Expensive not to be energy efficient

Transcription

1 Expensive not to be energy efficient Gregers Reimann Managing director, IEN Consultants Energy Efficiency and Green Building Consultancy Singapore Malaysia China 27 April 2016 Hanoi, Vietnam

2 Contents I. IEN Consultants intro II. Energy Labeling of buildings III. Energy Efficiency in Denmark and perspective for Vietnam If you re involved in a new project and you are not making it as green and low energy as possible, it will be functionally obsolete the day it opens and economically disadvantaged for its entire lifetime Mr. Jerry Yudelson (2008) national board member US Green Building Council IV. Energy Efficient Building Case Studies

3 IEN Consultants 3.2 million square meters of green building space Malaysia Singapore China Gregers (MD) Poul (Founder)

4 Energy / m2 year 50% Measured Energy Savings in Danish Buildings MEASURED ENERGY CONSUMPTION 50% reduction in heating per square meter for entire building stock

5 Mandatory Energy Label for Buildings All labels Real estate search for Copenhagen

6 Mandatory Energy Label for Buildings Label A only Real estate search for Copenhagen

7 412 Energy Efficient Buildings (Label A) Select Real estate search for Copenhagen

8 Energy Efficient Home (Label A) Monthly energy bill: kr 2213 Monthly energy bill: VND 7.1 million Real estate search for Copenhagen

9 ENERGY EFFICIENCY Denmark s experience GET A HAT Primary Energy Consumption (Petajoule per year) DENMARK

10 ENERGY EFFICIENCY Denmark s experience GET A HAT Oil crisis Primary Energy Consumption (Petajoule per year) DENMARK 50% energy reduction of the entire building stock (heating per m 2 ) Note: The graph excludes energy consumption for international shipping and flights, as well as embodied energy of imported goods Fossil fuels Fossil fuel fraction: 97% 80% %

11 ENERGY EFFICIENCY Denmark s experience GET A HAT Oil crisis Primary Energy Consumption (Petajoule per year) DENMARK Note: The graph excludes energy consumption for international shipping and flights, as well as embodied energy of imported goods Fossil fuels Fossil fuel fraction: 97% 80% %

12 ENERGY EFFICIENCY Three Fundamental Observations GET A HAT Primary Energy Consumption (Petajoule per year) VIETNAM? Fossil fuels Fossil fuel fraction: 79% 0%

13 Energy Efficient Buildings in South-East Asia EECCHI retrofit EECCHI retrofit Payback 3 years Measured Energy Consumption Buildings by by IEN Consultants Completion year

14 Fan Energy Small Power Lighting Chiller Energy Fan Gain Lighting Gain Small Power Gain Solar Gain Ext Conduction Gain Ppl Gain Dehumid Ppl Latent Gain Dehumid Fresh Air Fresh Air Gain kwh/m 2 year Building Energy Analysis with Computer Simulation Energy Index Building cases Worst Base Good mewc Low Energy Office building (Malaysia) Chiller Energy Breakdown

15 ENERGY EFFICIENCY Three Fundamental Observations LOCAL SOLUTIONS Full height glass Wonderful design!? Glary & hot Blinds everywhere User intervention! Malaysia Malaysia Taiwan

16 Case study case Energy Efficient Office case study DIAMOND BUILDING (SURUHANGJAYA TENAGA, 2010)

17 1/3 Energy Consumption AWARDS: 2012 ASEAN energy award Winner & 2013 ASHRAE Technology Award (2nd place)

18 DIAMOND BUILDING similar design with vernacular buildings Result of many SIMULATIONS Result of many GENERATIONS Book available free online:

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20 Atrium Daylight Design Tannenbaum reflector panel on levels 4 and 5 The atrium has been carefully designed optimize daylight utilization for each floor employing the combination of the following three strategies: 1. Automated blind with six different configuration to maintain the appropriate daylighting levels at all times. The blinds with 30% light transmittance are adjusted every 15 minutes and follow a three different control strategies for morning, mid-day and evening 2. The windows size becomes larger deeper into the atrium to cater for lower daylight levels 3. A band of Tannenbaum reflector panels are applied to 4 th and 5 th floor to deflect daylight across the atrium to 1 st and 2 nd floor where daylight levels are the lowest. The christmas tree profile reflectors have an inclination of 10 and reflect about 85% of the light in semi-diffuse manner, hence, avoiding visual glare issues for the building occupants.

