SIST EN 15217:2007
(Main)Energy performance of buildings - Methods for expressing energy performance and for energy certification of buildings
Energy performance of buildings - Methods for expressing energy performance and for energy certification of buildings
This standard defines:
a) Global indicators to express the energy performance of whole buildings, including heating, ventilation, air conditioning, domestic hot water and lighting systems. This includes the different possible indicators as well as a method to normalize them.
b) Ways to express energy requirements for the design of new buildings or renovation of existing buildings.
c) Procedures to define reference values and benchmarks
d) Ways to design energy certification schemes including:
Energieeffizienz von Gebäuden - Verfahren zur Darstellung der Energieeffizienz und zur Erstellung des Gebäudeenergieausweises
Diese Norm legt Folgendes fest:
a) globale Indikatoren zur Darstellung der Energieeffizienz von gesamten Gebäuden, einschließlich Anlagen für Heizung, Lüftung, Klimatisierung, häusliches Warmwasser und Beleuchtung. Dies umfasst die verschiedenen möglichen Indikatoren sowie ein Verfahren zu deren Normalisierung.
b) Möglichkeiten zur Darstellung der energiebezogenen Anforderungen an die Planung neuer oder die Renovierung bestehender Gebäude.
c) Verfahren zur Festlegung von Bezugswerten und Festpunkten.
d) Möglichkeiten zur Entwicklung von Schemas für die Energiepasserstellung.
Performance énergétique des bâtiments - Méthodes d'expression de la performance énergétique et de certification énergétique des bâtiments
La présente Norme européenne spécifie :
a) des indicateurs globaux permettant d’exprimer la performance énergétique de bâtiments dans leur ensemble, y compris les systèmes de chauffage, de ventilation, d’air conditionné, d’eau chaude sanitaire et d’éclairage. Divers indicateurs sont utilisables ;
b) des méthodes pour exprimer les exigences énergétiques pour la conception des bâtiments neufs ou la rénovation des bâtiments existants ;
c) les procédures pour définir les valeurs de référence ;
d) des méthodes pour concevoir une procédure de certification énergétique des bâtiments.
Cette norme peut être appliquée à un groupe de bâtiments, s’ils sont situés sur le même terrain, s’ils sont desservis par les mêmes systèmes techniques et si au maximum l’un d’entre eux dispose d’une surface conditionnée supérieure à 1 000 m2.
La présente Norme européenne fournit diverses options à différents niveaux. Lorsqu’elle est employée pour créer des méthodes d’expression de la performance énergétique et/ou de certification énergétique des bâtiments au niveau national ou régional, les choix entre les différentes options ne sont pas effectués par l’utilisateur individuel, mais par des organismes nationaux ou régionaux autorisés.
Energijske lastnosti stavb - Metode za izražanje lastnosti energije in za certificiranje energije v stavbah
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Energijske lastnosti stavb - Metode za izražanje lastnosti energije in za certificiranje energije v stavbahEnergieeffizienz von Gebäuden - Verfahren zur Darstellung der Energieeffizienz und zur Erstellung des GebäudeenergieausweisesPerformance énergétique des bâtiments - Méthodes d'expression de la performance énergétique et de certification énergétique des bâtimentsEnergy performance of buildings - Methods for expressing energy performance and for energy certification of buildings91.120.10Toplotna izolacija stavbThermal insulationICS:Ta slovenski standard je istoveten z:EN 15217:2007SIST EN 15217:2007en01-november-2007SIST EN 15217:2007SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15217June 2007ICS 91.120.01 English VersionEnergy performance of buildings - Methods for expressingenergy performance and for energy certification of buildingsPerformance énergétique des bâtiments - Méthodesd'expression de la performance énergétique et decertification énergétique des bâtimentsEnergieeffizienz von Gebäuden - Verfahren zur Darstellungder Energieeffizienz und zur Erstellung desGebäudeenergieausweisesThis European Standard was approved by CEN on 10 May 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15217:2007: E
EN 15217:2007 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.5 4 Symbols and abbreviations.10 5 Energy performance indicators.10 5.1 Indicators.10 5.2 Indicator basis.10 5.3 Normalization of energy rating.11 6 Expression of energy requirements.11 6.1 Ways of expressing the requirements.11 6.2 Overall energy requirements.12 6.3 Modification of the impact of certain parameters.13 6.4 Renovation of and extensions to existing buildings.14 7 Reference values.15 7.1 Types of reference values.15 7.2 Content of reference values.15 7.3 Documentation of reference values.16 8 Procedure for building energy certification.16 8.1 General.16 8.2 Content of procedure for building energy certification.16 8.3 Content of the energy certificate.17 8.4 Overall energy performance indicator.18 8.5 Performance scale.18 8.6 Recommendations.19 Annex A (normative)
Procedure for building energy certification documentation.20 Annex B (informative)
Procedure for building energy performance classification.23 Annex C (informative)
Energy certificate format.25 Annex D (informative)
Requirements on the characteristics of the building envelope and of the system components.28 Bibliography.31
