SIST EN 16247-2:2014
(Main)Energy audits - Part 2: Buildings
Energy audits - Part 2: Buildings
EN 16247 is applicable to specific energy audit requirements in buildings. It specifies the requirements, methodology and deliverables of an energy audit in a building or group of buildings, excluding individual private dwellings. It shall be applied in conjunction with, and is supplementary to, EN 16247-1, Energy audits - Part 1: General requirements. It provides additional requirements to EN 16247-1 and shall be applied simultaneously. If processes are included in the scope of the energy audit, the energy auditor may choose to apply EN 16247-3, Energy audits - Part 3: Processes. If on-site transport on a site is included in the scope of the energy audit, the energy auditor may choose to apply EN 16247-4, Energy audits - Part 4: Transport.
Energieaudits - Teil 2: Gebäude
Diese Europäische Norm behandelt spezielle Anforderungen eines Energieaudits in Gebäuden. Sie legt Anforderungen, Methodik und Ergebnisse eines Energieaudits in einem Gebäude oder einer Gebäudegruppe unter Ausnahme privater Einzelwohnstätten fest. Sie sollte in Verbindung mit prEN 16247-1, Energieaudits — Teil 1: Allgemeine Anforderungen gelesen werden und ergänzt diese Norm.
Die Anlage, an der das Audit vorzunehmen ist, kann Gebäude mit energieintensiven Verfahren umfassen. In diesem Fall darf sich der Energieauditor für die Anwendung von prEN 16247-3, Energieaudits — Teil 3: Prozesse entscheiden.
Audits énergétiques - Partie 2 : Bâtiments
La présente Norme européenne traite des exigences spécifiques pour les audits énergétiques dans les bâtiments. Elle précise les exigences, la méthodologie et les livrables d'un audit énergétique dans un bâtiment ou groupe de bâtiments, à l'exclusion des habitations privées individuelles. Il convient de la lire en association avec le prEN 16247-1, Audits énergétiques - Partie 1 : Exigences générales, auquel elle est complémentaire.
Le site audité peut inclure des bâtiments qui mettent en œuvre des processus intensifs en énergie. Dans de tels cas, l’auditeur énergétique peut choisir d'appliquer le prEN 16247-3, Audits énergétiques - Partie 3 : Processus.
Energetske presoje - 2. del: Stavbe
EN 16247 velja za določene zahteve energetske presoje v stavbah. Določa zahteve, metodologijo in končne rezultate energetske presoje v stavbi ali skupini stavb, pri čemer so izključeni posamezni zasebni stanovanjski prostori. Uporablja se v povezavi s standardom EN 16247-1, Energetske presoje - 1. del: Splošne zahteve in kot njegov dodatek. Zagotavlja dodatne zahteve standarda EN 16247-1 in se mora uporabljati istočasno. Če so procesi vključeni v področje uporabe energetske presoje, energetski presojevalec lahko uporabi standard EN 16247-3, Energetske presoje - 3. del: Procesi. Če je transport na kraju samem vključen v področje uporabe energetske presoje, energetski presojevalec lahko uporabi standard EN 16247-4, Energetske presoje - 4. del: Transport.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Energetske presoje - 2. del: StavbeEnergieaudits - Teil 2: GebäudeAudits énergétiques - Partie 2 : BâtimentsEnergy audits - Part 2: Buildings91.040.01Stavbe na splošnoBuildings in general27.010Prenos energije in toplote na splošnoEnergy and heat transfer engineering in general03.120.10Vodenje in zagotavljanje kakovostiQuality management and quality assuranceICS:Ta slovenski standard je istoveten z:EN 16247-2:2014SIST EN 16247-2:2014en,fr,de01-julij-2014SIST EN 16247-2:2014SLOVENSKI
STANDARD
SIST EN 16247-2:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16247-2
May 2014 ICS 03.120.10; 27.010; 91.140.01
English version
Energy audits - Part 2: Buildings
Audits énergétiques - Partie 2 : Bâtiments
Energieaudits - Teil 2: Gebäude This European Standard was approved by CEN on 27 May 2014.
CEN and CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN and CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels © 2014 CEN/CENELEC All rights of exploitation in any form and by any means reserved worldwide for CEN national Members and for CENELEC Members. Ref. No. EN 16247-2:2014 E
SIST EN 16247-2:2014
EN 16247-2:2014 (E) 2 Contents Page Foreword . 4 0 Introduction . 5 1 Scope. 6 2 Normative references . 6 3 Terms and definitions . 6 4 Quality requirements . 8 4.1 Energy auditor . 8 4.1.1 Competency . 8 4.1.2 Confidentiality . 8 4.1.3 Objectivity . 8 4.1.4 Transparency . 8 4.2 Energy audit process. 8 5 Elements of the energy audit process . 8 5.1 Preliminary contact . 8 5.2 Start-up meeting . 9 5.3 Collecting data . 10 5.3.1 General . 10 5.3.2 Information request . 10 5.3.3 Review of the available data . 11 5.3.4 Preliminary data analysis . 11 5.4 Field work . 12 5.4.1 Aim of field work . 12 5.4.2 Conduct . 12 5.4.3 Site visits . 12 5.5 Analysis . 13 5.5.1 General . 13 5.5.2 Energy breakdown . 13 5.5.3 Energy performance indicators . 14 5.5.4 Energy efficiency improvement opportunities . 14 5.6 Report . 14 5.6.1 General . 14 5.6.2 Content of report . 14 5.7 Final meeting . 15 Annex A (informative)
Energy audit process flow diagram . 16 Annex B (informative)
Examples of parties of an energy audit in buildings . 17 Annex C (informative)
Examples of the scope, aim and thoroughness of energy audits in buildings . 18 Annex D (informative)
Examples of checklists for energy audit field work in buildings . 20 Annex E (informative)
Examples of the analysis of energy use in buildings . 24 Annex F (informative)
Examples of analysis checklists for energy audits in buildings . 28 Annex G (informative)
Examples of energy performance indicators in buildings . 31 Annex H (informative)
Examples of energy efficiency improvement
opportunities in buildings . 32 SIST EN 16247-2:2014
EN 16247-2:2014 (E) 3 Annex I (informative)
Examples of analysis and savings calculations
in energy audits in buildings . 33 Annex J (informative)
Examples of the reporting of an energy audit in buildings . 40 Annex K (informative)
Example of energy improvement verification method in buildings . 42 Bibliography . 44 SIST EN 16247-2:2014
EN 16247-2:2014 (E) 4 Foreword This document (EN 16247-2:2014) has been prepared by Technical Committee CEN/CLC/JWG 1 “Energy audits”, the secretariat of which is held by BSI. 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 November 2014 and conflicting national standards shall be withdrawn at the latest by November 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This Part provides additional material to Part 1 for the Buildings sector and should be used in conjunction with Part 1. This European Standard is part of the series EN 16247 “Energy audits” which comprises the following: — Part 1 General requirements; — Part 2 Buildings; — Part 3 Processes; — Part 4 Transport; — Part 5 Competence of energy auditors. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16247-2:2014
