Energy Efficiency & Sustainable Building Design

Transcription

1 Energy Efficiency & Sustainable Building Design Günter Löhnert New York, November 14, 2017 Facilitator

2 Paul-Wunderlich-Haus, Eberswalde BSU, Hamburg Energy Efficiency & Sustainable Building Design - Experiences from Selected Buildings in Germany - Energy Plus School, Hohen Neuendorf Zero Energy House, Seoul Dr. Günter Löhnert loehnert@solidar-pw.de phone sol id ar planungswerkstatt Barstraße 10, Berlin Central Building Leuphana Uni, Lüneburg 2

3 solidar planungswerkstatt Scope of Services Consulting in Energy Efficiency and Sustainable Building Design from Requirements Planning until Optimization of Building Operation Project Management and Coordination by Facilitating Integrated Design Processes New Buildings and Retrofit Projects of Residential and Commercial Buildings Acquisition of Funding and Settlement of the Project Building Research and Development (R&D) Cooperation with Universities and Reasearch Institutes Assessment of Sustainability in Building Design Accredited Professional DGNB, BNB and NaWoh 3

4 Content Sustainability Assessment DGNB / BNB Project Experiences / Best Practice Buildings - Paul-Wunderlich-Haus in Eberswalde - New Headquarter BSU in Hamburg - Energy Plus Primary School in Hohen Neuendorf Conclusion 4

5 International Sustainable Building Assessment Systems Nigeria Kenya Namibia.. significantly increased during the last 8 years.. (without any claim to be complete) 5

6 DGNB / BNB Overview on Categories / Criteria Groups Economic Quality Ecological Quality 22,5% Socio-cultural and Functional Quality 22,5% Process Quality 10% 100% 22,5% 22,5% Technical Quality The assessment system includes 6 categories 5 categories represent building performance weighting is different Location Profile The category Location Profile is stated separately 6

7 BNB Assessment System New Office Buildings 40 Criteria 6 Criteria 46 Criteria 123 Sub-Criteria 31 Sub-Criteria 154 Sub-Criteria 7

8 GOLD Paul-Wunderlich-Haus Pilot Certification_V1_ ,5 % 1,18 77,9 % Process Quality (10 %) Ecological Quality (22,5 %) 91,2 % Systematic Commissioning Global Warming Potential Quality Assurance of Building Construction 50 Quality of Executing Companies /.. Prequalification 49 Building Site, Building Process 48 Requirements for an Optimal. Utilisation and Management 47 Sustainability Issues in Tender and Placing 46 Optimization and Complexity of Planning 45 84,6 % Integrated Design 44 Project Preparation 43 Technical Quality (22,5 %) 02 Ozone Depletion Potential 03 Photochemical Ozone Creation Potential 04 Acidification Potential 05 Eutrophication Potential 06 Risks to the Local Environment 08 Sustainable Logging / Wood 10 Primary Energy Demand Not Renewable (PE nre ) 11 Total Primary Demand and Amount of PE re 14 Fresh Water Demand and Quantity of Wastewater 15 Demand of Space Dismantling, Separation and Utilisation 42 Cleaning and Maintenance 40 Heat Insulation and Protection.. against Condensate 35 Sound Insulation 34 Economic Quality (22,5 %) 16 Building-related Life Cycle Costs 17 Stability of Value 100 % Fire Protection 33 87,4 % Socio-cultural and Functional Quality (22,5 %) 30 Bicycle Comfort 26 Barrier-free Building 22 Visual Comfort 18 Thermal Comfort in Winter 31 Design and Urban Quality 27 Space Efficiency 23 Influence of the User 19 Thermal Comfort in Summer 32 Art in Architecture 28 Capability of Conversion Building-related Outdoor Qualities 20 Indoor Air Quality 29 Public Accessibility 25 Safety and Incident Risks 21 Acoustic Comfort 8

9 Architect: GAP Berlin Paul-Wunderlich-Haus 99

10 Paul-Wunderlich-Haus Architect: Thomas Winkelbauer, GAP Berlin Bioclimatic Design: teamgmi, Vaduz Innovative Climatic Building Design by Use of Geothermal Energy Primary Energy Demand100 kwh/m²a for Heating, Cooling, Ventilation and Lighting m² BGF Dezernat 2 Dezernat 1 Building Cost KG /m² (NFA) Landrat Parking garage Dezernat 3 5 Buildings DGNB-Gold-Certifikate Best score of 1,18 (01/2009) 10

11 Paul-Wunderlich-Haus User Flexibility Different Spatial Variants and Office Concepts Single Offices / Cell Offices Double Office Spaces / Group Offices Combi Offices (Home Base plus Core Zone) Open Plan Offices Clustered Working Places in Landscape Offices Service Areas Landscape Office Cell Offices Combi Offices (Home Base + Core Zone ) 11

12 Paul-Wunderlich-Haus: Features Pavillonplatz Winner of Competition: GAP PWH the New Center Concept of Night Flushing Individual Lamp Development Energy Concept Thermal Comfort Renewable Energy 593 Energy Piles out of 850 drilled piles of approx. 9 m each Photovoltaik (120 kwpeak / ca m²) on the roof and at the facade of park garage. 12

13 Primary Energy Demand (2007) < 50% EnEV (< 100 kwh/m²a) National Funding Programme Integrated Design Process Reports and Documents Analysis and Evaluation EnOB EnBau EnSan Monitoring and User Acceptance Analysis Material for Education Lean Building Strategies Renunciation of Large Mechanical Cooling Energy Efficiency and Solar Optimization Sequential Workshops 13