EN 15217:2007 (E) 3 Foreword This document (EN 15217:2007) has been prepared by Technical Committee CEN/TC 89 “Thermal performance of buildings and building components”, the secretariat of which is held by SIS. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2007, and conflicting national standards shall be withdrawn at the latest by December 2007. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association (Mandate M/343), and supports essential requirements of EU Directive 2002/91/EC on the energy performance of buildings (EPBD). It forms part of a series of standards aimed at European harmonisation of the methodology for the calculation of the energy performance of buildings. An overview of the whole set of standards is given in CEN/TR 15615. Attention is drawn to the need for observance of EU Directives transposed into national legal requirements. Existing national regulations (with or without reference to national standards) may restrict for the time being the implementation of this European Standard. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN 15217:2007 (E) 4 Introduction Expression of the energy performance of buildings is needed: to enable the establishment of regulations regarding energy performance of buildings; to encourage building designers, owners, operators and users to improve the energy performance of buildings. This European Standard provides methods to express the energy performance of buildings in a way that serves these purposes. It is based on standards that provide methods to calculate or measure energy performance. This European Standard is intended to be used: by developers of a procedure for building energy certification; by building authorities setting minimum requirements on the energy performance; by building designers, building owners, building operators and building users to assess the performance of a planned or existing building and ways to improve it, and to express this performance.
EN 15217:2007 (E) 5 1 Scope This European Standard specifies: a) overall indicators to express the energy performance of whole buildings, including heating, ventilation, air conditioning, domestic hot water and lighting systems. This includes different possible indicators; b) ways to express energy requirements for the design of new buildings or renovation of existing buildings; c) procedures to define reference values; d) ways to design a procedure for building energy certification. The standard can be applied to a group of buildings, if they are on the same lot, if they are serviced by the same technical building systems and if no more than one of them has a conditioned area of more than
1 000 m2. This European Standard provides different options at different levels. When this European Standard is used to set up national or regional methods for expressing energy performance and/or for energy certification of buildings, the choices between the options is not made by the individual user, but by authorized national or regional bodies. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 7345:1995, Thermal insulation — Physical quantities and definitions (ISO 7345:1987) prEN 156031), Energy performance of buildings — Overall energy use and definition of energy ratings 3 Terms and definitions For the purposes of this document, terms and definitions given in prEN 15603 and in EN ISO 7345:1995 and the following apply. 3.1 energy certification procedures enabling to produce an energy certificate 3.2 energy certificate document recognised by a member state or a legal person designated by it, which includes the energy performance of a building NOTE The meaning of the terms “certificate” and "certification" in this European Standard differ from that in EN ISO/IEC 17000.
1) prEN 15603 is a merge of prEN 15203 and prEN 15315.
EN 15217:2007 (E) 6 3.3 energy class easy to understand metric (e.g. A to G) for indicating the energy performance of a building 3.4 reference value standard legal or calculated value against which an energy indicator is compared 3.5 energy performance requirement minimum level of energy performance that is to be achieved to obtain a right or an advantage: e.g. right to build, lower interest rate, quality label 3.6 calculated energy rating energy rating based on calculations of the weighted net delivered energy used annually by a building for heating, cooling, ventilation, domestic hot water and lighting NOTE National bodies can decide whether other energy uses resulting from occupants' activities such as cooking, production, laundering, computer equipment etc. are included or not. If included, standard input data needs to be provided for the various types of building and uses. Lighting is always included except (by decision of national bodies) for residential buildings. 3.7 standard energy rating calculated energy rating using actual data for a building and a standard use data set NOTE 1 The thermal envelope area represents the intrinsic annual energy use of a building under standardised conditions. This is particularly relevant to certification of standard energy performance. NOTE 2 It can also be termed "asset energy rating". 3.8 design energy rating calculated energy rating using design data for a building and a standard use data set NOTE It represents the calculated intrinsic annual energy use of a designed building under standardised conditions. This is particularly relevant to obtain a building permit at the design stage. 3.9 tailored energy rating calculated energy rating using actual data for a building, and actual climate and occupancy data 3.10 standard use data set standard input data for internal and external climates, use and occupancy NOTE 1 This set can also include information on surroundings (such as shading or sheltering by adjacent buildings). NOTE 2 Such data sets are defined at national level. 3.11 measured energy rating energy rating based on measured amounts of delivered and exported energy NOTE 1 The measured rating is the weighted sum of all energy carriers used by a building, as measured by meters or other means. It is a measure of the in-use performance of a building. This is particularly relevant to certification of actual energy performance. NOTE 2 Also known as "operational rating".
