energy performance buildings standards: status and...

Energy Performance Buildings Standards: status and flexibility of the CEN and ISO standards on EPBD

CEN: European Standard Organisation; ISO: International Standard OrganisationEPBD: Energy Performance Buildings Directive

Jaap HogelingChair CEN TC 371 Program Committee on EPBD

Chair of JWG of ISO TC 163&205 advisory group on coordination of ISO and CEN Work on EPB

[email protected] of ASHRAE and REHVA

QUALICHeCK International Workshop on Summer Comfort Technologies in BuildingsAthens, 9-10 March 2016

mailto:[email protected]

http://www.cen.eu/cen/


CEN project on EPB standards development, current status

Basic principles EPB standards(EN/TS 16628)

Detailed Technical Rules (EN/TS 16629)

TR: Explanation and justification

(EN-ISO/TR 52000-2)

Overarching standard EPB (EN ISO 52000-1)

Whole set of EN (ISO) EPB standards

Fee

d b

ack

re

visi

on

Phase 1 (2011-2014)

Phase 2

(2013-2016)

QUALICHeCK WS 03-2016

workshop

Many of EPB standards are expected to be

published as EN & EN-ISO standards

Modular structure of the set of standards on

Energy Performance of Buildings (EPB)

Climatic data

Operating

conditions

Building and

building

elements

Assessment

boundaries

Overall EP

balance

Ways to

express EP

Heating

systems

Cooling

systems

Lighting and

lighting

systems

Ventilation

systems

Domestic Hot

Water

systems

Building

automation &

ControlIndoor Env.

Quality…..

Etc.

ISO 52000

ISO 52001

ISO 52003

ISO 52004

…

ISO 52009

ISO 52010

..

ISO 52015

ISO 52016

ISO 52017

ISO 52018

ISO 52019

ISO 52020

ISO 52021

ISO 52022

…

ISO 52145

ISO 52146

ISO 52147

ISO 52148

ISO 52149

ISO 52150

Consecutive

ISO numbers

reserved for

EPB set various

standards


http://www.iso.ch/

http://www.iso.ch/



http://www.iso.ch/

http://www.iso.ch/

HEAT GAINS

EN 16789-1 (Internal gains)

EN ISO 52022-1-2-3 (Solar gains)

LIGHTING

EN 15193-1

BUILDING PROPERTIES

INDOOR ENVIRONMENT REQUIREMENTS

CLIMATIC CONDITIONS

CONVERSION TO PRIMARY ENERGY EN ISO 52000-1 (EN 15603)

ENERGY PERFORMANCE EN ISO 52003

CALCULATION OF BUILDING ENERGY NEEDS FOR HEATING, COOLING AND (DE)HUMIDIFICATION EN 52016-1

CALCULATION OF BUILDING POWER DEMAND EN 12831-1 (HEATING) / EN 16798-11 (COOLING)

EN ISO 6946

EN ISO 13789

EN ISO 10077

EN 12831-3

EN 15316-3-1

EN 16798-1 (Indoor Environment)

EN 16798-3 (Ventilation Systems)

EN 12464-1 (Visual Comfort)

EN ISO 52010-1

National

standards

DHW

EN 15316-1

EN 15316-3-2

EN 15316-5

EN 15316-3-3

VENTILATION

EN 16798-3

EN 16798-7

EN 16798-5

EN 16798-5

HEATING

EN 15316-1

EN 15316-2

EN 15316-3

EN 15316-5

EN 15316-4 (1 to 8)

COOLING

EN 16798-9

EN 15316-2

EN 15316-3

EN 16798-15

EN 16798-13

BUILDING

AUTOMA-

TION

SYSTEM &

CONTROL

EN 15232-1

TR 15232-2

Emission

Distribution

Storage

Generation

Energy needs

General

EN 15193-1


Status/Planning EPB-project

• All 52 EPB standards are almost ready and will go out for the final Formal Vote by October 2016.

• The connected Technical Reports will be come available at the same time.

