ZCB First Zero Carbon Building in Hong Kong. Dr Guiyi Li Director Zero Carbon Building Construction Industry Council

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1 ZCB First Zero Carbon Building in Hong Kong Dr Guiyi Li Director Zero Carbon Building Construction Industry Council

2 Construction Industry Council Set up under the Construction Industry Council Ordinance (Cap.587) Functions of the CIC are stipulated in Sections 5&6 of the Construction Industry Council Ordinance (Cap.587) Enhance Cohesiveness Enhance Cohesiveness Advance Skills Through Training Reflect Needs and Aspirations Functions of CIC Elevate the Quality and Competitiveness Promote Good Practices 2

3 Background Hong Kong Government has recently targeted for Carbon Reductions (50% to 60% Carbon Intensity Reduction by 2020 compared to 2005 baseline) Buildings consume 90% electricity and are responsible for 60% Greenhouse gases (GHG) emissions in HK Construction industry has a significant role to play in GHG emission reduction ZCB - first Zero Carbon Building in HK, was developed by Construction Industry Council in collaboration with the HK Government. It was the first completed project under the Energizing Kowloon East Initiative of the HK Government.

4 Missions and Visions Serving as 1) an Exhibition Centre - to showcase the state-of-the-art ecobuilding design and technologies to the construction industry internationally and locally 2) an Education Centre - to raise community awareness of sustainable living in Hong Kong and to promote the human behavioural changes 3) an Information Centre to disseminate the latest green building technologies and practices as well as the performance evaluation results of ZCB to industry stakeholders

5 8 SheungYuetRoad Kowloon Bay

6 Kowloon East

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8 Basement / Ground Floor Plan

9 Ground Floor Plan

10 Ground Floor Plan

11 Ground Floor Plan

12 Ground Floor Plan

13 Mezzanine Floor Plan

14 Mezzanine Floor Plan

15 ZCB Virtual Tour a/zcb/lobby

16 Something Worth Noting 1 st zero-carbon building in HK 1 st building with grid feed-in in HK 1 st native urban woodland in HK One of the 1 st BEAM Plus Platinum new building projects 1 st large scale use of biodiesel made from waste cooking oil for electricity generation One of the few ZCBs in the world that account for carbon emissions during the operation stage as well as the embodied carbon of the construction process and the major structural materials

17 Energy Strategy Energy Hierarchy Renewable Active Systems

18 Reduction of Energy Demand Passive Design Active Systems 20% 25%

19 Renewable Energy Generation Bio-fuel Trigeneration System PV Panels - multi-crystalline - BIPV - CIGS

20 CCHP Power + Cooling + Dehumidification

21 Energy Plus Carbon Strategy Emissions embodied in materials 1,400 tonnes Emissions during construction 150 tonnes Emissions during operation 4,600 tonnes (92 t /y) Total 6150 tonnes On-site renewable energy offset 7,100 tonnes (142 t/y) 50 years Net energy output over operating energy consumption to offset embodied carbon of major structural materials & construction 7,100 tonnes

22 Low Embodied Carbon Materials Regionally manufactured materials Sustainable timber Reinforced concrete with steel rebar with recycled content and high percentage of Pulverized Fly Ash Consume less energy or emit less carbon in their process of extraction, manufacturing and transportation

23 Low Embodied Carbon Construction Balanced cut and fill for the site formation works Gabion wall construction making use of construction debris salvaged from demolition

24 Performance Construction Stage CO 2 Reduction Reference CO 2 Emission Target CO 2 Emission of This ZCB Reduction Construction Process Material Use 2200 t 150 t 1400 t 30%

25 Performance Operation Stage CO 2 Reduction and Energy Savings in Building Typical Design Measures Taken in Design to Reduce CO 2 Building CO 2 Emission Building CO 2 Reduction (ton CO 2 /yr) 140 t/yr CO 2 Reduction (% of total building) Building Energy Consumption 200 MWh/yr Building Energy Saving (MWh/yr) Energy Saving (% of total Envelope design Ventilation design building) Lighting design Cooling design Total Reduction CCHP Generation (generated) N/A PV Generation (generated) N/A Energy Consumption: <100 kwh/sqm/yr 45% less than the baseline of HK s Building Energy Code (BEC)

26 ZCB Carbon Footprint 15:15, 12 March

27 Main Challenges Ensuring all technologies perform collectively as well as individually Many technologies are new and some are used for the first time in HK performance is yet to be fully tested Keeping up with the evolving technologies

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