EN 15217:2007 (E) 7 3.12 energy performance indicator energy rating divided by conditioned area 3.13 measured energy indicator measured energy performance indicator divided by conditioned area 3.14 standard energy indicator standard energy performance indicator divided by conditioned area 3.15 building construction as a whole, including its envelope and all technical building systems, for which energy is used to condition the indoor climate, to provide domestic hot water and illumination and other services related to the use of the building NOTE This term can refer to the building as a whole or to parts thereof that have been designed or altered to be used separately. 3.16 new building for calculated energy rating: building at design stage or under construction for measured energy rating: building too recently constructed to have reliable records of energy use 3.17 existing building for calculated energy rating: building that is erected for measured energy rating: building for which actual data necessary to assess the energy use are known or can be measured 3.18 technical building system technical equipment for heating, cooling, ventilation, domestic hot water, lighting and electricity production NOTE 1 A technical building system can refer to one or to several building services (e.g. heating system, heating and DHW system). NOTE 2 Electricity production can include cogeneration and photovoltaic systems. 3.19 internal dimension length measured form wall to wall and floor to ceiling inside a room of a building 3.20 overall internal dimension length measured on the interior of a building, including interruptions by internal partitions 3.21 external dimension
length measured on the exterior of a building 3.22 heated space room or enclosure which for the purposes of a calculation is assumed to be heated to a given set-point temperature or set point temperatures
EN 15217:2007 (E) 8 3.23 cooled space room or enclosure which for the purposes of a calculation is assumed to be cooled to a given set-point temperature or set point temperatures 3.24 conditioned space heated and/or cooled space NOTE The heated and/or cooled spaces are used to define the thermal envelope. 3.25 unconditioned space room or enclosure which is not part of a conditioned space 3.26 conditioned area floor area of conditioned spaces excluding non-habitable cellars or non-habitable parts of a space, including the floor area on all storeys if more than one NOTE 1 Internal, overall internal or external dimensions can be used. This leads to different areas for the same building. NOTE 2 Some services, such as lighting or ventilation, might be provided to areas not included in this definition (e.g. a car park). NOTE 3 The precise definition of the conditioned area is given by national authorities. NOTE 4 Conditioned area can be taken as the useful area mentioned in the Articles 5, 6 and 7 of the EPBD2) unless it is otherwise defined in national regulations. 3.27 thermal envelope area total of the area of all elements of a building that
enclose conditioned spaces through which thermal energy is transferred to or from the external environment or to or from unconditioned spaces NOTE 1 Thermal envelope area depends on whether internal, overall internal or external dimensions are being used. NOTE 2 The respective areas of the building envelope may be weighted with a (nationally fixed) reduction factor in case of e.g. unheated adjacent spaces and ground floors. 3.28 energy carrier substance or phenomenon that can be used to produce mechanical work or heat or to operate chemical or physical processes [ISO 13600:1997] NOTE The energy content of fuels is given by their gross calorific value. 3.29 energy need for heating or cooling heat to be delivered to or extracted from a conditioned space by a heating or cooling system to maintain the intended temperature conditions during a given period of time
2) Directive 2002/91/EC of the European Parliament and of the Council of 16 December 2002 on the energy performance of buildings
EN 15217:2007 (E) 9 NOTE 1 The energy need is calculated and cannot easily be measured. NOTE 2 The energy need can include additional heat transfers resulting from non-uniform temperature distribution and non-ideal temperature control, if they are taken into account by increasing (decreasing) the effective temperature for heating (cooling) and not included in the heat transfer due to the heating (cooling) system. 3.30 delivered energy energy, expressed per energy carrier, supplied to the technical building system through the system boundary, to satisfy the uses taken into account (heating, cooling, ventilation, domestic hot water, lighting, appliances etc.) or to produce electricity NOTE 1
