oSIST prEN 15315:2005
Heating systems in buildings - Energy performance of buildings - Overall energy use, primary energy and CO2 emissions
Heating systems in buildings - Energy performance of buildings - Overall energy use, primary energy and CO2 emissions
The purpose of this standard is to:
collate results from other standards that specify calculation of energy consumption within a building;
account for energy generated in the building, some of which may be exported for use elsewhere;
present a summary on tabular form of the overall energy use of the building;
specify calculation of primary energy consumption and carbon dioxide emission for the building as a whole;
establish general principles for the calculation of primary energy factors and carbon dioxide emission factors.
This standard will provide:
a definition of system boundaries (e.g. building, installations, energy supply) and calculation periods;
general definition of the overall energy use (i.e. determine which services are taken into account within the system boundaries);
definition of energy terms (energy use, primary energy, etc.);
definition of the data interfaces with other standards in order to report the overall energy use of buildings;
general procedures for taking into consideration decentralised energy production based on renewable energy and CHP (combined heat and power production), e.g. to show how on-site energy generation offsets energy demand;
identification of the energy streams across system boundaries;
principles for assessing primary energy consumption and CO2 emission of buildings (i.e. principles for determining primary energy factors and carbon dioxide emission factors);
general principles for taking into account the interactions between the different energy uses (e.g. calculation of recovered losses and gains).
The objective of specifying the details of the energy performance calculation for a building is to:
- underline the particularity of a project (e.g. efforts made on bioclimatic design);
- show the strong and the weak points in the overall energy performance of the building and to highlight potential gains:
- distinguish between thermal uses and specific electrical uses;
- indicate the outputs required f
Heizsysteme in Gebäuden - Energieeffizienz von Gebäuden - Gesamtenergieverbrauch, Primärenergie und CO2-Emissionen
Der Zweck dieser Norm besteht in Folgendem:
Zusammenstellen und Ordnen der Ergebnisse weiterer Normen, in denen die Berechnung des Energieverbrauchs in einem Gebäude festgelegt wird;
Bestimmung der in einem Gebäude erzeugten Energie, die teilweise für den Verbrauch an anderer Stelle nach außen abgegeben werden kann;
Liefern einer tabellarischen Zusammenfassung des Gesamtenergieverbrauchs des Gebäudes;
Festlegung der Berechnung des Primärenergieverbrauchs und der Kohlendioxid Emissionen für das gesamte Gebäude;
Festlegung allgemeiner Grundsätze für die Berechnung der Primärenergiefaktoren und der Faktoren für die Kohlendioxid Emission;
Die vorliegende Norm bietet Folgendes:
- eine Definition der Anlagengrenzen (z. B. Gebäude, Installationen, Energieversorgung) und der Berechnungszeiträume;
- eine allgemeine Definition des Gesamtenergieverbrauchs (d. h. die Bestimmung der Leistungen, die innerhalb der Anlagengrenzen berücksichtigt werden);
- eine Definition der energiebezogenen Begriffe (Energieverbrauch, Primärenergie usw.);
- eine Definition der Datenschnittstellen mit weiteren Normen, um Angaben zum Gesamtenergieverbrauch von Gebäuden machen zu können;
- allgemeine Verfahren zur Berücksichtigung einer auf erneuerbaren Energien und KWK (Kraft Wärme Kopplung) beruhenden dezentralen Energieerzeugung, z. B. um darzustellen, wie die Energieerzeugung vor Ort den Energiebedarf verändert;
- Identifizierung von über die Anlagengrenzen hinaus verlaufenden Energieströmen;
- Grundsätze für die Bewertung des Primärenergieverbrauchs und der CO2 Emissionen von Gebäuden, (d. h. Grundsätze für die Bestimmung von Primärenergiefaktoren und Faktoren für die Kohlendioxid Emissionen);
- allgemeine Grundsätze für die Berücksichtigung der Wechselwirkungen zwischen den verschiedenen Energieverwendungszwecken (z. B. Berechnung der rückgewonnenen Verluste und Gewinne).
Systemes de chauffage dans les bâtiments - Performance énergétique des bâtiments - Energie globale, énergie primaire et émissions de CO2
Ogrevalni sistemi v stavbah - Energijske lastnosti stavb - Splošna raba energije. osnovna energija in emisije CO2
General Information
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Standards Content (Sample)
SLOVENSKI oSIST prEN 15315:2005
PREDSTANDARD
september 2005
Heating systems in buildings - Energy performance of buildings - Overall energy
use, primary energy and CO2 emissions
ICS 91.140.10 Referenčna številka
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2005
ICS
English version
Heating systems in buildings - Energy performance of buildings -
Overall energy use, primary energy and CO2 emissions
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 228.
