NEW CITY OF VANCOUVER REZONING REQUIREMENTS

Transcription

1 NEW CITY OF VANCOUVER REZONING REQUIREMENTS MARCH 16 TH, 2017 SUBTITLE Martina Soderlund, P.Eng, BEMP, LEED AP BD+C E:

2 WHO AM I Building Performance Specialist

3 OUTLINE 1. Background 2. New Rezoning Requirements 3. Compliance and Process 4. Discussion

4 A Performance Perspective

5 BUILDINGS 55% of Vancouver s GHG emissions

6 WHY ARE BUILDINGS IMPORTANT IN THE CARBON DISCUSSION? Buildings are the #1 contributor to GHG s Solid Waste 8% 13% Light-Industrial Buildings Vehicles 37% Buildings 55% 12% 11% Multi-Unit Residential Buildings Commercial Buildings 19% 1 & 2 Family Homes Vehicles 55% of Vancouver s GHG emissions Solid Waste Source: City of Vancouver

7 2020 GREENEST CITY ACTION PLAN GREEN BUILDING Category TARGET: Require all buildings constructed from 2020 onward to be carbon neutral in operations TARGET: Reduce energy use and GHG emissions in existing buildings by 20% over 2007 levels Buildings Source: City of Vancouver

8 RENEWABLE CITY STRATEGY Our Future to 2050 TARGET: Derive 100% of the energy used in Vancouver from renewable sources before 2050 TARGET: Reduce greenhouse gas emissions by at least 80% below 2007 levels before 2050 Buildings City Goal: Real and Reliable Carbon Reductions Source: City of Vancouver

9 RENEWABLE CITY STRATEGY Our Future to 2050 Buildings Source: City of Vancouver

10 NEW- ZERO EMISSIONS BUILDING PLAN (ZEBP) Carbon Zero Operations by 2030 NEW: Zero Emissions Building Plan (July 2016) Target: Zero operational greenhouse gas emissions for NEW BUILDINGS by 2030 Includes step down emission targets over time In that plan updated REZONING POLICY 2017 Source: City of Vancouver

11 NEW- ZERO EMISSIONS BUILDING PLAN (ZEBP) Two Overall Pathways for Real and Reliable GHG Reductions High Performance Buildings Envelope + Ventilation Aggressive EUI, TEDI and GHG limits Will support long term efficiency Low Carbon Energy Source Low-carbon supply guaranteed NEU Mandatory Areas (TBD) More basic EUI, TEDI, GHG limits Source: City of Vancouver

12 NEW REZONING POLICY - TIMELINE Green Buildings Adopted by council November 2016 Come into effect May 1st, 2017 Between now and then, project have the option of using current requirement, OR the new Source: City of Vancouver

13 Buildings WHAT IS HAPPENING IN THE PROVINCE? Energy Step Code in Development Stepcode -Voluntarily beyond current building code: ASHRAE or NECB 11 To prepare for future versions of BC Building Code United efforts implement energy targets aligned with City of Vancouver Requires Energy Modeling In Force: End of 2017.

14 What are the New Rezoning Requirements for Green Buildings?

15 CURRENT REZONING POLICY - TARGETS Green Buildings LEED Gold minimum 63 points 22% Better than ASHRAE Water Efficiency Point 1 Stormwater Point Connection to Neighborhood Energy System (NEU) No differentiation between building types (Part 3) Source: City of Vancouver

16 NEW REZONING POLICY High Performance Buildings New RZ Policy Residential (MURBS) Commercial Passive House Certified OR The 10 point System Passive House Certified OR LEEDv4 AND AND 0 Performance Targets Performance Targets

17 PASSIVE HOUSE PRINCIPLES Five basic principles Super insulated Thermal bridge free Airtight shell Superior glazing (triple pane) Ventilation preheat/ heat recovery

18 WHAT IS A PASSIVE HOUSE? The classic concept The passive concept Before Heating Energy Demand = 290 kwh/m 2 After Heating Energy Demand < 20 kwh/m 2

19 PASSIVE HOUSE TARGETS Performance Requirements Airtight Shell: Pa Annual heating: 15 kwh/m2/year Annual cooling: 15 kwh/m2/year Primary Energy: 120 kwh/m2/yr

20 Apartment Bldg Liebefeld, Switzerland 2006 Primary Energy 90 kwh/m2 Glazing: 0.5 W/m2K Exterior wall: 0.1 W/m2K Roof: 0.1 W/m2K Timber+reinforced concrete 100% renewable energy Passive+Active solar use Subsoil heat exchanger Pellet heating system 22

21 Apartment Bldg Hamburg, Germany 2009 Floor area 2,538 m2 Primary energy 83 kwh/m2 Glazing: 0.52 W/m2K Exterior wall: 0.13 W/m2K Roof: 0.09 W/m2K 300 mm EIFS Cross flow heat recovery District Heating 23

22 Primary School UK Wolverhampton, 2011 Bushbury Hill Primary School Winter Primary Energy = 168 kwh/m2 Expected Summer Primary Energy < 80 kwh/m2 24

23 Kindergarden Denmark 2009 Floor area 782 m2 Primary energy 102 kwh/m2 Glazing: 0.74 W/m2K Exterior wall: 0.07 W/m2K Roof: 0.06 W/m2K Prefab concrete, wood, plaster Rotary heat exchanger Geothermal heating Solar thermal+pv District heating 25

