, cooling, lighting)

                           Why European standards?
• Make possible to coordinate the various measures for energy efficiency in
  buildings between the Member States
• Increase the accessibility, transparency and objectivity of the assessment
• Avoid new trade barriers
• Adopt the same structure - starting point for building code coordination


                             Mandate 343 to CEN


                                                                                slide 6
               Starting point of convergence


• Adopt the same overall calculation structure
• Structure could be gradually be filled in at national level
  - CEN standards (national annexe)
  - national standards or methods


  General calculation structure is defined in EN 15603
  “ Overall energy use and definition of energy ratings”




                                                                slide 7
         Modular structure of CEN Standards

                          From product standards to overall energy use

      EN 15603
                          Product is not longer evaluated as a product but as
                          part of a system

    Energy use            Maintain the links between
                          product testing and system evaluation


     Energy needs
                          Definition of the energy uses (heating, cooling, lighting, etc.)

                          Definition of the boundaries conditions
Product characteristics   (parking, energy flows, calculation periods)




                                                                                slide 8
                              Basic steps
 Building Need
 EN ISO 13790

                     •   Calculation direction from needs to source
Emission & control       (from the energy needs to the primary energy).
 EN 15316-2-1
                     •   Energy can be imported or exported
                         (different weightings)
   Distribution
  EN 15316-2-3       •   Electrical uses and thermal uses are considered
                         separately inside the building boundary.
  Generation         •   Inside the system boundary the system losses are
 EN 15316-4-xx           taken into account explicitly,
                     •   Outside the system boundary they are taken into
 Primary Energy          account in the conversion factor
    EN 15603
                         (e.g. district heating).

  Energy
Performance




                                                                            slide 9
                                    Building energy needs

  Table 4 - EN 15603

                                     C1         C2        C3         C3          C4
                                                                              Domestic
                                          Heating            Cooling
                                                                              hot water

                                   sensible    latent   sensible     latent
                                     heat       heat      heat        heat                Annual values calculated by :
      Building heat gains and                                                             - simplified methods
 L1   recoverable thermal losses                    -                  -          -        (e.g. monthly calculation step)
      a)
                                                                                          - detailed methods
 L2   Building thermal transfers                    -                  -          -
                                                                                           (e.g. hourly calcualtion step)
                                                        Not taken
                                                           into
 L3   Building thermal needs       14400                account in              2100
                                                           this
                                                         example

 a): if applicable

Table 1: Building energy needs (example table 4/EN 15603, values in kWh/a)




                                                                                                             slide 10
                       Technical building systems
                   without building generation devices
                                               Type of domestic         System            Recoverable      Electrica
Table 2a: Example: DHW distribution:              hot water             thermal              system        l energy
• system thermal losses,                         distribution            losses           thermal loss     (kWh/m2
                                                                      (kWh/m2 a)           (kWh/m2 a)          a)
• recoverable system thermal loss,
• electrical energy,                              Collective with        22,65                 0,0            1,4
                                                    circulation
energy per m2 floor area.                     Alternatives, e.g.:
                                                 Collect. without         10,8                 3,7                0
                                                   circulation
                                                   Individual                 3,8              2,0                0

                                                  Type of ventilation               System thermal       Electrical
                                                     distribution                       losses            energy
Table 2b: Example: ventilation distribution
                                                                                      (kWh/m2 a)         (kWh/m2 a)
• system thermal losses,                           Mechanical ventilation                0,0                4,0
• electrical energy                                       system –
energy per m2 floor area.                              not balanced
                                              Alternatives, e.g.:
                                                   Mechanical ventilation
                                                          system –
                                              balanced (heat recovery eff.
                                                           >60%)
                                                - inside thermal insulation              0,0                6.0
                                               - outside thermal insulation              4,3                6.0
                                                                                                         slide 11
                          Technical building systems
                      without building generation devices
    Table 5 - EN 15603
                                                               C1         C2         C3              C4               C5

                                                                                 Domestic
                                                            Heating     Cool.                   Ventilation       Lighting
                                                                                 Hot water
Based on these examples                                                                                            Not taken
                                                                                     140            400
for a building with 100 m2       Electrical energy            190                 (1,4x100)      (4,0x100)    into account in this
with:                                                                                                               example

• a collective DHW system
  with circulation;
• a non balanced mech.           System                       2020                 2265              0
                                                                                                                   Not taken
                                                                                                              into account in this
  ventilation system;            thermal losses                                 (22,65x100)
                                                                                                                    example
• a heating system with
  distribution losses            Recoverable system
  amounting e.g. 2020 kWh;       thermal losses

 table 5/EN 15603; can be        Thermal input               16420                  4365
                                 distribution             (14400+2020           (2100+2265)
completed like follows.