If this draft becomes a European Standard, CEN 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.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
: This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
Warning
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15315:2005: E
worldwide for CEN national Members.
Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .6
3 Definitions and symbols .7
4 Principle of the method.10
5 Calculation of the primary energy and CO emissions.18
Annex A (informative) Primary energy factors and CO emission factors .23
Annex B (informative) Overview of the different parameters influencing the integrated energy
performance of buildings.24
Foreword
This document (prEN 15315:2005) has been prepared by Technical Committee CEN/TC 228 “Heating
systems in buildings”, the secretariat of which is held by DS.
This document is currently submitted to the CEN Enquiry.
The subjects covered by CEN/TC 228 are the following:
- design of heating systems (water based, electrical etc.);
- installation of heating systems;
- commissioning of heating systems;
- instructions for operation, maintenance and use of heating systems;
- methods for calculation of the design heat loss and heat loads;
- methods for calculation of the energy performance of heating systems.
Heating systems also include the effect of attached systems such as hot water production systems.
All these standards are systems standards, i.e. they are based on requirements addressed to the system as a
whole and not dealing with requirements to the products within the system.
Where possible, reference is made to other European or International Standards, a.o. product standards.
However, use of products complying with relevant product standards is no guarantee of compliance with the
system requirements.
The requirements are mainly expressed as functional requirements, i.e. requirements dealing with the function
of the system and not specifying shape, material, dimensions or the like.
The guidelines describe ways to meet the requirements, but other ways to fulfil the functional requirements
might be used if fulfilment can be proved.
Heating systems differ among the member countries due to climate, traditions and national regulations. In
some cases requirements are given as classes so national or individual needs may be accommodated.
In cases where the standards contradict with national regulations, the latter should be followed.
Introduction
This standard specifies a general framework for the assessment of overall energy use of a building and
calculation of overall energy performance in terms of primary energy and CO emissions. Separate standards
specify calculation of the energy consumption of services within a building (i.e. heating, cooling, ventilation,
domestic hot water, lighting). In the present standard, these energy consumptions are considered for calcula-
tion of the overall energy use.
Allowance is made for energy that may be generated within, or on the surface of, the building, and which is
used to offset fuel and power drawn from other sources. Electrical energy generated in excess of the
instantaneous demand is considered, provided it is exported to the public supply for use elsewhere.
A comprehensive approach is needed for appropriate evaluation of all options to improve the energy
performance of buildings. The assessment is not limited to the building alone, but takes into account the wider
environmental impact of the energy supply chain. From an assessment of overall energy use, building owners
and policy-makers can gain an understanding of the relative merits of alternative options.
The user shall refer to other European Standards or to national documents for input data and detailed
calculation procedures not provided by this standard. Local values for factors needed to calculate the primary
energy consumption and CO emissions should be defined in a national annex.
1 Scope
The purpose of this standard is to:
collate results from other standards that specify calculation of energy consumption within a building;
account for energy generated in the building, some of which may be exported for use elsewhere;
present a summary on tabular form of the overall energy use of the building;
specify calculation of primary energy consumption and carbon dioxide emission for the building as a
whole;
establish general principles for the calculation of primary energy factors and carbon dioxide emission
factors.
This standard will provide:
a definition of system boundaries (e.g. building, installations, energy supply) and calculation periods;
general definition of the overall energy use (i.e. determine which services are taken into account within
the system boundaries);
definition of energy terms (energy use, primary energy, etc.);
definition of the data interfaces with other standards in order to report the overall energy use of buildings;
general procedures for taking into consideration decentralised energy production based on renewable
energy and CHP (combined heat and power production), e.g. to show how on-site energy generation
offsets energy demand;
identification of the energy streams across system boundaries;
principles for assessing primary energy consumption and CO emission of buildings (i.e. principles for
determining primary energy factors and carbon dioxide emission factors);
general principles for taking into account the interactions between the different energy uses (e.g.
calculation of recovered losses and gains).
The objective of specifying the details of the energy performance calculation for a building is to:
underline the particularity of a project (e.g. efforts made on bioclimatic design);
show the strong and the weak points in the overall energy performance of the building and to highlight
potential gains:
distinguish between thermal uses and specific electrical uses;
indicate the outputs required from related standards, in which calculation of energy consumption of
services within a building are specified.
