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Jean Daniel NaparConvenor CEN/TC247/WG6Chief Technology OfficerSIEMENS Building Technology France dan.napar@siemens.com | Roland UllmannPresident CEN/TC247Innovation and Industry AffairsSIEMENS Building Technology Switzerlandroland.ullmann@siemens.com | Klaus WaechterGlobal Standardisation ManagerSIEMENS Building Technology Switzerland waechter.klaus@siemens.com |
On bases of
M/480, CEN/TC247 has three work areas:
1) Revision of the existing BAC standards, related
to the EPBD recast.
2) Developing two new standards:
·
Inspection
for BAC (with link with eu.bac system): EN 16946-1
·
Contribution
of TBM (Technical Building Management) for Energy Efficiency: N 16947-1
3) Work to be performed to support the relevant
CEN/TC’s (TC 89, TC 228, TC 156, TC 169) to contribute with
the BAC topics in the deliverables of these TC’s!
Also, as a
result of the EPBD recast, about 52 EN and EN/ISO standards were updated,
merged or developed to harmonize the energy calculation methods concerning
buildings. To increase the transparency and coherence of the calculation
methodology used today and tomorrow within the European countries and where
possible globally. BAC (via CEN/TC247) contributes with 7 standards and 7
Technical reports. The main standard is EN 15232. This standard which
contains a comprehensive and structured (for calculation methodology) list of
BAC functions that are intended to be used in the whole EPB standards set as
contribution of BAC in all modules of the new MODULAR STRUCTURE of EPB standards,
where applicable. BAC is identified as Module M10 and covers the modules M10-1,
M10-5, M10-6, M10-7, M10-8, M10-9 and M10-10 vertically, but consistently will
be present in ALL Modules Mx-5, Mx-6, Mx-7 and Mx-8.
Improved
energy efficiency in buildings is a high priority among European decision
makers, as well as building owners. Presently there is one CEN standard
assisting building owners to ensure that a newly constructed building or an
existing building being refurbished, will have the best available BACS
technology to save energy – i.e. the EN 15232 “Energy performance of
buildings – Impact of Building Automation, Controls and Building Management
standard”. Two standards (EN 15500 and EN 12098-x) complete the set
of functions of EN 15232 and give the CONTROL INPUT DATA for other modules.
For BAC standards, the set is completed by new subjects: Contribution of
Building Management System (or Technical Building Management TBM) to optimize
the energy use of technical building systems and the Inspection for Building
Automation and Control. BAC performance has a tendency to decline over time if
not actively checked, maintained and adapted to the actual use of the building
(independent of the building type). These subjects will be in another article
of BAC Consortia Team in charge for M/480.
However, there are no standards available that
address the difficult challenge of building owners to ensure that their
buildings keep good performing over time, or better, than when they were
first commissioned. |
Table 1. The
global overview of the whole work of CEN/TC247.
Reference
| Title
| Related
TR |
EN 12098-1 | Controls for heating systems - Part 1: Control
equipment for hot water heating systems - Modules M3-5,6,7,8 | CEN TR 12098-6 |
EN 12098-3 | Controls for heating systems - Part 3: Control
equipment for electrical heating systems - Modules M3-5,6,7,8 | CEN TR 12098-7 |
EN 12098-5 | Controls for heating systems - Part 5: Start-stop
schedulers for heating systems - Modules M3-5,6,7,8 | CEN TR 12098-8 |
EN 15500-1 | Control for heating, ventilating and
air-conditioning applications - Part 1: Electronic individual zone control
equipment - Modules M3-5, M4-5, M5-5 | CEN TR 15500-2 |
EN 15232-1 | Energy performance of buildings - Part 1: Impact of
Building Automation, Controls and Building Management - Modules
M10-4,5,6,7,8,9,10 | CEN TR 15232-2 |
EN 16946-1 | Inspection of Building Automation, Controls and
Technical Building Management - Module M10-11 | CEN TR 16946-2 |
EN 16947-1 | Building Management System – Module M10-12 | CEN TR 16947-2 |
The scope
of BAC and TBM covers in accordance with their role from one side all installed
and involved Technical Building Systems (where the effect of the BAC is used in
the calculation procedures) and from another side the global overall
optimization energy performance of a building.
There are
two ways of calculation of the contribution of BAC for energy performance of buildings:
·
One
is using the factor methodology described in the EN 15232-1; this
methodology is used for Inspection of Building Automation, Controls and
Technical Building Management EN 16946-1 (Module M10-11 in the Modular
Structure of EPB Standards set).
·
Second
is in the underling standards of the other Technical Building Systems (M3, 4,
5, 6, 7, 9) as DATA INPUT where the CONTROL IDENTIFIERS are used in the
calculation methodology of the entire EPB standards set.
To explain
the second way, several practical examples of visibility and usability are
given below:
·
HEATING
(M3-5), COOLING (M4-5) and VENTILATION (M5-5) as the EMMISION AND CONTROL
modules are influenced by EN 15500-1 – Control Accuracy; This is used also
in the European Voluntary Certification Scheme eubacCERT;
EN 15316-2 will take this reference into account and will required
certified products values for the EMMISION (HEATING and COOLING); the energy carrier
can be water and/or air.
·
The
DISTRIBUTION/GENERATION standards on HEATING & COOLING will take into
account the EN 12098 series.
·
The
VENTILATION standards introduce «DEMAND CONTROL VENTILATION»; see also the
article "The impact of control on the energy use of fans in building
ventilation systems" issued in REHVA JOURNAL October 2015. The author, dr.
JürgTödtli described and
developed this concept in the mathematical formulas to be used in this case.
·
EN 15232
as EN 16496 and EN 16497 will be the standardized references for the eu.bac- system and basis for the tool for INSPECTION.
Also, theses
references and BAC techniques will be used for the EU-VCS
(Voluntary Certification Scheme).
BAC
manufacturers are heavily influenced by the developed BAC (EPB) standards.
Their own R&D programs and production to implement the CEN/TC247 standards
across Europe and worldwide, is supporting the dissemination activities of the NSB's
(National Standard Body's) on national level. The successful rollout to the
market place of BAC standards by the industry are supports the transparency and
visibility of the whole building construction chain starting with
specifications for design, commissioning and use. Taking into account the full
buildings live cycle starting with new constructions and existing buildings,
using upgrading, evolution, and retrofit techniques for the BAC systems.
Industry
associations such as Syndicat ACR in France or eu.bac (European Building Automation and Control
Association) in Europe support this action. They provide lunch programs to
support the implementation for the usage of the standards to fulfill the requirements of the EPBD recast and national regulation.
This also means that there is a strong wish of the BAC Industry that the
activities such as REGULATION, STANDARDIZATION, CERTIFICATION and LABELING use
the same REFERENCES to describe BAC Systems. This means in practice that the
BAC standards could be used and referenced in national regulation and also used
as basis for EU Voluntary Certification Scheme and EU Labeling
Schemes.
There two
important initiatives of eu.bac on EU level: the eu.bac Certification and Labeling
Scheme (already in place from 2005 with more than 200 public domain
certificates based on EN 15500) and eu.bac
system based on EN 15232.
A small
description of the goals of eu.bac system and the
relation between EPB and BAC systems are shown below.
With the
activity of CEN/TC247/WG6 on basis of the EU-mandate M/480, the BAC visibility
and usability has definitely made a huge step ahead in Europe. It is clear that
the proposal to make BAC specifications VISIBLE and USABLE at EN and also ISO
level will allow a better support for the BAC industry worldwide!
[1] CENTC247 EN standards: see Table
1.
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