Building Energy Assessment Modelling (BREEAM, LEED etc); Importance for District Heating

Transcription

1 Building Energy Assessment Modelling (BREEAM, LEED etc); Importance for District Heating Robin Wiltshire BRE Building Futures Group 28 April 2015 Part of the BRE Trust

2 Buildings Environmental Performance Systems What they are? Why to use them? BREEAM and LEED: the two most commonly used systems Focus on BREEAM.

3 Buildings Environmental Performance Systems Environmentally rating of buildings growing rapidly Increasingly planners insisting on high efficiency buildings Rating buildings enables hidden elements to be credited as well as highly visible technologies like PV Issue of crediting community systems as well as individual buildings.

4 Which to use? The right decision can improve design and quality of a building and therefore the life of its occupants BREEAM and LEED are the two most commonly used systems BREEAM International and LEED US claim global applicability Both defer to local regulations, guidance and standards.

5 BREEAM or LEED? Analysis has shown considerable overlap one analysis shows about 50% commonality If a building scores well with BREEAM it probably scores well with LEED BREEAM targets often technology specific; LEED targets leave it more to designer discretion Focus on BREEAM as example follows.

6 BREEAM The world s longest established and most widely used environmental assessment method for the built environment Created in 1988 and launched in 1990 Over 485,000 projects certified, almost 2 million registered for assessment since it was first launched Network of over 4,000 independent licensed assessors across the world

7 Certification scheme Voluntary Independent & credible Customer focused Holistic

8 Number of buildings Regulatory minimum Pass Good Very Good Excellent Outstand -ing Going beyond regulations Minimal Environmental Standards Aspirational

9 Whole Life Assessment

10 Management Pollution Land use and Ecology Materials Transport Health and wellbeing Waste Water Energy

11 Scoring Minimum Standards Energy Management Health & Well-being Water Waste Land Use & Ecology Tradable Credits Energy Water Materials Transport Waste Pollution Health & Well-being Management Land Use & Ecology Category Scores Environmental Weighting Final Score Pass 30 Good 45 Very Good 55 Excellent 70 Outstanding 85 Innovation Credits Exemplary Performance Requirements Approved Innovation Credits

12 How to get the credits for energy BREEAM currently uses a performance approach instead of the previous simple checklist approach This involves gathering all energy-related credits in terms of how the building performs compared with national minimum compliance requirements For this the building is modelled using a local in-country system (SBEM in UK) and compared to designated local minimum requirements.

13 Modelling energy performance for BREEAM credits First, energy performance data gathered: demand, primary energy consumption and carbon dioxide emissions for both actual and notional building from calculation tool (SBEM in UK) Data is fed into translator curves using in-country system that will convert performance metrics (demand, primary energy and carbon dioxide emissions) into energy credits Web-portal available for assessor to submit data in order to obtain energy credits for entry into BREEAM assessment.

14 BREEAM scoring system Issue Pass Good Very Good Excellent Outstanding Man 01 Sustainable Procurement 1 Credit 1 Credit 1 Credit 1 Credit 2 Credits Man 02 - Responsible Construction Practices None None None 1 Credit 2 Credits Hea 01 Visual Comfort Criterion 1 only Criterion 1 only Criterion 1 only Criterion 1 only Criterion 1 only Hea 04 Water Quality Criterion 1 only Criterion 1 only Criterion 1 only Criterion 1 only Criterion 1 only Ene 01 Reduction of CO 2 Emissions Ene 02- Energy monitoring None None None None None 6 Credits 10 Credits 1 Credit (1 st submetering credit) 1 Credit (1 st submetering credit) 1 Credit (1 st sub-metering credit)

15 Energy Ene 01 Energy Efficiency 15 credits Ene 02a & b Energy Monitoring 2 credits Ene 03 External Lighting 1 credit Ene 04 Low/zero Carbon Technologies 2 credits Ene 05 Energy Efficient Cold Storage 3 credits Ene 06 Energy Efficient Transportation 2 credits Ene 07 Energy efficient laboratory systems 5 credits Ene 08 Energy Efficient Equipment 2 credits Ene 09 Drying Space 1 credit

16 BREEAM Communities is A standard to improve the design of large-scale developments An holistic assessment of environmental, social and economic sustainability A framework for collaborating on key masterplanning issues Image: White Architects and PEAB

17 Complementary to building assessments Images: Kanozi Arkitekter

18 Integrated with the masterplanning process Step 3 The Details Step 2 The Layout Step 1 The Principle Images: Farrells

19 Thank you for listening!