• Where relevant the connected Excel Files will be available to support the correct use and understanding of the calculation procedures included in the EPB standards

• After this Formal Voting we expect that by the end of 2016/ beginning of 2017 all EPB-standards will be published by the National Standard Bodies as EN or EN-ISO standards


Observation in Europe

• The modularly structured, transparent, unambiguous, but flexible* set of EN and ISO EPB standards the important instrument to support the proper implementation of the EPBD policy in the EU MS’s

*: for local climate, national legal framework, building tradition, building use, existing local energy-infrastructure, etc…

• The basis for the EU voluntary certification scheme for non-residential buildings (VCS)


Why we need this flexibility and transparency

Flexibility: to be suitable for:

– local climate,

– National/ regional legal framework,

– National/ regional building tradition and building use,

– existing local (national or regional) energy-infrastructure,

– Etc…

Transparency: to accommodate a levelled playing field when:

– Expressing the EP of buildings

– offering various energy (or CO2 emission) saving solutions


8

EN-ISO 52000-1

Flexibility in use of EPB Standardsthe OAS: EN ISO 52000-1 as Backbone

• CALCULATION STRUCTURE EN ISO 52000-1 + general parts

• CALCULATION MODULES FOR EACH STEP1 XLS per module

• EACH CALCULATION MODULE REQUIRES– INTERCONNECTION VALUES

(I/O TO THE STRUCTURE)

– PRODUCT DATA (LOCAL DATA)

– OTHER LOCAL DATA ABOUTSPECIFIC APPLICATION(LIKE LOCALISATION , INDOOR/OUTDOOR INSTALLATION INFO)

EN ISO XXX

EN-ISO XXX

EN-ISO XXX

IN

OUT

OUT

IN

IN

OUT

OUT

IN

IN

OUT

OUT

IN

IN

PRODUCT DATA

OTHER LOCAL DATA

IN

PRODUCT DATA

OTHER LOCAL DATA

IN

PRODUCT DATA

OTHER LOCAL DATA

INTERCONNECTION

LOCALDATA

MODULES

9

Replacing a module with a non- EN or EN-ISO-standard one

• Possible thanksto the modularstructure

• … but the I/O structure has to be respected

• Needed info can be foundboth in the accompanying XLS and in the specific I/O clauses in the EN or EN-ISO standard

EN ISO 45000-1

EN ISO XXX

Non-ENStd

ISO XXX

IN

OUT

OUT

IN

IN

OUT

OUT

IN

IN

OUT

OUT

IN

IN

PRODUCT DATA

OTHER LOCAL DATA

IN

PRODUCT DATA

OTHER LOCAL DATA

IN

PRODUCT DATA

OTHER LOCAL DATA

NATIONAL MODULE

Set of EPB standards: unambiguous but flexible (allowing national choices, boundary conditions and input data)

Each EPB standard contains:

• Annex A (normative): template for choices and input data needed for using the standard

• Annex B (informative): informative default choices and input data

• In general:

– Each individual user of the EPB standard is free to create his/her own data sheet according to the template of Annex A (~ replace the default choices and values of Annex B)


National implementation of EPB standardsEPB standards provide calculation/assessment

procedures but do not include product or system requirements!

It is expected, if the default values and choices in Annex B are not followed due to national regulations, policy or traditions, that:

– Either the NSB will consider the possibility to add or include a National Annex in agreement with the template of Annex A.

– Or the national or regional authorities will, in the building regulations, reference the standard and prepare data sheets containing the national or regional choices and values, in agreement with the template of Annex A.

• Further target groups are:– users of the voluntary common European Union certification scheme for

the energy performance of non-residential buildings

– other Pan EU or Global parties wanting to motivate their policy by classifying the building EP for a dedicated building stock.

– Global Innovators on the EP-marketQUALICHeCK WS 03-2016

Example of a default choice in Annex B of the EN ISO 52000-1


Table B.23 — Basis for the energy performance of buildings

Basis for the building energy performance Choice

Total energy performance (EP = EPtot) or non-renewable energy performance (EP = EPnren)

EP = EPnren

Cool Roof applications: Annex A/B solution applicable?

• In draft ISO 52016-1 the external radiative surface heat transfer coefficient and the solar absorptance of external constructions are both input variables.

• However, typically these are default values under Annex A/B regime.

• For special cases, like a ‘cool roof’ one should be able to replace these default values by declared values, including effect of ageing, dust, etc.


Cool Roof applications: Annex A/B solution applicable?

• However, as far as I know there is no international standard to determine such values?!

• In that case it is up to the (national) situation whether alternative values are accepted. E.g. in The Netherlands this would be typically a case for the “principle of equivalence”.

• See also ISO 13789 & ISO 6946


Choice of: Calculation intervalThe set of EPB standards allow both choices:

Hourly or MonthlyMonthly :

• Need to develop correction factors

Hourly :

• Intrinsically taken into account, if hourly

climatic data are available

The standards allow for both

options. If data are available,

hourly will be simpler

“Monthly method shall be equivalent to hourly method”

• Summer (dis)comfort

– Hourly method: can be derived from calculated hourly indoor temperatures.