     Table 3: System thermal losses and auxiliary energy without generation (example table 5/EN 15603, values in kWh/a)




                                                                                                                slide 12
                                 Energy generation systems
    Table 6 - EN 15603
Table 4: Energy generation system (example table 6 EN 15603, values in kWh/a)

                                               C1               C2            C3
                                                               Solar
        Type of generator                 LT Gas boiler                   Grid electr.
                                                               panel
        Distribution systems supplied     Heating /DHW         DHW                       Following the physical structure
                                              19655                                      of heating systems, the heat
  L8    Thermal output                                         1130             -
                                        (16420+4365-1130)
                                                                                         input to the distribution system is
  L9  Auxiliary energy (*)                     80               80              -
      System (generator) thermal
                                                                                         dispatched,    according    to     the
  L10                                         3734
      losses                                                                             system design, to the different
        Recoverable system thermal
  L11                                                                                    energy     generation      systems
        losses
  L12 Energy input                           23389               0            890        and/or   the    energy     supplied
                                                                                         directly from outside the building
  L13 Electricity production
  L14 Energy carrier                          gas              solar       electricity

                                                            (*): for the generator


                                                                                                                 slide 13
           Calculation of ratings (weighted energy ratings)
  Table E1 - EN 15603 annex E

Informative values                  Primary energy     CO2 production
                                       factors fP       coefficient K
                                                                        According to EN 15603 the
                                      Non-     Total     [kg/MWh]
                                                                        aggregation methods are based on:
                                   renewable
                                                                         • Primary energy;
Fuel oil                             1.35      1.35         330          • Production of carbon dioxide;
Gas                                  1.36      1.36         277          • A parameter defined by
                                                                           national energy policy.
Anthracite                           1.19      1.19         394

Wood shavings                        0.06      1.06          4          Cost is a parameter that may be
Electricity from hydraulic power
plant                                0.50      1.50          7
                                                                        used in the energy policy
                                                                        aggregation method.
Electricity Mix                      3.14      3.31         617


  Table 5: Informative Primary energy factors and CO2 coefficients
  in EN 15603 (extract)




                                                                                                slide 14
   Calculation of ratings (weighted energy ratings)

Table 8 - EN 15603
     Row                                            C1            C2               C3

                                                            Delivered energy
                                                   Gas            Solar         Electricity
      L1    Energy delivered (unweighted)         23389           1130             890
      L2    Weighting factor or coefficient        1,36             0             3,14
      L3    Weighted delivered energy or CO2      31809             0             2794
                                                            Exported energy
                                                  thermal       electrical
      L4    Energy exported (unweighted)
      L5    Weighting factor
      L6    Weighted exported energy or CO2                                         0

                                                                                   34603
      L7    Rating
                                                                               (31809+2794)



           Table 6: Calculation of ratings (example table 8/EN 15603, values in kWh/a)




                                                                                              slide 15
         Example of complete system calculation flow
       D.H.W. Need          Heating need, zone 1          Heating need, zone 2
                                                                                              Total needs   3.500 kWh
   QW,nd         500 kWh     QH,nd,Z1  1.000 kWh           QH,nd,Z2  2.000 kWh