21 Façade Daylight Design The building is 50% daylit. The façade daylighting system consists of a mirror lightshelf and a white painted window sill. Both deflect daylight onto the white ceiling for improved daylight distribution until 5 meters from the façade + 2 additional meters of corridor space. Installed office lighting is 8.4 W/m2, but 1-year measurements show consumption of only 0.9 W/m2 showing high reliance on daylighting Diffuse light deflected into room by lightshelf and window sill LIGHT REFLECTIONS FROM: Lightshelf + Window sill FACADE Self-shaded facade from direct sun Mirror lightshelf with fixed louver Lightshelf only Window sill only

22 Day-Lighting- Office Mirror lightshelf Fixed blinds for glare control Daylight reflected onto ceiling Typical Cross Section

23 kw cooling 0:20 2:50 5:20 Floor Slab Cooling in Diamond Building 7:50 10:20 12:50 15:20 17:50 20:20 22:50 1:20 3:50 6:20 8:50 11:20 13:50 16:59 19:29 21:59 0:29 2:59 5:29 7:59 10:29 12:59 15:29 17:59 20:29 22:59 1:29 3:59 6:29 8:59 11:29 13:59 17:04 20:04 22:34 1:04 3:34 6:04 8:34 11:04 13:34 16:04 18:34 21:04 23:34 2:04 4:34 7:04 9:34 12:04 14:34 17:04 19:34 22:04 0:34 3:04 5:34 8:04 10:34 13:04 15:34 18:04 20:34 23:04 Floor slab cooling system embedded in RC slab Illustration courtesy of: Greening Asia Emerging Principles for Sustainable Architecture. Copyright: Nirmal Kishnani, Publisher: FuturArc 19 C water COP of 16 possible! Thermographic image of floor slab cooling in ST Diamond Picture courtesy of: PS Soong, Pureaire Floor Slab Cooling Air handling units AHU Energy 26/9-2/10 FSC 26/9-2/ Mon Tue Wed Thu Fri Sat Sun 0

24 3-minute video Sustainable Features of ST Diamond Building available at Youtube:

25 CONCLUSION Expensive not to be energy efficient Buildings are Like a Leaky Bucket with lots of unnecessary wastages Plug the holes, and you are well on the way to a green energy efficient inexpensive building

26 Thank you Gregers Reimann Managing director, IEN Consultants Singapore Malaysia China How I commute in Kuala Lumpur (video link) 26 April 2016 Hanoi, Vietnam

27 Appendix slides

28 We are a diverse group of individuals 5 different degrees 6 different nationalities 4 LEED AP 8 GBI Facilitators

29 Energy Efficiency consultancy Senior Consultant curriculum Gregers REIMANN Roles: Energy Efficiency Consultant Gregers is the managing director of IEN Consultants, the pioneering green building consultancy in Malaysia, with offices in Singapore as well as China. He specialises in building designs that have good daylighting, are highly energy efficient and have excellent thermal and visual comfort. Nationality: Danish Language Skills: EN DA Based in: Kuala Lumpur, Malaysia Education: MSc Energy Engineering (Technical University of Denmark) Key project references during his 10 years of working in Asia include the Setia City Mall (first green certified shopping mall in Malaysia), the new IKEA in Kuala Lumpur (ongoing), ST Diamond Building (2012 ASEAN Energy Award winner) and the GEO Building designed to be a zero energy office building. Other green projects include the KLIA2 airport terminal, the KL Eco City, the Pertamina Energy Tower the first skyscraper designed to be ZERO energy and energy efficiency building retrofit works incl. daylight retrofitting of the Asian Development Bank in Manila. Gregers has also been a technical reviewer for the EU Energy-Efficiency Buildings project and is newly appointed Chairman of the Energy Efficient Buildings committee under the EU-Malaysian Chambers of Commerce and Industries (EUMCCI). Gregers regularly contributes to green building articles and frequently guest lectures at universities internationally. He has a keen interest to pursue innovative and integrated design solutions bridging the gap between architects and engineers. Gregers is also walking the talk with respect to green living habits, which includes commuting to work by a foldable electric bicycle that combines easily with public transport.