EN 16247-2:2014 (E) 5 0 Introduction An energy audit can help an organization to identify opportunities to improve energy efficiency. It can be part of a site wide energy management system. The use and operation of buildings requires the provision of services such as heating, cooling, ventilation, lighting, domestic hot water, transportation systems (e.g. elevators, escalators and moving walkways) in buildings and processes. In addition, energy is used by appliances within the building. The energy consumption depends on: — local climatic conditions; — the characteristics of the building envelope; — the designed indoor environment conditions; — the characteristics and settings of the technical building systems; — activities and processes in the building; — occupant behaviour and operational regime. Dealing with buildings, the audited objects are sometimes similar, technically simple and numerous (as in the residential sector) but can also be unique, complex and highly technical (such as hospitals, swimming pools and spas, etc.). Energy audits in buildings may include the whole building or parts of the building or some technical system. Energy performance indicators (benchmark values, if available) or average statistical specific energy consumption data are usually published nationally for different building types and ages. This information can be used in the analysis to provide comparative energy performance evaluation. NOTE The energy audits covered under this standard might be independent from building energy performance certification and other legislative requirements. SIST EN 16247-2:2014
EN 16247-2:2014 (E) 6 1 Scope This European Standard is applicable to specific energy audit requirements in buildings. It specifies the requirements, methodology and deliverables of an energy audit in a building or group of buildings, excluding individual private dwellings. It shall be applied in conjunction with, and is supplementary to, EN 16247-1, Energy audits — Part 1: General requirements. It provides additional requirements to EN 16247-1 and shall be applied simultaneously. If processes are included in the scope of the energy audit, the energy auditor may choose to apply EN 16247-3, Energy audits — Part 3: Processes. If on-site transport on a site is included in the scope of the energy audit, the energy auditor may choose to apply EN 16247-4, Energy audits — Part 4: Transport. NOTE This standard may cover multi-dwelling apartment blocks where communal services are supplied from a landlord. It is not intended for individual dwellings and single family houses. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 16247-1, Energy audits - Part 1: General requirements EN 15603, Energy performance of buildings - Overall energy use and definition of energy ratings 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 16247-1 and the following apply. 3.1 building construction as a whole, including its envelope and all technical building systems, for which energy may be used to condition the indoor climate, to provide domestic hot water and illumination and other services related to the use of the building and the activities performed within the building Note 1 to entry: The term can refer to the building as a whole or to parts thereof that have been designed or altered to be used separately. Note 2 to entry:
The building could include its site location and related external environment. 3.2 system boundary boundary that includes within it all areas associated with the audited object (both inside and outside the audited object) where energy is consumed or produced Note 1 to entry: Inside the system boundary the system losses are taken into account explicitly, outside the system boundary they are taken into account in a conversion factor. SIST EN 16247-2:2014
EN 16247-2:2014 (E) 7 3.3 energy need energy to be delivered to or extracted from a building in a defined time period by a technical system to provide a building service 3.4 energy carrier substance or physical phenomenon that can be used directly or indirectly to be transformed into useful energy Note 1 to entry: The default energy content of fuels is gross calorific value. 3.5 delivered energy (final energy) energy, expressed per energy carrier, supplied to the technical building systems through the system boundary, to satisfy the uses taken into account or to produce electricity Note 1 to entry: Delivered energy can be calculated for defined energy uses or it can be measured. Note 2 to entry: Energy uses include heating, cooling, ventilation, domestic hot water, lighting, appliances, etc. 3.6 produced energy heat or electricity generated within the system boundary Note 1 to entry: Produced energy can be used within the system boundary or exported. 3.7 exported energy energy, expressed for each energy carrier, delivered by the technical building systems through the system boundary and used outside the system boundary Note 1 to entry: It can be specified by generation types (e.g. CHP, photovoltaic, etc) in order to apply different weighting factors. Note 2 to entry: Exported energy can be calculated or it can be measured. [SOURCE: CEN/TR 15615, 3.19] 3.8 building services the services provided by the technical building systems and by appliances to condition the indoor environment (thermal comfort, air quality, visual and acoustic quality) and other services related to the use of the building 3.9 technical building system technical equipment for heating, cooling, ventilation, domestic hot water, lighting and on-site energy production Note 1 to entry: A technical building system can refer to one or a combination of building services (e.g. heating system include heating, domestic hot water system and controls). Note 2 to entry: A technical building system is composed of different subsystems and includes controls. Note 3 to entry: On-site energy production can include heat or electricity. SIST EN 16247-2:2014
EN 16247-2:2014 (E) 8 4 Quality requirements 4.1 Energy auditor 4.1.1 Competency The energy auditor shall demonstrate that they have qualifications or experience covering the scope, complexity and thoroughness of the audit.
NOTE See prEN 16247–51. 4.1.2 Confidentiality The energy auditor shall respect all the legal and commercial confidentiality requirements agreed with the organization, which cover all parties involved, such as tenants, maintenance organizations, building occupants. 4.1.3 Objectivity Objectivity is defined in EN 16247-1, 4.1.3 4.1.4 Transparency Transparency is defined in EN 16247-1, 4.1.4 4.2 Energy audit process When a sampling method is used, any selected sample of spaces, systems or equipment shall be representative of the whole building or of a group of buildings. NOTE See Informative Annex A: A flow diagram of the energy audit process. 5 Elements of the energy audit process 5.1 Preliminary contact The energy auditor shall identify all parties/organizations and their roles in ownership, management, use, operation and maintenance of the building and their respective impacts and interests on energy use and consumption.