For active solar and wind energy systems the incident solar radiation on solar panels or on solar collectors or the kinetic energy of wind is not part of the energy balance of the building. It is decided at national level whether or not renewable energy produced on site is part of the delivered energy. NOTE 2 Delivered energy can be calculated for defined energy uses or it can be measured. 3.31 exported energy energy, expressed per energy carrier, delivered by the technical building systems through the system boundary and used outside the system boundary NOTE 1 It can be specified by generation types (e.g. CHP, photovoltaic) in order to apply different weighting factors. NOTE 2 Exported energy can be calculated or it can be measured. 3.32 net delivered energy delivered energy minus exported energy, both expressed per energy carrier NOTE 1 A balance of the delivered and exported energy per energy carrier can be performed only if the same primary energy factors and/or CO2 coefficients apply to the delivered and exported amounts of that energy carrier. NOTE 2 The term "net" can also be applied to quantities derived from net delivered energy, e.g. primary energy or CO2 emissions. 3.33 primary energy energy that has not been subjected to any conversion or transformation process NOTE 1 Primary energy includes non-renewable energy and renewable energy. If both are taken into account it can be called total primary energy. NOTE 2 For a building, it is the energy used to produce the energy delivered to the building. It is calculated from the delivered and exported amounts of energy carriers, using conversion factors.
EN 15217:2007 (E) 10 4 Symbols and abbreviations Table 1 — Symbols and units Symbol Quantity Unit A area m² AC conditioned area m2 AE thermal envelope area m2 EP energy performance indicator MJ/(m2⋅a), kWh/(m2⋅a), kgCO2/(m2⋅a), €/(m2⋅a) * f factor - R reference
* The unit depends on the indicator chosen. See Clause 5. Table 2 — Subscripts r required by regulation C conditioned s building stock e envelope
5 Energy performance indicators 5.1 Indicators The energy performance of a building is represented by an overall indicator EP that is the weighted algebraic sum of the delivered and exported energy per energy carrier determined according to Clause 5 of prEN 15603, normalized according to 5.3. EP may represent: a) primary energy (Ep); b) CO2 emissions (mCO2); c) net delivered energy weighted by any other parameter defined by national energy policy (e.g. delivered energy, or cost). This overall indicator EP may be complemented by other indicators, for example thermal performance of the building envelope. 5.2 Indicator basis The indicators shall be based on one of the two types of ratings defined in prEN 15603: standard energy rating; measured energy rating. The standard energy rating can be calculated either for planned buildings or for actual buildings. If the indicator is based on a standard energy rating it is called standard energy indicator. If the indicator is based on a measured energy rating it is called measured energy indicator.
EN 15217:2007 (E) 11 5.3 Normalization of energy rating The overall indicator EP is the rating defined in prEN 15603 divided by the conditioned area AC. The type of dimensions used to calculate AC, internal dimensions, external dimensions or overall internal dimensions, shall be specified. NOTE 1 The type of dimensions used has a high impact on the indicator obtained after normalization. For a house of 10 m × 10 m, the indicator obtained using internal dimensions could be 20 % larger than the one obtained with external dimensions. NOTE 2
Usually the choice is the same as for the calculation of the transmission heat transfer (see prEN ISO 13789:2005); in addition, there is a direct correlation with input parameters that are related to the conditioned area (e.g. conventional hot water demand, minimum ventilation, lighting). NOTE 3 An estimate of AC can be obtained from the conditioned volume and mean floor height. 6 Expression of energy requirements 6.1 Ways of expressing the requirements Two main types of requirements are defined: a) overall energy performance requirement in accordance with 6.2; b) specific requirements based on: 1) energy use for specific building services (e.g. heating, domestic hot water, cooling, lighting, ventilation); 2) energy need for heating, domestic hot water and cooling; 3) characteristics of the building itself or of its technical building systems considered as a whole (e.g. heat transfer coefficient of the building envelope, heating, domestic hot water or cooling system efficiency); 4) characteristics of the building envelope or technical building systems components (e.g. thermal transmittance of walls, efficiency of boilers, insulation of heating and hot water pipes, lighting power density (W/m2), specific fan power). Information on possible specific requirements is given in Annex D. An overall indicator may be combined with specific requirements. NOTE Reasons for doing that include: 1) to avoid too large tradeoffs between the performance of the building envelope and the performance of the technical systems; 2) to avoid technical health or discomfort risks; 3) to prevent components with low performance to be put on the market. See Bibliography [1] for more background information on the advantages and disadvantages of additional requirements. The indicators used may be different for: a new building; renovation of an existing building; an extension to an existing building; different types of buildings.