       Distribution           Emission & control           Emission & control
  QW,dis,ls      25 kWh     QH,em,ls,Z1         40 kWh     First 120 building
                                                          QH,em,ls,Z2 step: kWh    needs
  QW,dis,in      525 kWh    QH,em,in,Z1       1.040 kWh   QH,em,in,Z2 and losses of theη
                                                           Gains 2.120 kWh             building are
                                                           taken into account here
                                                                                                             73,1%
         Storage                  Distribution                 Distribution
                                                                                               Overall
  QW,st,ls     200 kWh       QH,dis,ls,Z1  120 kWh        QH,dis,ls,Z2 106 kWh
                                                                                              efficiency
  QW,st,in       725 kWh     QH,dis,in,Z1     1.160 kWh   QH,dis,in,Z2   2.226 kWh



                                                            Second step : Technical systems
      Thermal solar                    Boiler                 Delivered
                                                            without energy




                                                                                     Factor
                                                                                     Conv.
                                                                          generation.      Primary energy
QW,gen,out,sol   400 kWh   QHW,gen,out,boil 3.711 kWh           Total by carrier
                                                                The basic principle in each “box” is
W W,gen,in,sol   20 kWh    W HW,gen,in,boil   148 kWh
                                                                            output 2,5 421 - recov. aux.
                                                                input =168 kWh + losses kWh
                                                            Electricity

                           EHW,gen,in,boil    4.366 kWh        Fuel       4.366 kWh 1,0 4.366 kWh   4.787 kWh
                                                                 (auxiliary energy recovery not shown)
EW,gen,sol,in    920 kWh                                  Solar radiation  920 kWh  0,0   0 kWh
                                                            Each “box” can be calculated by
                                                            national , EN, detailed or simplified
                                                            method , provided the I/O are the same
                                                                                                             slide 16
         Example of complete system calculation flow
       D.H.W. Need          Heating need, zone 1           Heating need, zone 2
                                            Third  step: generationkWh           Total needs 3.500 kWh
   QW,nd         500 kWh     QH,nd,Z1  1.000 kWh        QH,nd,Z2   2.000 dispatch
                                            Required distribution outputs are distributed to the
                                            available generators
       Distribution          Emission & control         Emission & control
                                            First solar: required output for dhw is 725 kWh, the
  QW,dis,ls      25 kWh     QH,em,ls,Z1   40 kWh       QH,em,ls,Z2  120
                                            solar panels can give kWh kWh
                                                                        400
  QW,dis,in      525 kWh    QH,em,in,Z1 1.040 kWh      QH,em,in,Z2 2.120 kWh         η
                                            Then boiler: 3711 kWh = (725 +1160+2226-400) kWh
                                                                                                              73,1%
         Storage                  Distribution                 Distribution
  QW,st,ls                   QH,dis,ls,Z1
                                                          System calculation
                                                          QH,dis,ls,Z2
                                                                                   result:
                                                                                     Overall
               200 kWh                     120 kWh                     106 kWh
                                                          Energy 2.226 kWh          efficiency
                                                                       use (input to generators)
  QW,st,in       725 kWh     QH,dis,in,Z1     1.160 kWh   QH,dis,in,Z2
                                                          by energy carrier

      Thermal solar                    Boiler                 Delivered energy




                                                                                        Factor
                                                                                        Conv.
                                                                                                   Primary energy
QW,gen,out,sol   400 kWh   QHW,gen,out,boil 3.711 kWh           Total by carrier
W W,gen,in,sol   20 kWh    W HW,gen,in,boil   148 kWh       Electricity     168 kWh     2,5      421 kWh
                           EHW,gen,in,boil    4.366 kWh        Fuel         4.366 kWh   1,0      4.366 kWh   4.787 kWh
EW,gen,sol,in    920 kWh                                  Solar radiation   920 kWh     0,0       0 kWh




                                                                                                              slide 17
         Example of complete system calculation flow
       D.H.W. Need          Heating need, zone 1           Heating need, zone 2
                                                                                                 Total needs   3.500 kWh
   QW,nd         500 kWh     QH,nd,Z1  1.000 kWh            QH,nd,Z2  2.000 kWh