NOTE 1 See Informative Annex B: Examples of parties of an energy audit in buildings. The scope of the audit should be agreed to cover technical interaction of the systems within the building, and the interaction of the systems with the building. Optimization of some specific sector to the exclusion of others may give misleading results. The agreed aims of the energy audit may contain: a) reducing energy consumption and costs; b) reducing environmental impact;
1 prEN 16247-5 is currently not yet published and is under development. SIST EN 16247-2:2014
EN 16247-2:2014 (E) 9 c) complying with legislation or with voluntary obligations. The energy audit scope and boundaries shall define what is included, in terms of: a) which buildings from a list of buildings or parts of a building; b) which energy services; c) which technical building systems; d) which areas and systems outside the building; e) which energy performance indicators could be used as appropriate to the audit. The energy audit degree of thoroughness shall be agreed, taking into account that it will impact: a) time on site; b) choice of samples; c) level of modelling; d) requirements for measurements; e) level of metering, including sub-metering; f) level of defining the energy efficiency improvement opportunities; g) required auditor’s skills. NOTE 2 See Informative Annex C: Examples of the scope, aim and thoroughness of energy audits in buildings. 5.2 Start-up meeting During the start-up meeting the energy auditor shall agree with the organization on: a) timing of site visits, e.g. whether within or outside normal working hours; b) level of occupant engagement; c) areas of restricted access; d) potential health hazards and risks. The energy auditor shall, where available, obtain from the organization: a) set-points and operational limits of indoor environmental conditions (such as temperatures, air flows, illuminance, noise) and any seasonal variations; b) occupancy patterns for the different range of activities within the building; c) comments from any occupant or other party on operational performance of the building and the level of the building service; d) energy certificates prepared for the building; SIST EN 16247-2:2014
EN 16247-2:2014 (E) 10 e) whether any building occupant awareness or motivation programmes have been implemented. 5.3 Collecting data 5.3.1 General The data collection shall be appropriate to the scope of the energy audit. 5.3.2 Information request The energy auditor shall collect with the organization the following data as required by the scope of the energy audit: a) energy carriers, present and available; b) energy related data: 1) delivered, produced and exported energy, for each energy carrier (for example identify the energy streams for a CHP unit, or for photovoltaic systems where production is used locally or exported); 2) energy consumption data (or readings with related time and date) of any available meters or counters (e.g. heat meter, domestic hot water meter, fuel meter, burner hour counter); 3) data from individual metering, if available; 4) short-interval (e.g. hourly) energy demand / load curve, if available; 5) relevant related measurements; The frequency of the data should be appropriate to the scope and thoroughness of the energy audit. Building energy audits typically deal with monthly consumption data. The energy related data should be recorded by the building and control system if available. c) adjustment factors affecting energy consumption: 1) climatic data (e.g. temperature, degree-days, hygrometry, lighting) from the local building automation and control system (BACS), if available; 2) occupancy patterns; Information for quantifying the adjustment factors affecting energy consumption should be recorded by the building control system if available (e.g. occupancy times, degree-hours etc). d) information on important changes in the past 3 years or the period covered by the available operational data, concerning: 1) the physical form of the building; 2) the spaces – either in dimension and/or in use; 3) the building envelope (renovation of windows, added insulation, etc.); 4) the technical building systems and the areas they serve; 5) the tenant arrangements; SIST EN 16247-2:2014
EN 16247-2:2014 (E) 11 6) occupancy of spaces (different occupancy times, extended hours behaviour and internal loads); 7) set points and occupant behaviour; e) values to be used, adapted to the local /national performance indicators (if relevant): 1) floor area; 2) building volume; 3) others; f) existing design, operation and maintenance documents and information, such as: 1) as-built building plans; 2) any external factors that may influence the energy performance of the building (e.g. shading by adjacent trees or buildings); 3) indications of supplied building services (i.e. which rooms or zones are heated, cooled, ventilated) on the building lay-out plan; 4) technical building system schematics, indicating the system zones, if any; 5) control diagrams and settings; 6) appliance and component data and ratings; g) the building information model (BIM) and/or design models of the building, if available; h) energy using equipment in the occupied spaces and other internal loads. 5.3.3 Review of the available data The energy auditor shall review the information collected and provided by the organization. The energy auditor shall review the scope and boundaries of the energy audit if it is deemed appropriate once initial information has been received. The energy auditor shall judge whether or not the information provided by the organization allows the energy audit process to continue and the agreed objectives to be achieved. Where there is missing data the client will be given a choice to produce the missing data or accept that the auditor will have to make assumptions (that will be clearly detailed). The energy auditor shall, based on experience and competence, choose the energy using systems and items to be checked on site, depending on the aim, scope and thoroughness of the energy audit. 5.3.4 Preliminary data analysis The energy auditor shall carry out an analysis of the data collected to: a) undertake a preliminary analysis of the audited object’s energy balance on the basis of energy data; b) establish the relevant adjustment factors; SIST EN 16247-2:2014