This work will be coordinated with CEN/TC TC 89, TC 156, TC 169, and TC 247.
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, Thermal insulation - Physical quantities and definitions
prEN wi 7, Heating systems in buildings - Method for calculation of system energy requirements and system
efficiencies – Part 1: General
prEN wi 8, Heating systems in buildings - Method for calculation of system energy requirements and system
efficiencies – Part 2.1: Space heating emission systems
prEN wi 9 part 2.2.1, Heating systems in buildings - Method for calculation of system energy requirements and
system efficiencies – Part 2.2.1: Space heating generation systems, Combustion systems
prEN wi 9 part 2.2.2, Heating systems in buildings - Method for calculation of system energy requirements and
system efficiencies – Part 2.2.2: Space heating generation systems, Heat pump systems
prEN wi 9 part 2.2.3, Heating systems in buildings - Method for calculation of system energy requirements and
system efficiencies – Part 2.2.3: Space heating generation systems, Thermal solar systems
prEN wi 9 part 2.2.4, Heating systems in buildings - Method for calculation of system energy requirements and
system efficiencies – Part 2.2.4: Space heating generation systems, The performance and quality of CHP
electricity and heat (incl. on-site and micro-CHP)
prEN wi 9 part 2.2.5, Heating systems in buildings - Method for calculation of system energy requirements and
system efficiencies – Part 2.2.5: Space heating generation systems, The performance and quality of district
heating and large volume systems
prEN wi 9 part 2.2.6, Heating systems in buildings - Method for calculation of system energy requirements and
system efficiencies – Part 2.2.6: Space heating generation systems, The performance of other renewables
heat and electricity
prEN wi 9 part 2.2.7, Heating systems in buildings - Method for calculation of system energy requirements and
system efficiencies – Part 2.2.7: Space heating generation systems, Biomass combustion systems
prEN wi 10, Heating systems in buildings - Method for calculation of system energy requirements and system
efficiencies – Part 2.3: Space heating distribution systems
prEN wi 11 part 3.1, Heating systems in buildings - Method for calculation of system energy requirements and
system efficiencies – Part 3.1: Domestic hot water systems, characterisation of needs (tapping requirements)
prEN wi 13, Energy performance of buildings – Energy requirements for lighting
prEN wi 14, Energy performance of buildings – Calculation of energy use for space heating and cooling –
Simplified method
prEN wi 17, Thermal performance of buildings – Calculation of energy use for space heating and cooling –
General criteria and validation procedures
prEN wi 20, Ventilation for buildings – Calculation methods for energy requirements due to ventilation systems
in buildings
3 Definitions and symbols
3.1 Definitions
For the purposes of this document, the definitions given in EN ISO 7345 and the following terms and
definitions apply:
3.1.1
building net energy (useful energy)
energy supplied by ideal energy systems (no system losses are taken into account) to provide the required
services for heating, cooling, ventilation, domestic hot water and lighting. Recovered losses and gains are
taken into account
3.1.2
building system
technical equipments for heating, cooling, ventilation, domestic hot water and lighting
3.1.3
CO emission factor
quantity of CO emitted to the atmosphere per unit of energy source (kg CO / kWh energy source)
2 2
3.1.4
CO annual emission factor (system-average for an entire year)
emission factor calculated by estimating the total CO emissions during a year and dividing that figure by the
total energy delivered over the year
3.1.5
CO marginal emission factor (average for an entire year)
emission factor applied to multi-plant generation systems and depending on the plant merit order (priority
order in which the plants are put into operation as demand changes), the size of the system and the demand
pattern
3.1.6
calculation period
time period (time step) considered for calculation of the energy losses and gains (e.g. month, day, boosted
subperiod), ref. prEN wi 7
3.1.7
co-generation (building bound)
combined generation of power (electricity) and heat, where heat delivery is restricted to the buildings. The
total amount of heat to be delivered by the building bound co-generation unit can be determined unequivocal.
Other cases of co-generation will be considered as district heating
3.1.8
cooling
process of heat extraction for thermal comfort
3.1.9
delivered energy
energy supplied to the building through the system boundary to satisfy the energy requirements for heating,
cooling, ventilation, domestic hot water and lighting
3.1.10
energy carrier
substance or phenomenon that can be used either to produce mechanical work or heat or to operate chemical
or physical processes
3.1.11
energy demand
energy to be delivered by an ideal energy system (no system losses are taken into account) to provid
...
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