30 Green Building consultancy Senior Consultant curriculum Kevin SULLIVAN Roles: Green Building Consultant Kevin has been a carpenter, community organizer, educator, and environmental entrepreneur. Since 2008 he has founded and led two leading sustainability consulting firms in India and Singapore. Kevin has been a design consultant on more than one hundred building projects across the United States, Middle East, India and Asia. Nationality: American Language Skills: EN FR Based in: Singapore Education: MCP in Urban Planning (MIT) MA in Urban History (Columbia University) An expert on green schools, Kevin has developed energy-efficiency strategies and educational tools to teach and engage students in green design concepts for top international K-12 schools across Asia. In 2006 he served as a Fulbright Scholar at India s premier environmental think tank, The Energy and Resources Institute in New Delhi. Before moving to India, Kevin was a Policy and Project Director for one of the largest US communitybased housing NGOs, where he pioneered the first low-cost urban green homes. Kevin was an Adjunct Professor in the Urban Environment at Queens College as the City University of New York. Kevin is trained as an architect and urban planner and writes and speaks widely on urban and environmental issues. He has an MCP in Urban Planning from the Massachusetts Institute of Technology and an MA in Urban History from Columbia University. He lives with his family in Singapore.

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32 Case study no kwh/m2 year case BEFORE retrofit Energy Efficient Retrofit case study EECCHI OFFICE RETROFIT (JAKARTA, 2011) AFTER retrofit

33 BEFORE 170 kwh/m 2 yr temp ( C) No No Energy Comfort 75 RH (%) 57 db Noise 80 kwh/m 2 yr temp ( C) 55 RH (%) 53 db Daylight Yes View out Yes AFTER

34 BEFORE RETROFIT o Vertical blinds blocking most of the daylight o Suspended ceiling o Central airconditioning o Leaky windows AFTER RETROFIT o Mirror lightshelf on external ledge reflecting diffuse daylight onto the high ceiling (suspended ceiling removed) o Perforate venetian blinds o Extra window pane o VRF air-con with CO 2 sensor

35 0:00 2:00 4:00 6:00 8:00 10:00 12:00 14:00 16:00 18:00 20:00 22:00 Measured indoor climate: Before vs. After Temperature in Office ( C) Termal comfort BEFORE retrofit AFTER retrofit 22 hour of the day

36 Case study no. 3 case ZERO Energy Bungalow EARTH BERM HOUSE (KUALA LUMPUR, 2015)

37 INNOVATION: Night Sky Cooling Bungalow 100% natural cooling, no air-conditioning The roof at night! What is the coolest place of the building? To be completed June of 2016 Similar design by Design Unit Sdn. Bhd.

38 ENERGY EFFICIENCY Three Fundamental Observations DON T OVER-PACK Building owners get double-penalty of: o Higher CAPEX (higher construction cost) Building owner o Higher OPEX (higher operating cost) Cartoon by IEN Consultants. The Star newspaper (2014)

39 BEI (kwh/m2/year) Energy Consumption, BEI (kwh/m2 year) Lowest construction cost Energy Efficient Office Building also the Cheapest (Final 10 tenders for KKR HQ project) 250 BEI vs. Tender Price DON T OVER-PACK 200 Open Tender Results Office building, Malaysia Energy Efficient Bidders assisted by IEN Consultants 2014 photo Price Tender price index Cheaper Cost