EN 16247-2:2014 (E) 12 c) establish the relevant energy performance indicators; d) evaluate the distribution of energy consumption (consumption breakdown) if possible, depending on the measured data available; e) if there is sufficient information, establish an initial energy reference (energy baseline) to be used for quantifying the impacts of energy saving interventions; f) plan further data collection and measurement to be carried out during field work. The energy auditor should develop a preliminary list of energy efficiency improvement opportunities. 5.4 Field work 5.4.1 Aim of field work The energy auditor shall inspect the audited object(s) within the scope of the audit. The energy auditor shall: a) inspect the site against the data received; b) evaluate for each significant building service the actual and future level of service (e.g. temperature, humidity, illuminance level, etc.); c) check that the technical systems are adequate for the intended purpose, i.e. can deliver the required level of service; d) evaluate the performance of the technical systems, taking into account the generation, storage, distribution and emission system and control; e) understand the drivers for the changes in the technical systems, such as seasonal demands; f) look for energy efficiency improvement opportunities and related constraints and restrictions. NOTE See Informative Annex D: Checklist for energy audit field work in buildings. 5.4.2 Conduct The conduct of an energy auditor during field work is defined in EN 16247-1, 5.4.2. 5.4.3 Site visits Site visits are defined in EN 16247-1, 5.4.3. The energy auditor shall ask the organization to: a) arrange access (read only) to building automation and control system (BACS) and electronic data sources; b) provide authorized assistance for any tests and operations required in the energy audit, e.g. switching on or off systems and equipment; c) arrange access to the parts of the building which are defined as relevant for conducting the energy audit. SIST EN 16247-2:2014
EN 16247-2:2014 (E) 13 5.5 Analysis 5.5.1 General In an energy audit in buildings the auditor shall analyse the energy saving potential according to the scope and aim of the audit. The analysis shall deliver at least: a) for each building service a comparison of actual against appropriate level of service (such as indoor environmental criteria, etc). The level of service (e.g. temperature, quality of air, illuminance) shall not be compromised by any proposed energy saving measures. Legislative compliance notwithstanding,the level of service may, however, be changed if agreed with the client (e.g. change of indoor temperature to reduce heating or cooling demands); b) evaluation of the actual performance of the technical systems against a suitable reference; c) evaluation of the performance of the building envelope; NOTE Levels of insulation, thermal bridges, air tightness etc. d) evaluation of the energy performance of the whole building, taking into account the potential interaction between technical systems and the building envelope. When considering improvements, the energy auditor shall: a) consider the interaction between the technical building systems, with the building envelope, external environment and the activities performed within the building. EN 15603:2008 allows the quantification of this interaction; b) take into account all possible impacts for all delivered energy for different time periods (e.g. occupied and unoccupied) and different seasons, that could lead to adverse situations regarding energy savings. (For example, replacement of lighting may decrease internal heat gains, thereby increasing heating loads and reducing cooling loads); c) evaluate potential impact that energy saving interventions will have on the ratings in the energy performance certificates. The energy audit should include a review of contracts for the supply of energy and the requirements for the inspection and maintenance of technical equipment in terms of impact on energy efficiency and the cost. 5.5.2 Energy breakdown The energy auditor details: a) breakdown of the delivered energy by energy carrier in terms of consumption, cost and emissions in consistent units (e.g. pie-charts); b) breakdown the energy end-use by service and other use in absolute or specific numbers and in consistent energy units (e.g. pie-charts); c) if applied, inventory of installed onsite energy production and export to third parties, in absolute numbers. The energy breakdown shall be representative of the energy input and energy use. Also, it shall be clear which energy flows are based on measurements and which on estimations/calculations. SIST EN 16247-2:2014
EN 16247-2:2014 (E) 14 NOTE 1 See Informative Annex E: Examples of the analysis of energy use in buildings. NOTE 2 See Informative Annex F: Examples of analysis checklist for energy audits in buildings. 5.5.3 Energy performance indicators The calculation of the energy performance indicators (specific energy use) or building specific baselines shall be included in the analysis as appropriate. The energy auditor and organization shall agree on the energy performance metric(s) to be used. NOTE See Informative Annex G: Examples
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SLOVENSKI SIST EN 16247-2
STANDARD
julij 2014
Energetske presoje – 2. del: Stavbe
Energy audits – Part 2: Buildings
Audits énergétiques – Partie 2: Bâtiments
Energieaudits – Teil 2: Gebäude
Referenčna oznaka
ICS 03.120.10; 27.010; 91.040.01 SIST EN 16247-2:2014 (sl)
Nadaljevanje na straneh II in od 1 do 40
© 2015-11. Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 16247-2 : 2014
NACIONALNI UVOD
Standard SIST EN 16247-2 (sl), Energetske presoje – 2. del: Stavbe, 2014, ima status slovenskega
standarda in je istoveten evropskemu standardu EN 16247-2 (en), Energy audits – Part 2: Buildings,
2014.
NACIONALNI PREDGOVOR
Evropski standard EN 16247-2:2014 je pripravilo združeno tehnično delovno telo CEN/CLC/JWG 1
Energetske presoje.
Slovenski standard SIST EN 16247-2:2014 je prevod evropskega standarda EN 16247-2:2014. V
primeru spora glede besedila slovenskega prevoda v tem standardu je odločilen izvirni evropski
standard v angleškem jeziku. Slovensko izdajo standarda je potrdil Strokovni svet SIST za področje
elektrotehnike, informacijske tehnologije in telekomunikacij.
V Republiki Sloveniji se za izraz "energetska presoja", ki je v standardu SIST EN 16247-1:2012
definiran v točki 3.1, uporablja tudi izraz "energetski pregled", kot je uporabljen v Energetskem zakonu
(EZ-1) (Uradni list RS, št. 17/2014) in na njegovi podlagi izdanih podzakonskih predpisih.
Odločitev za privzem tega standarda je v juliju 2014 sprejel Strokovni svet SIST za področja
elektrotehnike, informacijske tehnologije in telekomunikacij.
ZVEZA Z NACIONALNIMI STANDARDI
S privzemom tega evropskega standarda veljajo za omenjeni namen referenčnih standardov vsi
standardi, navedeni v izvirniku, razen tistih, ki so že sprejeti v nacionalno standardizacijo:
SIST EN 16247-1 Energetske presoje – 1. del: Splošne zahteve
SIST EN 15603 Energijske karakteristike stavb – Splošna raba energije in opredelitev potreb
po energiji
OSNOVA ZA IZDAJO STANDARDA
– privzem standarda EN 16247-2:2014
OPOMBE
– Povsod, kjer se v besedilu standarda uporablja izraz “evropski standard”, v SIST EN 16247-
2:2014 to pomeni “slovenski standard”.
– Nacionalni uvod in nacionalni predgovor nista sestavni del standarda.
– Ta nacionalni dokument je istoveten EN 16247-2:2014 in je objavljen z dovoljenjem
CEN/CENELEC
Upravni center
Avenue Marnix 17
B-1000 Bruselj
This national document is identical with EN 16247-2:2014 and is published with the
permission of
CEN/CENELEC
Management Centre
Avenue Marnix 17
B -1000 Brussels
II
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EVROPSKI STANDARD EN 16247-2
EUROPEAN STANDARD
EUROPÄISCHE NORM
NORME EUROPÉENNE maj 2014
ICS: 27.140
Slovenska izdaja
Energetske presoje – 2. del: Stavbe
Energy audits – Audits énergétiques – Energieaudits –
Part 2: Buildings Partie 2: Bâtiments Teil 2: Gebäude
Ta evropski standard je CEN sprejel 27. maja 2014.