– But also in hourly method: summer comfort indication is only valid if thermal zones are appropriately selected to indicate comfort problems!

– Discomfort indicator in monthly method?• E.g.: some countries use a ‘fictitious cooling system’ in case no

cooling system is available, but certain (comfort) temperature levels are expected according to the conditions of use (Level playing field)

• Same for heating! (rooms without heating equipment)


Most EPB standards include

calculation procedures • They will be accompanied by excel files

including all calculation formulas

• Demonstrating how the rules are to be

interpreted

• Offering easy access for software

developers and avoiding misinterpretation

by software builders


Excels to support the use of the EPB-

standards by software developers

• internal for CEN: to support, to demonstrate and

validate

– the consistency and unambiguity of equations in

the set of EPB-standards and

– their interconnecting procedures: all in- and outputs

of the EPB standards will clearly be defined


Excels available

• The excel files will be publicly available

• Some small differences may be possible between the final versions of the standards and the available files due to some editorial changes in these standards

• Public link to website

• https://isolutions.iso.org/ecom/public/nen/Livelink/open/35102456


https://isolutions.iso.org/ecom/public/nen/Livelink/open/35102456

FprEN16798-1:2016 Indoor environmental input parameters for the design and assessment of energy performance of

buildings

This IEQ Standard :

– deals with the indoor environmental parameters for thermal environment, indoor air quality, lighting and acoustics.

– specifies how to establish indoor environmental input parameters for building system design and energy performance calculations.

– includes design criteria for the local thermal discomfort factors, like draught, radiant temperature asymmetry, vertical air temperature differences, floor surface temperature.


FprEN16798-1 :2016 Indoor environmental input parameters for the design and assessment of energy

performance of buildings

This IEQ Standard :

• specifies occupancy schedules to be used in standard energy calculations

• Uses the Annex A/B approach

• Could be a basis for an IEQ declaration in combination with the EP certificate


Description of the categories used

Category Explanation

I High level of expectation

II Normal level of expectation

III Moderate level of expectation

IV Low level of expectation.


Background of these Categories


Temperature ranges for hourly calculation of cooling and heating energy in four categories of indoor

environment

Type of building orspace

Category

Temperature rangefor heating seasonsClothing ~ 1,0 clo

oC

Temperature range for cooling seasonsClothing ~ 0,5 clo

oC

Residential buildings, living spaces (bed room’s, kitchens,living rooms etc.)Sedentary activity: ~1,2 met

I 21,0 -25,0 23,5 - 25,5

II 20,0-25,0 23,0 - 26,0

III 18,0- 25,0 22,0 - 27,0

IV 17,0-25,0 21,0 – 28,0


Temperature ranges for hourly calculation of cooling and heating energy in four categories of

indoor environment


ADAPTATION IN NATURAL VENTILATED BUILDINGS

• Behavioural

– Clothing, activity, posture

• Psychological

– Expectations


Example of design ventilation air flow rates for a single-person office of 10 m2 in a low polluting building (un-adapted person)

Cate-

gory

Low-

polluting

building

l/(s*m2)

Airflow

per non-

adapted

person

l/(s*person)

Total design ventilation air flow

rate for the room

l/s l/(s*person) l/(s* m2)

I 1,0 10 20 20 2

II 0,7 7 14 14 1,4

III 0,4 4 8 8 0,8

IV 0,3 2,5 5,5 5,5 0,55


Collaboration with ISO

• 17 of the 52 EPB standards are EN-ISO standards

• This number will rise in future

• EN standards have the same status as EN-ISO standard in Europe

• For EN-ISO standards the same rules apply as for EN’s: Conflicting national standards have to be withdrawn by the National Standard Body.


Summary• The CEN EPB standards support the

implementation of the EPBD in the EU MS’s

• They include the EP assessment procedures for buildings and systems for existing towards low energy buildings to meet the nZEB and possible positive energy targets

• The developed standards offer the flexibility to apply them throughout Europe and Globally

• CEN and ISO cooperate to achieve a common set of EPB standards ( for ISO the numbers 52000—52150 have been reserved)


The sole responsibility for the content of this presentation lies with the authors. It does not necessarily reflect the opinion of the

European Union. Neither the EASME nor the European Commission are responsible for any use that may be made of the

information contained therein.

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