                           Emission & like
Sixth step: getting other resultscontrol
     Distribution                                Emission & control
• QW,dis,ls      25 kWh   QH,em,ls,Z1
  heating system performance 40 kWh             QH,em,ls,Z2  120 kWh
• QW,dis,in     525 kWh   QH,em,in,Z1 1.040 kWh
  distributing the overall energy performance toQH,em,in,Z2 2.120 kWh                                η
         Fifth i.e. how much is primary energy for
  services step: weighting and getting the overall                                                              73,1%
         energy how much for heating
  DHW? And performanceDistribution zone 1 and Distribution
          Storage                                    2?
                                                                                                  Overall
  QW,st,ls       200 kWh     QH,dis,ls,Z1     120 kWh      QH,dis,ls,Z2     106 kWh
                                                                                                 efficiency
  QW,st,in       725 kWh     QH,dis,in,Z1     1.160 kWh    QH,dis,in,Z2     2.226 kWh




      Thermal solar                    Boiler                 Delivered energy




                                                                                        Factor
                                                                                        Conv.
                                                                                                    Primary energy
QW,gen,out,sol   400 kWh   QHW,gen,out,boil 3.711 kWh           Total by carrier
W W,gen,in,sol   20 kWh    W HW,gen,in,boil   148 kWh       Electricity     168 kWh     2,5       421 kWh
                           EHW,gen,in,boil    4.366 kWh        Fuel         4.366 kWh   1,0      4.366 kWh     4.787 kWh
EW,gen,sol,in    920 kWh                                  Solar radiation   920 kWh     0,0        0 kWh




                                                                                                                slide 18
                                                         Reporting
          Building          Technical building
                                                     Energy delivered    Energy rating
      thermal needs        system performance
                                                     (content of         (Weighted Energy
                                                                                             Table 9 - EN 15603
      (without techn.    (thermal system losses-
                                                     energy carriers )   carriers)
      build. systems)       recovered losses)
                         Heat (H+W): 8019
                         (2020+2265+3734)
     Heating:            Cooling:                    Gas 23389
         14400           Electricity *):             Oil
                                                                         Gas 31809
                                                                                            • resumes main parameters
     Hot water:          Heat auxiliary 490          Electricity 890                          influencing the building
                                                                         Electricity 2794
     2100                (190+140+80+80)             District heating
     Cooling:        -   Cooling auxiliary           Etc.                                     energy performance
                         Lighting
                         Ventilation 400                                                    • should be respected by
                                                     Energy exported
                                                     (Unweighted                              national regulations
 *) includes electricity for ventilation, lighting   energy carriers)
 and the auxiliary energy for thermal
 systems; does not include electricity for           Thermal:
 heating, cooling, DHW, humidification and                                     34603
 dehumidification.
                                                     Renewable
                                                     energy produced
Table 7: Reporting overall energy use                on site
(example table 9 EN 15603,                           Thermal 1130
values in kWh/a)
                                                     Electrical




                                                                                                           slide 19
       Links between Building codes and EN 15603
Example: Association of minimum energy requirements and one global requirement

                               General frame EN 15603

Building thermal needs         Technical systems   Energy delivered       Energy rating
(without techn. build. syst)     (system losses)   (energy carriers)       (weighted)


   Minimum energy                              Minimum energy            Global energy
    requirement on                              requirement on           requirement on
Building thermal needs                         Delivered energy           Energy rating
 Example: < 50 kWh/m2a                       Example:<100 kWh/m2a Example:<120 kWh/m2a
                                                                  (less then sum of min.req.)




                        Building codes requirements (Member states)



                                                                                 slide 20
             Conclusion and Outlook


•   CEN worked out a complete, consistent and flexible
    approach, from the product standard to the overall energy use
•   EN 15603 is the top standard             of   this   approach
    defining the whole structure
•   Reporting according EN 15603 underlines the strong and
    weak points in the overall energy use of a building
•   Adopting EN 15603 in national building regulation is the first
    step towards an European calculation method




                                                                slide 21
                          More information
More information and downloads:                 www.iee-cense.eu



Disclaimer:
CENSE has received funding from the Community’s Intelligent Energy Europe programme
under the contract EIE/07/069/SI2.466698.
The content of this presentation reflects the authors view. The author(s) and the European
Commission are not liable for any use that may be made of the information contained therein.
Moreover, because this is an interim result of the project: any conclusions are only preliminary
and may change in the course of the project based on further feedback from the contributors,
additional collected information and/or increased insight.




                                                                                                   slide 22

				
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