Člani CEN in CENELEC morajo izpolnjevati notranje predpise CEN/CENELEC, s katerimi je
predpisano, da mora biti ta standard brez kakršnih koli sprememb sprejet kot nacionalni standard.
Seznami najnovejših izdaj teh nacionalnih standardov in njihovi bibliografski podatki so na voljo pri
upravnem centru CEN-CENELEC ali članih CEN in CENELEC.
Ta evropski standard obstaja v treh uradnih izdajah (angleški, francoski in nemški). Izdaje v drugih
jezikih, ki jih člani CEN in CENELEC na lastno odgovornost prevedejo in izdajo ter prijavijo pri
upravnem centru CEN-CENELEC, veljajo kot uradne izdaje.
Člani CEN in CENELEC so nacionalni organi za standarde in nacionalni elektrotehniški komiteji
Avstrije, Belgije, Bolgarije, Cipra, Češke republike, Danske, Estonije, Finske, Francije, Grčije, Hrvaške,
Irske, Islandije, Italije, Latvije, Litve, Luksemburga, Madžarske, Malte, Nekdanje jugoslovanske
republike Makedonije, Nemčije, Nizozemske, Norveške, Poljske, Portugalske, Romunije, Slovaške,
Slovenije, Španije, Švedske, Švice, Turčije in Združenega kraljestva.
CEN CENELEC
Evropski komite za standardizacijo Evropski komite za standardizacijo v elektrotehniki
European Committee for Standardization European Committee for Electrotechnical Standardization
Europäisches Komitee für Normung Europäisches Komitee für Elektrotechnische Normung
Comité Européen de Normalisation Comité Européen de Normalisation Electrotechnique
Upravni center CEN-CENELEC: Avenue Marnix 17, B-1000 Bruselj
© 2014 Lastnice avtorskih pravic so vse države članice CEN in CENELEC. Ref. oznaka EN 16247-2:2014 E
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VSEBINA Stran
Predgovor . 4
0 Uvod . 5
1 Področje uporabe . 6
2 Zveze s standardi . 6
3 Izrazi in definicije . 6
4 Zahteve za kakovost . 7
4.1 Energetski presojevalec . 7
4.1.1 Kompetentnost . 7
4.1.2 Zaupnost . 7
4.1.3 Objektivnost . 8
4.1.4 Preglednost . 8
4.2 Proces energetske presoje . 8
5 Elementi procesa energetske presoje . 8
5.1 Začetni stik . 8
5.2 Uvodni sestanek . 9
5.3 Zbiranje podatkov . 9
5.3.1 Splošno . 9
5.3.2 Zahteve po informacijah . 9
5.3.3 Pregled razpoložljivih podatkov . 10
5.3.4 Predhodna analiza podatkov . 10
5.4 Terensko delo . 11
5.4.1 Namen terenskega dela . 11
5.4.2 izvajanje . 11
5.4.3 Obiski mesta presoje . 11
5.5 Analiza . 11
5.5.1 Splošno . 11
5.5.2 Razčlenitev energije . 12
5.5.3 Kazalniki energetske učinkovitosti . 12
5.5.4 Priložnosti za izboljšanje energijske učinkovitosti . 12
5.6 Poročilo . 13
5.6.1 Splošno . 13
5.6.2 Vsebina poročila . 13
5.7 Zaključni sestanek . 13
Dodatek A (informativni): Diagram poteka procesa energetske presoje . 14
Dodatek B (informativni): Primeri strank energetske presoje v stavbah . 15
Dodatek C (informativni): Primeri obsega, cilja in temeljitosti energetskih presoj v stavbah . 16
Dodatek D (informativni): Primeri kontrolnih seznamov za terensko delo v okviru energetske
presoje v stavbah . 18
Dodatek E (informativni): Primeri analize rabe energije v stavbah . 22
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Dodatek F (informativni): Primeri kontrolnih seznamov za analizo za energetske presoje
v stavbah . 25
Dodatek G (informativni): Primeri kazalnikov energetske učinkovitosti v stavbah . 28
Dodatek H (informativni): Primeri priložnosti za izboljšanje energetske učinkovitosti v stavbah . 29
Dodatek I (informativni): Primeri analize in izračunov prihrankov za energetske presoje
v stavbah . 30
Dodatek J (informativni): Primeri poročanja o energetski presoji v stavbah . 36
Dodatek K (informativni): Primer metode za preverjanje izboljšanja rabe energije v stavbah . 38
Literatura. 40
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Predgovor
Ta dokument (EN 16247-2:2014) je pripravil tehnični odbor CEN/CLC/JWG 1 Energetske presoje,
katerega sekretariat vodi BSI.
Ta evropski standard mora dobiti status nacionalnega standarda z objavo istovetnega besedila ali z
razglasitvijo najpozneje do novembra 2014 in do istega roka morajo biti razveljavljeni tudi morebitni
nasprotujoči nacionalni standardi.
Opozoriti je treba na možnost, da so lahko nekateri elementi tega dokumenta predmet patentnih
pravic. CEN [in/ali CENELEC] ne prevzema odgovornosti za identifikacijo nekaterih ali vseh takih
patentnih pravic.
Ta del vsebuje dodatno gradivo k 1. delu za področje stavb in naj se uporablja skupaj s 1. delom.
Ta evropski standard je del skupine standardov EN 16247, Energetske presoje, ki obsega naslednje
dele:
– 1. del: Splošne zahteve
– 2. del: Stavbe
– 3. del: Procesi
– 4. del: Transport
– 5. del: Kompetence energetskih presojevalcev
V skladu z notranjimi predpisi CEN-CENELEC morajo ta evropski standard obvezno uvesti nacionalne
organizacije za standarde naslednjih držav: Avstrije, Belgije, Bolgarije, Cipra, Češke, Danske,
Estonije, Finske, Francije, Grčije, Hrvaške, Irske, Islandije, Italije, Latvije, Litve, Luksemburga,
Madžarske, Malte, Nekdanje jugoslovanske republike Makedonije, Nemčije, Nizozemske, Norveške,
Poljske, Portugalske, Romunije, Slovaške, Slovenije, Španije, Švedske, Švice, Turčije in Združenega
kraljestva.
