The German Sustainable Building Certification System DGNB Best Practice Examples from Thailand Dr.-Ing. Robert Himmler 25.09.2017 Bangkok, Thailand
Sustainable buildings and neighborhoods Theory and Practice! Energy Plus Buildings Energy and sustainability concept for zero and plus energy buildings DGNB Academy Providing DGNB Trainings to Students and Professionals Life Cycle Costs of Buildings Calculation of economic efficiency of energy saving measures EGS-plan Germany - Established 20 years ago - More than 70 engineers working on energy efficient buildings - Foreign subsidiary with 8 engineers in Bangkok Engineering Services - energy and sustainability concepts - Building Simulation - MEP Design - Sustainable Building Certification 2
What is a Sustainable Building? Green Building? 3
What is a Sustainable Building? Smart Building? Integrated Building Automation and Energy management System Application User interaction (Optional) Internet (Cloud) Weather Station Ethernet HVAC, Ventilation, and Cooling HVAC BAS Router Z1 Lighting + presence detections Programable Thermostat Zone control FCUs Heat Recov ery Energy Analy sis Ov erride switches Presence detections/ motion sensors Power meter Z2 Lighting Panel Programable Thermostat Zone control FCUs Dim controller Chilled water pump Ov erride switches 4
What is a Sustainable Building? LEED certified building? 5
LEED Gold Building in Bangkok No external shading! Supply Air Temperature: 10ºC! Occupants close air grill to avoid draft! 6
Green vs. Sustainable* Ecological Quality Economical Quality Sociocultural Quality *Definition of Sustainability according to the Brundtland report (1987, United Nations World Commission on Environment and Development) 7
DGNB Criteria Overview Ecological Quality (22,5 %) - Full LCA (Life Cycle Assessment) - Water Consumption - Healthy Materials - Economical Quality (22,5 %) - Full LCC (Life CycIe Cost Calculation) - Cleaning Costs - Flexibility (space, building services ) - Sociocultural Quality (22,5 %) - Indoor Air Quality - Thermal Comfort - Lighting - Design for All - Resting Area - Technical Quality (22,5 %): Building Envelope, Cleaning and Maintenance, Process Quality (10 %): Design Concept, Commissioning Management, 8
Checklists vs. Performance Rating Tool based on Checklists Input Output?? Photovoltaic system Water-saving fittings Geothermal energy Greening Small wind turbine Lighting control ü ü x ü x x DGNB based on Performance Input Water Output Waste water Material Energy Waste CO2 System boundary 9
Who is the DGNB? (DGNB = German Association for Sustainable Buildings) 10
DGNB System Certification 11
DGNB Pilot Certification of the Häfele Design Center in Phuket: First DGNB Gold in South-East Asia The Häfele Design Center: Commercial Building Design center for building products Around 4000 m 2 Sustainable Design by German Architect Finished in 2007 DGNB Pilot Certification: Adaption of the DGNB system to tropical climate Test of applicability Promotion of the Client [Architecture: OIA] 12
Improved Microclimate around the Building through shading and natural ventilation [Architecture: OIA] 13
DGNB Pilot Certification of the Häfele Design Center in Phuket: First DGNB Gold in South-East Asia Application of the DGNB system in Tropical Climate is possible Through a sustainable design a high certification ranking can be achieved Client is very satisfied with the result Gold 14
[source: unexpected architects] The Pruksa+ Project in Bangkok Idea: Design of a Pilot single family house Fulfil Energy Plus Standard Sustainable Building Certification according to DGNB Project Partners: Project Owner General Contractor Bangkok Architect DGNB certification Energy Design DGNB certification The plant Estique 15
Holistic Shading Concept for Roof, Walls and Windows 16
Internal Thermal Insulation Insulated Frames Metal Studs for internal Insulation Internal Insulation (Mineral Wool) before closing the Wall Insulated PVC frame (Pruksa+: double glazing) 17
Air-tight building envelope Fresh Air Ventilation with Energy Recovery Air-tightness concept Air-tightness measurement Decentralized Ventilation with Energy Recovery 18
Electric Load [W] / PV Power [W] Energy demand and generation 4000 3500 3000 2500 Solar Yield 2000 1500 1000 Air-Conditioning 500 0 Appliances 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Total Demand PV Generated Appliances / Light 19
Energy Supply with 5 kw PV field and 1000 l ice storage PV Field (5 kw) Household appliances Public Grid Water cooled Cold Water Chiller Dry Heat Rejection 1000 l Ice Storage Fan Coils (6,8 kw) Domestic Hot Water Storage Bathroom 20
Electric Load / PV Power [W] Optimized Load Curve with Ice Storage 4000 Solar Yield 3500 3000 2500 2000 1500 1000 500 Air-Conditioning Appliances 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time Electric Demand PV Generated Supply from Grid 21
Ice Storage System Ice Storage Domestic Hot Water DHW Chiller Technical Room Pruksa House Ice Growth around Pipes 22
Further Sustainability Features! TVOC Measurement Access for All! Waste Separation Green Wall Daylight Use 23
The Pruksa+ House First DGNB Platinum Certification of a single family house outside of Germany! Platinum 24
The New Grohe Zinc Die Casting Factory Project Grohe is a manufacturer of water fixtures Since 1996 in Thailand (Klaeng / Rayong) Due to increased demand for water fixtures the expansion of the existing factory was decided. Bangkok Grohe Main Requirements: New 15.000 m 2 production facility Die Casting production for Water Fixtures Production offices No air-conditioning in the factory New Factory 25
Temperature distribution for different roof configurations Model 5: 5º Gabel roof (Atrium 37.5 x 116.5 m) Model 6: 5º Hip roof (Atrium 40 x 75 m) Model 7: 5º Gabel roof (Atrium 4 x 135 m) Temp [Cº] 34.28 35.01 35.74 36.46 37.19 37.92 38.64 39.37 40.10 40.83 41.55 42.28 26
Energy Efficiency Features High efficient Water Cooled Cold Water Chiller VSD Pumps LED Lighting 1 MW p PV system for self-consumption Energy Monitoring system 27
Inside and Outside Resting Area 28
Daylighting Optimization 29
Why? Why not? 30
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