Transcript Energy Performance of Buildings (EPBD) Directive

Energy Performance of Buildings (EPBD) Directive
Public Buildings
EAUC CaSPr Energy TSN
25th January, Edinburgh
Glyn Mountford
Senior Engineering Consultant
Energy Management Solutions Ltd
EPBD Requirement
•
Scotland, as part of the United Kingdom along with all other EU
Member States has an obligation under the Energy Performance
of Buildings Directive (EPBD) to promote improvement in the
energy performance of new and existing buildings.
•
Requirement for energy performance assessment with certificate
What is an Energy Performance Certificate?
•
•
•
•
An Energy Performance Certificate (EPC)
is a document which states the energy
efficiency of a building based on the
standardised way that the building is used.
Carbon dioxide (CO2) ratings are shown in
bandings from A to G, with A being the least
polluting.
The performance of the property is
benchmarked against current building
standards and cost effective improvements
if applied to the building.
For Public Buildings, the certificate (DEC)
must be fixed to the building in a prominent
display location e.g. Reception Area and
will be valid for a period of 10 years.
Do all public buildings need to display an EPC?
No, this applies only to buildings which meet all of the following criteria:
•
•
•
•
•
Need to comply with Non Domestic Technical Handbook, standard 6.1 and
6.9 specifically, MANDATORY
the conditioned (heated/cooled) area of the building is over 1000m2
the building is occupied by public authorities or provides public services to a
large number of persons;
the building is frequently visited, at least weekly, by members of the general
public;
the public have a right of access to the building, or parts of the buildings
providing services directly to the public; and public funding, including part
funding, is used to operate, general upkeep, or funding staff costs. Examples
include colleges, community centres, libraries, hospitals, benefit offices and
crematoria.
What other types of building require an EPC?
•
Any building in excess of 50m² which will be rented or sold
•
Any new construction, major alteration or extension greater than 50m²
Other Requirements
Updates 2007 Technical Handbook
• Metering
• A/C system inspection (>12kW)
I need an EPC – What do I do next?
You must ensure that the EPC is :
•
produced using EPBD compliant methodologies/software
from an accredited individual
•
affixed to the building in a prominent place
•
in place by 4 January 2009
Who can Provide me with an EPC?
•
The Scottish Building Standards Agency (SBSA) is entering into protocols
with a number of organisations and professional bodies whose members
have the qualifications and experience to produce EPCs.
•
•
•
•
•
•
Chartered Institute of Building Services Engineers (CIBSE)* protocol agreement
Association of Building Engineers (ABE) protocol agreement
Energy Institute (EI) protocol agreement
Royal Institute of Chartered Surveyors (RICS) protocol agreement
Building Research Establishment (BRE)* (establishing protocol with SBSA)
Heating & Ventilation Contractor’s Association (HVCA) (establishing protocol with SBSA)
*Note both BRE and CIBSE now have approved Energy Assessor Schemes
which are also approved by Communities and Local Government (CLG) in
England and Wales
EPC Calculation Guidelines
How can I calculate an indication of carbon dioxide emissions?
•
•
Simplified Building Energy Model (SBEM)
Other tools, including detailed simulation Modelling (DSM) (complex
design)
How should the building be measured?
•
Entire area of the building occupied by the public authority, not just
the area open to the public.
EPC Display Guidelines
Who has responsibility for affixing an EPC?
•
The building owner
Where should the EPC be placed?
•
Area visible to public, e.g. lobby or reception area.
The EPC must include
•
•
•
•
current carbon dioxide emissions,
potential emissions on an annual basis
potential energy use of the building
list of cost effective improvements (improvement plans which show future
upgrades may also be displayed next to the EPC).
Will the information on the EPC
be recorded anywhere?
•
This information must be recorded on the Building Standards
Register held by the local authority where the building is located.
When should an EPC be updated?
• An individual EPC will only be valid for a period of ten years
National Calculation Methodology
National Calculation Tool
• SBEM / iSBEM
• Other Dynamic Simulation Modelling (DSM) Software – IES VE, TAS, Hevacomp
NCM requires following approach:
National Building – size, shape, activity, orientation, 2002 standards
• Target Emission Rating – 2006 IF, LZC Benchmark
• Predicted Building Energy Rating
Assessors Requirements
• Member of Protocol Organisation and Trained in SBEM or approved NCM software
• Qualified as an accredited energy assessor through competent person scheme
• CIBSE and BRE have recognised competent assessor schemes
• Demonstrated competency in software
EPC - Data Collection
• Difficult and time consuming
• Methodology required dependent on approved software
• The following data requires collation:
–
–
–
–
–
General Building Data Address Type , Owner Detail, Certifier Detail etc
Project Detail – Construction Details, walls roof etc
Geometry – Building Type, Activity, Air Permeability, Orientation
Geometry Selector – Zone, Envelope, Doors, Windows, Building Height & m²
Building Services – HVAC, DHW Gen, Solar, PV, Wind, Lighting, Lighting
Controls
SBEM Building Rating
Building Energy Performance
Data Collection Formats
Documents and Information needed for the
Simplified Building Energy Model calculations:
•
•
•
•
•
Site Plan (with scale and building orientation)
Energy Bills (with details of kWh and power factor
Building Area (m2)
Date of construction
Date and details of any upgrades
Data Collection Cont.
Room
Ref
Zone Ref if
Applicable
Description
Building type
(Office,
corridor
etc...)
Activity
Area
(m2)
Heigh
t (m)
Which HVAC
system*?
DHW
generator ?
lamp type
Lighting
controls
Project Details
Construction for:
External Walls
Internal Walls
Roof
Ceiling
Floors
Doors
Glazing
General description (materials...)
% Glazed
U-Value
W/m2
Data Collection Cont.
Building services
Heating
HVAC
Domestic Hot Water
Details of equipment
Efficiency
(%)
Installed
before 1998
(Yes/No)
Data Collection Cont.
Type (details of equipment)
Area
(
m
2
)
Orientation (N,
NE, W,
etc...)
Solar Energy
Type (details of equipment: Turbine Diameter, Hub Height,
Power kW)
Wind Generators
Terrain type
Inclination
(Degrees)
Data Collection Cont.
Details of Building Leakage, Duct Leakage and Fan efficiency tests
Building Leakage
Duct Leakage
Fan Efficiency
What needs to be done??
•
•
•
•
•
•
•
•
Identify which buildings require EPC’s and DEC’s
Consider what data required and in what form the data is e.g. drawings,
manuals, possible inspection required, etc
Who will collate the data, internal or external?
Will a site audit or similar be required to collate the data?
Methodology for data correlation
Who will carry out building assessments – must be accredited energy
assessor, in-house personnel who are accredited can perform
Above may depend on level of complexity of building/s and number of
buildings
What tool is suitable – CLG (England and Wales) have defined 3 levels
of building complexity, production of certificates
Energy Management Solutions
Contact Details
Glyn Mountford
Senior Engineering Consultant
17 Corstorphine Road
Edinburgh
EH12 6DD
Phone: 0131 346 3214
Fax: 0131 777 2747
[email protected]