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0 Uvod
Energetska presoja lahko organizaciji pomaga identificirati priložnosti za izboljšanje energijske
učinkovitosti. Lahko je del širšega sistema upravljanja z energijo organizacije.
Uporaba in delovanje stavb zahtevata vrsto storitev, kot so ogrevanje, hlajenje, prezračevanje,
osvetlitev, sanitarna topla voda, transportni sistemi (npr. dvigala, tekoče stopnice in premične steze) v
stavbah in procesih. Poleg tega energijo rabijo aparati v stavbi.
Poraba energije je odvisna od:
– lokalnih podnebnih razmer,
– značilnosti ovoja stavbe,
– zasnovanih notranjih okoljskih razmer,
– značilnosti in nastavitev tehničnih sistemov v stavbi,
– dejavnosti in procesov v stavbi,
– obnašanja stanovalcev in obratovalnega režima.
Na področju presojanja stavb so si predmeti presoje včasih podobni, tehnično enostavni in številčni
(npr. v stanovanjskem sektorju), vendar so lahko tudi edinstveni, zapleteni ter tehnično zelo zahtevni
(kot so bolnišnice, plavalni bazeni in zdravilišča itd.).
Energetske presoje v stavbah lahko zajemajo celotno stavbo, dele stavbe ali posamezen tehnični
sistem.
Kazalniki energetske učinkovitosti (primerjalne vrednosti, če so na voljo) ali podatki o povprečni
statistični specifični porabi energije so po navadi objavljeni na nacionalni ravni za različne vrste in
starosti stavb. Ti podatki se lahko uporabijo pri analizi za zagotavljanje primerjalnega vrednotenja
energetske učinkovitosti.
OPOMBA: Energetske presoje, obravnavane v tem standardu, so lahko neodvisne od certificiranja energetske učinkovitosti
stavb in drugih zakonodajnih zahtev.
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1 Področje uporabe
Ta evropski standard se uporablja za posebne zahteve energetske presoje v stavbah. Določa zahteve,
metodologijo in končne izsledke energetske presoje v stavbi ali skupini stavb, razen posameznih
zasebnih stanovanjskih prostorov. Uporablja se v povezavi z EN 16247-1, Energetske presoje – 1. del:
Splošne zahteve, ki ga dopolnjuje. Vsebuje dodatne zahteve k standardu EN 16247-1 in ju je treba
uporabljati hkrati.
Če so v obseg energetske presoje vključeni procesi, lahko energetski presojevalec uporabi standard
EN 16247-3, Energetske presoje – 3. del: Procesi. Če je v obseg energetske presoje vključen
transport znotraj mesta presoje, lahko energetski presojevalec uporabi standard EN 16247-4,
Energetske presoje – 4. del: Transport.
OPOMBA: Ta standard lahko obravnava večstanovanjske bloke, kadar skupne storitve zagotavlja najemodajalec. Standard
ni namenjen obravnavi posameznih stanovanj in enodružinskih hiš.
2 Zveze s standardi
Za uporabo tega standarda so, delno ali v celoti, nujno potrebni spodaj navedeni referenčni
dokumenti. Pri datiranih sklicevanjih se uporablja le navedena izdaja. Pri nedatiranih sklicevanjih se
uporablja zadnja izdaja publikacije (vključno z dopolnili).
EN 16247-1 Energetske presoje – 1. del: Splošne zahteve
EN 15603 Energijske karakteristike stavb – Splošna raba energije in opredelitev potreb po energiji
3 Izrazi in definicije
V tem evropskem standardu se uporabljajo izrazi in definicije, navedeni v standardu EN 16247-1, ter
naslednji:
3.1
stavba
konstrukcija kot celota, vključno z njenim ovojem in vsemi tehničnimi sistemi v stavbi, za katere se
lahko rabi energija za prilagajanje notranjega ozračja, zagotavljanje sanitarne tople vode in
osvetljevanja ter za druge storitve, povezane z uporabo stavbe in dejavnostmi, ki se izvajajo v stavbi
OPOMBA 1 k izrazu: Izraz se lahko nanaša na stavbo kot celoto ali na njene dele, ki so bili zasnovani ali spremenjeni, da
bi se omogočila njihova ločena uporaba.
OPOMBA 2 k izrazu: Stavba lahko zajema lokacijo, na kateri se nahaja, in povezano zunanje okolje.
3.2
meja sistema
meja, ki zajema vsa območja, povezana s presojanim predmetom (tako v njem kot zunaj njega), v
katerih se energija porablja ali proizvaja
OPOMBA 1 k izrazu: Znotraj meje sistema se izgube v sistemu upoštevajo eksplicitno, zunaj meje sistema pa se
upoštevajo v pretvorniku.
3.3
potreba po energiji
energija, ki jo mora tehnični sistem dobaviti stavbi ali odstraniti iz nje v določenem časovnem obdobju,
da se zagotovi storitev, povezana s stavbo
3.4
energetski nosilec
snov ali fizikalni pojav, ki se lahko uporablja neposredno ali posredno za pretvorbo v koristno energijo
OPOMBA 1 k izrazu: Privzeta energijska vsebnost goriv je bruto kalorična vrednost.
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3.5
dobavljena energija (končna energija)
energija, izražena na energetski nosilec, dobavljena tehničnim sistemom v stavbi prek meje sistema,
da se zadovoljijo upoštevane uporabe ali proizvede elektrika
OPOMBA 1 k izrazu: Dobavljena energija se lahko izračuna za opredeljene rabe energije ali pa se lahko izmeri.
OPOMBA 2 k izrazu: Med rabe energije spadajo ogrevanje, hlajenje, prezračevanje, sanitarna topla voda, osvetlitev,
aparati itd.
3.6
proizvedena energija
toplota ali elektrika, proizvedena znotraj meje sistema
OPOMBA 1 k izrazu: Proizvedena energija se lahko uporabi znotraj meje sistema ali izvozi.
3.7
izvožena energija
energija, izražena za vsak energetski nosilec, ki jo tehnični sistemi v stavbi dobavijo prek meje sistema
in se uporablja zunaj meje sistema
OPOMBA 1 k izrazu: Opredeli se lahko glede na vrsto proizvodnje (npr. soproizvodnja toplote in elektrike, fotonapetostna
proizvodnja itd.), da se uporabi različno ponderiranje.