EN 15217:2007 (E) 12 For new buildings and major renovations the requirement shall include one overall energy performance requirement expressed according to 6.2. For partial renovation of existing buildings and for an extension to an existing building where overall requirements might be difficult to apply, simplified approaches based on specific requirements may be used. When specifying these requirements consideration shall be given to the following important energy uses: thermal characteristics of the building structure (envelope insulation and tightness, thermal inertia); heating installation and hot water supply (generation, distribution, emission and control); air conditioning installation (including dehumidification); ventilation (including humidification and heat recovery); built-in lighting installation; passive solar heat sources and solar protection; energy production in particular by renewable sources and co-generation. 6.2 Overall energy requirements The overall energy requirement EPr shall be a limit value of the overall energy performance indicator EP defined in Clause 5. The requirement is written
rEPEP≤ (1) where EP is the overall energy performance indicator; EPr is the limit value which defines the requirement. When a given building has different functions k (e.g. education + sport) with different requirements EPr,k, procedures shall be defined to weight the different requirements. Unless other procedures are specified, the following procedure applies: c1,r,crAEPAEPnkkk∑=⋅= (2) where k represents the functions: k = 1, 2, ., n. The conditioned area of a space that is commonly used for more than one building function shall be proportionally divided over the conditioned areas of these building functions.
EN 15217:2007 (E) 13 6.3 Modification of the impact of certain parameters 6.3.1 General The requirements may be written so as to modify (e.g. reduce, neutralize, correct or normalise) the impact of some parameters. Examples of such parameters are given in Table 3. Table 3 — Parameters with reduced or neutralized impacts Parameter Possible reason Climate To adapt the level of technologies requested to the climate Building function To adapt the requirements to the different designs, uses and feasible technologies Energy carrier For national energy policy regarding the possible use of different energy sources (e.g. gas/electricity), or to take into account the availability of specific energy sources in specific locations Building size and/or shape To avoid unduly onerous requirements on detached houses and too low requirements on large compact buildings. To adapt the requirements to buildings with different sizes and shapes. Ventilation rate To prevent too costly requirements for buildings or uses which require a high ventilation rate Illumination level To prevent too costly requirements for buildings or uses which require a high illumination level The impact of a parameter may be modified either by specifying particular values or procedures for the data used in the calculation of EP (see a)), or by adjustment of the energy performance requirement EPr (see b)). a) Conventional values for climate and occupant related input are defined as described in prEN 15603; b) EPr may be made dependent upon the parameters whose impact is to be reduced. In this case EPr may be defined by either: 1) the formula approach wherein EPr is defined by a simple equation, e.g.: EPr = f (climate, building shape and function etc.), or 2) the notional building approach wherein EPr is the value of EP calculated for a building having the same location, building function, size etc. but with parameters such as insulation level, heating system efficiency, activity schedules, internal heat gains etc. replaced by reference values. NOTE See Bibliography [1] for more background information on different reasons and ways to neutralise the impact of certain parameters and the consequences.
EN 15217:2007 (E) 14
6.3.2 Impact of building shape The building shape is characterised by the building shape factor: f = AE / AC
(3) or the compactness ratio c = AE /
VC (4) where AE
is the thermal envelope area, in m2; AC
is the conditioned area, in m2; VC
is the conditioned volume, in m3. The impact of the building shape is taken into account by introducing the building shape factor or the compactness ratio in the equation expressing EPr. NOTE For example: EPr = EP0 (a + b⋅f ) where a and b are non-dimensional coefficients. 6.3.3 Evolution of the requirements The requirements may be modified throughout time by writing EPr in the following way: dater,rEPEPα= (5) where α
is a strengthening factor between 0 and 1, which evolves with time; EPr,date corresponds to the value of EPr at a given date. 6.4 Renovation of and extensions to existing buildings For minor renovations or extensions, dealing with few single components or subsystems e.g. windows, boilers, artificial lighting installation, the requirements may be set at the component or subsystem level. For large renovations the overall energy performance indicator shall be used but higher values of EPr may be stated. In case of large extension the overall energy performance indicator shall be used but distinct values of EPr may be stated for the existing part and the new part. When the notional building approach is used, the performance of the u
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