24 Office Bldng Ludwigshafen, Germany 2007 Area: 10,000m2 Net Zero Energy Building Geothermal heating Annual Savings: 200,000L oil Cost savings: EUR 117,000 26

25 Office Tower RHW.2 Vienna, Austria 2014 Area: 25,000m2 First Passive House Certified Tower Double skin glazing Ground Source Heat Pumps 27

26 Aeropolis offices architectes associés kindergarden O2 architects social housing B architecten Belgium - Passive House Examples A2M architects 28

27 NEW REZONING POLICY High Performance Buildings New RZ Policy Residential (MURBS) Commercial Passive House Certified OR The 10 point System Passive House Certified OR LEEDv4 AND AND 0 Performance Targets Performance Targets 29

28 NEW REZONING POLICY RESIDENTIAL (MURBS) The 10 point system 3 High Level Outcomes with 10 Requirements (No LEED!) Zero Emissions Buildings 1) ZEBP 2016 Limits 2) Report Refrigerant + Embodied Carbon 3) Enhanced Commissioning 4) Whole Building Airtightness Testing 5) Energy System Sub-Metering and Reporting Healthy Buildings 6) Direct Ventilation 7) Low-Emitting Materials 8) Indoor Air Quality Testing Resilient Buildings 9) Green Stormwater Infrastructure 10) Resilient Water Access OR Passive House

29 NEW REZONING POLICY ZEBP 2016 TARGETS For Both Residential and Commercial Buildings OR Passive House

30 WHAT DOES TEUI MEAN? Design Implications.. TEUI (kwh/m 2 /yr) total energy utilization intensity Total building energy including process Based on building area (excluding parkades) Lighting, plugs, heating/cooling, fans, pumps, DHW, kitchen gas, appliances, exterior lighting+heating Energy modeling to show compliance

31 kwh/m2 How much more efficient is the new TEUI? BAU 200 Current Energy Code Current Energy Code % -40% 50 0 MURB Current ASHRAE New RZ Targets ASHRAE Average 0 High Rise MURB MURB Office 0 (Vancouver) New RZ Targets Office Passive House Target (fuel source depending) 33

32 Efficient Hospitals Around the World compared to the PNW Energy Utilization Intensity (EUI) kwh/m Average Existing (CBECS) PNW Hospital (4 buildings) Average Existing Rigshospitalet Akershus St Olaufs Pacific North West Norway % below ASHRAE Average Existing New Karolinska Sweden Nanaimo Regional General Hospital ED Local Best Practice Source: PNW, Sweden, Norway - data from University of Washington, IDL. NRGH data from VIHA 34

33 NEW REZONING POLICY ZEBP 2016 TARGETS For Both Residential and Commercial Buildings OR Passive House

34 WHAT DOES TEDI MEAN? Design implications TEDI (kwh/m 2 /yr) thermal energy demand intensity Include envelope heat loss Include thermal bridge effect Include ventilation heating including heat recovery Ignore all other HVAC efficiencies and DHW ENVELOPE IMPLICATIONS no more cheating. Source: iphi

35 WHAT DOES GHGI MEAN? Design implications GHGI (kg/m 2 /yr) greenhouse gas intensity Limit use of natural gas Push industry into using electricity.? Pay attention to operational cost. Electricity: $0.09/kWh Natural Gas: $0.03/kWh

36 0 0 Source: City of Vancouver 38

37 NEW PERFORMANCE TARGETS Design implications - possible.. Potential large reductions in glazing percentage Triple pane glazing might be required to offset Details and thermal bridging expertise needed Beyond current Energy Code Electric source for heating.. Increase in operational cost?? Electricity: $0.09/kWh Natural Gas: $0.03/kWh

38 PERFORMANCE TARGETS Design implications at no additional cost? Source: iphi

39 Compliance Requirements 41

40 HOW DO WE SHOW COMPLIANCE? Documentation Requirements 1) Rezoning Application EUI, TEDI and GHG - NEW 2) Building Permit Application Energy Code ASHRAE or NECB 11 3) City Screening, possibly 3 rd party reviews TBD 4) Specific Energy Modeling Guidelines to Use - NEW 5) Signed Letter from the Energy Modeler - NEW P.Eng or BEMP (ASHRAE) EUI, TEDI and GHGI 6) Energy Checklist from Energy Modeler - NEW

41 Energy Model REQUIRED EUI GHG TEDI RZ

42 IMPACT ON PROJECT PROCESS AND PLANNING A few key items.. Allow for longer design time (double for passive house (?)) Do early airtightness testing Training of Trades essential Engage a building energy modeling professional BEFORE rezoning Allow for fee s in project budget Look for experience to save effort Ask for energy modeler credentials no longer under Mech discipline or Arch. P.Eng and/or Building Energy Modeling Professional (BEMP) CaGBC experienced modelers list, good place to start

43 QUESTIONS? 45

44 WHERE IS THE ENERGY USED? Multi Unit Residential Building Lower Mainland Domestic hot water 25% Suite electric baseboard heating 11% Suite lighting and plugloads 17% Ventilation heating/fireplaces 26% Common area electricity 21% Energy Utilization Intensity = 213 kwh/m 2 Source: RDH Engineering 46