OPOMBA 2 k izrazu: Izvožena energija se lahko izračuna ali izmeri.
[VIR: CEN/TR 15615, 3.19]
3.8
storitve v stavbi
storitve, ki jih zagotavljajo tehnični sistemi v stavbi in aparati za prilagajanje notranjega okolja (toplotno
ugodje, kakovost zraka, vizualna in akustična kakovost), ter druge storitve, povezane z uporabo
stavbe
3.9
tehnični sistem v stavbi
tehnična oprema za ogrevanje, hlajenje, prezračevanje, sanitarno toplo vodo, osvetlitev in proizvodnjo
energije na kraju samem
OPOMBA 1 k izrazu: Tehnični sistem v stavbi se lahko nanaša na posamezno storitev v stavbi ali njihovo kombinacijo
(npr. sistem ogrevanja vključuje ogrevanje, sistem sanitarne tople vode in izvršne elemente).
OPOMBA 2 k izrazu: Tehnični sistem v stavbi je sestavljen iz različnih podsistemov in vključuje izvršne elemente.
OPOMBA 3 k izrazu: Proizvodnja energije na kraju samem lahko zajema toploto ali elektriko.
4 Zahteve za kakovost
4.1 Energetski presojevalec
4.1.1 Kompetentnost
Energetski presojevalec mora dokazati, da je ustrezno usposobljen ali izkušen za obseg,
kompleksnost in temeljitost presoje.
1
OPOMBA: Glej prEN 16247-5 .
4.1.2 Zaupnost
Energetski presojevalec mora spoštovati vse pravne in poslovne zahteve glede zaupnosti,
dogovorjene z organizacijo, ki zajemajo vse vključene stranke, kot so najemniki, vzdrževalne
organizacije in stanovalci v stavbi.
1
prEN 16247-5 še ni izdan in je še v pripravi.
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4.1.3 Objektivnost
Objektivnost je opredeljena v EN 16247-1, 4.1.3.
4.1.4 Preglednost
Preglednost je opredeljena v EN 16247-1, 4.1.4.
4.2 Proces energetske presoje
Kadar se uporablja metoda vzorčenja, morajo biti vsi izbrani vzorci prostorov, sistemov ali opreme
reprezentativni za celotno stavbo ali skupino stavb.
OPOMBA: Glej informativni dodatek A: Diagram poteka procesa energetske presoje.
5 Elementi procesa energetske presoje
5.1 Začetni stik
Energetski presojevalec mora identificirati vse stranke/organizacije in njihove vloge v lastništvu,
upravljanju, uporabi, delovanju in vzdrževanju stavbe ter njihove vplive in interese v zvezi z rabo in
porabo energije.
OPOMBA 1: Glej informativni dodatek B: Primeri strank energetske presoje v stavbah.
Obseg presoje naj zajema dogovorjene tehnične medsebojne vplive sistemov v stavbi ter medsebojne
vplive sistemov in stavbe. Optimizacija posameznega sektorja na račun izključitve drugih lahko poda
zavajajoče rezultate.
Dogovorjeni cilji energetske presoje lahko vključujejo:
a) zmanjšanje porabe energije in stroškov,
b) zmanjšanje vpliva na okolje,
c) skladnost z zakonodajo ali prostovoljnimi obveznostmi.
V obsegu in mejah energetske presoje mora biti opredeljeno, kaj je vključeno, in sicer:
a) katere stavbe s seznama stavb ali deli stavb,
b) katere energetske storitve,
c) kateri tehnični sistemi v stavbi,
d) katera območja in sistemi zunaj stavbe,
e) kateri kazalniki energetske učinkovitosti se lahko uporabijo kot ustrezni za presojo.
Dogovoriti se je treba o stopnji temeljitosti energetske presoje, pri čemer se upošteva, da bo to
vplivalo na:
a) čas na mestu presoje,
b) izbiro vzorcev,
c) raven modeliranja,
d) zahteve za meritve,
e) raven merjenja, vključno s podmerjenjem,
f) raven opredelitve priložnosti za izboljšanje energijske učinkovitosti,
g) zahtevane veščine presojevalca.
OPOMBA 2: Glej informativni dodatek C: Primeri obsega, cilja in temeljitosti energetskih presoj v stavbah.
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5.2 Uvodni sestanek
Energetski presojevalec se na uvodnem sestanku z organizacijo dogovori o:
a) času obiskov mesta presoje, npr., ali bodo potekali v običajnem delovnem času ali zunaj njega,
b) ravni sodelovanja stanovalcev,
c) območjih z omejenim dostopom,
d) potencialnih nevarnostih in tveganjih za zdravje.
Energetski presojevalec mora, kadar so na voljo, od organizacije pridobiti:
a) nastavitvene točke in operativne omejitve notranjih okoljskih razmer (kot so temperature, zračni
pretoki, osvetljenost, hrup) ter kakršna koli sezonska odstopanja;
b) vzorce zasedenosti za različen razpon dejavnosti v stavbi;
c) pripombe katerega koli stanovalca ali druge stranke v zvezi z operativnim delovanjem stavbe in
ravnjo storitve v stavbi;
d) energetske izkaznice, pripravljene za stavbo;
e) ali so bili izvedeni kakršni koli programi za dvig ozaveščenosti ali motivacije stanovalcev.
5.3 Zbiranje podatkov
5.3.1 Splošno
Zbiranje podatkov mora biti primerno obsegu energetske presoje.
5.3.2 Zahteve po informacijah
Energetski presojevalec mora v sodelovanju z organizacijo zbrati naslednje podatke, ki se zahtevajo v
okviru obsega energetske presoje:
a) trenutne in razpoložljive energetske nosilce;
b) podatke, povezane z energijo:
1) dobavljeno, proizvedeno in izvoženo energijo za vsak energetski nosilec (npr. identificirajo se
pretoki energije za enoto za soproizvodnjo toplote in elektrike ali za fotonapetostne sisteme,
kadar se proizvedena energija uporablja lokalno ali se izvaža),
2) podatke o porabi energije (ali odčitke skupaj s časom in datumom) vseh razpoložljivih
merilnikov ali števcev (npr. merilnik toplote, merilnik sanitarne tople vode, merilnik goriva,
števec ur gorilnika),
3) podatke posameznega merjenja, če so na voljo,
4) potrebo po energiji/obremenitveno krivuljo za kratek časovni interval (npr. za uro), če je na voljo,
5) pomembne povezane meritve;
Pogostost podatkov naj ustreza obsegu in temeljitosti energetske presoje. V energetskih presojah
stavb se po navadi uporabljajo podatki o mesečni porabi.
Podatke, povezane z energijo, naj beleži stavbni sistem nadzora, če je na voljo.
c) uskladitvene faktorje, ki vplivajo na porabo energije:
1) podnebne podatke (npr. temperatura, stopinje na dan, higrometrija, osvetljenost) na podlagi
lokalnega sistema za avtomatizacijo in nadzor stavb (BACS), če je na voljo,
2) vzorce zasedenosti;
Informacije za količinsko določitev uskladitvenih faktorjev, ki vplivajo na porabo energije, naj beležil
sistem za nadzor stavb, če je na voljo (npr. časi zasedenosti, stopinje na dan itd.).
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d) informacije o pomembnih spremembah v zadnjih treh letih ali v obdobju, ki ga zajemajo
razpoložljivi operativni podatki, v zvezi:
1) s fizično obliko stavbe,
2) s prostori, in sicer mere in/ali uporaba,
3) z ovojem stavbe (obnova oken, dodana izolacija itd.),
4) s tehničnimi sistemi v stavbi in območji, ki jih oskrbujejo,
5) z dogovori najemnikov,
6) z zasedenostjo prostorov (različni časi zasedenosti, podaljšane ure in notranje obremenitve),
7) z nastavitvenimi točkami in obnašanjem stanovalcev;
e) vrednosti, ki se uporabijo, prilagojene lokalnim/nacionalnim kazalnikom učinkovitosti (če je ustrezno):
1) tlorisna površina,
2) prostornina stavbe,
3) drugo;
f) obstoječe dokumente in informacije o zasnovi, delovanju in vzdrževanju, kot so:
1) stavbni načrti izvedenih del,
2) vsi zunanji dejavniki, ki lahko vplivajo na energetsko učinkovitost stavbe (npr. senca zaradi
bližnjih dreves ali stavb),
3) navedbe zagotovljenih storitev v stavbi (npr. katere sobe ali območja so ogrevana, hlajena,
prezračevana) na tlorisnem načrtu stavbe,
4) shema tehničnega sistema v stavbi z navedbo območij sistema, če obstajajo,
5) nadzorni diagrami in nastavitve,
6) podatki in mejne vrednosti aparatov in komponent;
g) informacijski model stavbe (BIM) in/ali modele zasnove stavbe, če so na voljo;
h) opremo v zasedenih prostorih, ki porablja energijo, in druge notranje obremenitve.
5.3.3 Pregled razpoložljivih podatkov
Energetski presojevalec mora pregledati informacije, ki jih je zbrala in predložila organizacija.
Če je po prejemu začetnih informacij izvedba energetske presoje primerna, energetski presojevalec
oceni obseg in meje energetske presoje.
Energetski presojevalec mora presoditi, ali informacije, ki jih je priskrbela organizacija, omogočajo
nadaljevanje procesa energetske presoje in doseganje dogovorjenih ciljev.
Kadar podatkov ni dovolj, lahko naročnik priskrbi manjkajoče podatke ali sprejme dejstvo, da bo moral
presojevalec sprejemati predpostavke (ki bodo podrobno opisane).
Energetski presojevalec mora na podlagi izkušenj in kompetenc izbrati sisteme in elemente, ki rabijo
energijo, ki jih bo preveril na mestu presoje, odvisno od cilja, obsega in temeljitosti energetske presoje.
5.3.4 Predhodna analiza podatkov
Energetski presojevalec mora analizirati zbrane podatke, da:
a) opravi predhodno analizo energijskega uravnoteženja presojanega predmeta na podlagi
podatkov o energiji,
b) določi ustrezne uskladitvene faktorje,
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c) določi ustrezne kazalnike energetske učinkovitosti,
d) ovrednoti razdelitev porabe energije (razčlenitev porabe), če je to mogoče, odvisno od
razpoložljivih izmerjenih podatkov,
e) če je dovolj informacij, določi začetno energijsko vrednost (energijsko izhodišče), ki se uporabi za
količinsko opredelitev vplivov ukrepov za prihranek energije,
f) načrtuje nadaljnje zbiranje podatkov in merjenje, ki se izvajata med terenskim delom.
Energetski presojevalec naj pripravi predhodni seznam priložnosti za izboljšanje energijske učinkovitosti.
5.4 Terensko delo
5.4.1 Namen terenskega dela
Energetski presojevalec mora pregledati presojani(-e) predmet(-e) znotraj obsega presoje. Energetski
presojevalec mora:
a) pregledati mesto presoje glede na prejete podatke;
b) v zvezi z vsako bistveno storitvijo v stavbi oceniti dejansko in prihodnjo raven storitve (npr.
temperatura, vlažnost, raven osvetljenosti itd.);
c) preveriti, ali tehnični sistemi zadoščajo za predvideni namen, tj. lahko zagotovijo zahtevano raven
storitve;
d) ovrednotiti delovanje tehničnih sistemov, pri čemer upošteva sistem proizvodnje, shranjevanja,
razdelitve in emisij ter izvršne elemente;
e) razumeti gonila za spremembe v tehničnih sistemih, kot so sezonske potrebe;
f) iskati priložnosti za izboljšanje energijske učinkovitosti ter povezane omejitve in ovire.
OPOMBA: Glej informativni dodatek D: Primeri kontrolnih seznamov za terensko delo v okviru energetske presoje v
stavbah.
5.4.2 Izvajanje
Ravnanje energetskega presojevalca med terenskim delom je opredeljeno v EN 16247-1, 5.4.2.
5.4.3 Obiski mesta presoje
Obiski mesta presoje so opredeljeni v EN 16247-1, 5.4.3.
Energetski presojevalec mora organizacijo prositi, da:
a) uredi dostop (samo za branje) do sistema za avtomatizacijo in nadzor stavb (BACS) ter
elektronskih podatkovnih virov;
b) zagotovi pooblaščeno pomoč za vse preskuse in dejanja, potrebne pri energetski presoji, npr.
vklapljanje ali izklapljanje sistemov in opreme;
c) uredi dostop do delo
...
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