14 Process Quality to Ensure Energy Performance Purchased Energy Demand Building stock in Germany New Buildings in Germany Target according to competition Calcutated values of pre-design Calcutated values of design Monitoring Monitoring Data 2009 Values do not include cooling and ventilation for specific usage such as server, printer rooms, etc. EnOB Requirements Energy Benchmarks: Continuous update through the entire design process PE < 100 kwh/m²nfa Data heating cooling ventilation lighting 14

15 EnBau Building Costs Paul-Wunderlich-Haus high medium low Building Costs [ /m² NFA] High Quality at Moderate Costs Reference 15

16 Architect: sauerbruch hutton Berlin BSU Administration Building Hamburg 16

17 BSU-Neubau in Hamburg-Wilhelmsburg BSU New Headquarter in Hamburg-Wilhelmsburg 4 Ambitious Goals 1. Primary Energy Demand 70 kwh/m²a 2. Heating Demand 15 kwh/m²a 3. DGNB Certificate GOLD 4. Building Costs /m²gfa 17

18 BSU Hamburg - Wilhelmsburg Heated Net Floor Area NFA 46,557 m² Atrium in the center of each sector Completed in May 2013 Approx employees 18

19 BSU Hamburg Wilhelmsburg: Impressions 19

20 BSU Hamburg Wilhelmsburg: Impressions 20

21 BSU Hamburg: Focus Comfort at Workplaces Thermal Conditioning and Ventilation Thermal Comfort Daylight and Electric Lighting Solar Control and Glare Protection Occupants Information & User Coaching Detailed Energy Monitoring Monitoring of Comfort and User Satisfaction Assessment of Sustainability: Certificate 21

22 1 Thermal Conditioning and Ventilation Heating and Ventilation in Winter Cooling and Ventilation in Sommer Thermally activated ceiling for heating Pre-heated intake air Exhaust air via noise protected overflow elements Intake and exhaust air via window or night ventilation louver Thermally activated ceiling for heating Exhaust air via noise protected overflow elements Atrium Atrium Night ventilation Office Corridor Office Corridor Thermal conditioning by activating the floor in selected areas Thermal conditioning by activating the floor in selected areas source: ARGE sha / R&R / OPB 22

23 4 Solar Control and Glare Protection 6 Office Façade 1 Façade element 2 Opening 3 Manual night ventilation louver, acoustic efficiency 4 Acoustic panel 5 Venetian blind, motorized 6 Glare protection, manually 9 Reflecting surface 10 Suspension point 12 Raised floor 14 Reinforced concrete ceiling source: sha / sol id ar 23

24 5 Occupants Information / User Participation Office Façade 1 Façade Element 2 Opening 3 Manual night ventilation louver, acoustic efficiency 4 Acoustic panel 7 Ceramic covering, partially benden round 8 Metal plate siding, partially benden round 13 Reinforced concrete pillar source: sha / sol id ar 24

25 Plus Energy School in Hohen Neuendorf 25

26 Energy PLUS Concept Highly insulated building envelope according to passive house standard New hybrid ventilation concept combines natural and mechanical venting Optimized daylighting performance providing max. daylight autonomy Use of renewable energy sources such as biomass and solar energy (PV) Integration of innovative building components i.e. switchable glazing 26

27 GROUND FLOOR 1 classroom 2 small classroom, flex room 3 groups, multi-functional area 4 specialist rooms 5 administration, teachers 6 wardrobe 7 collection room 8 teaching material 9 library 10 kitchen 11 cafeteria, assembly hall 12 sport equipment 13 sports hall 14 after-school care club 15 Teachers` lounge 16 HVAC equipment room 27 27

28 Integrated Concept of Home Area Different Configurations Spatial extension into the corridor Exhibition Rest area Small Groups Project Teamwork Lecture and Relax 28

29 Home Base Hybrid Ventilation Overflow area Classroom Multifunctional area Natural Ventilation Mechanical Ventilation Hybrid Ventilation 29

30 Home Base Natural Ventilation motor controlled full-height ventilation windows warm air cool air Additional windows for manual operation 30

31 Daylight and Solar Control 31

32 Home Base Daylight and Solar Control Daylight from two sides Daylight from one side Lightshelf Redirected sunlight Diffuse light 32

33 ENERGY PERFORMANCE towards ENERGY PLUS Primary Energy Demand: 23 kwh/m 2 a Primary Energy Generation: 24 kwh/m 2 a Resulting PE Demand: < 0 kwh/m 2 a Integrated PV Plant: 55 kw peak 33

34 Life Cyle Costs (LCC) Life Cycle Cost comparison of a German standard new building according EnEV 2009 and the new school accumulated for 50 years based on 4% of annual energy price rise 34

35 Energy PLUS School, BNB Gold 35

36 Conclusions on EnOB Experiences 1. We do have the knowledge on suitable energy efficient and sustainable technologies we only have to implement our experience in a reasonable way however Conclusion 2. An Integrated Design Process is inevitable for future Zero or Energy Plus Building Concepts in order to ensure comfort and save energy and operating costs on a life cycle consideration. and please consider 3. If properly designed, energy efficient sustainable buildings will produce no extra building costs and accordingly 4. Successful buildings require good planning by qualified interdisciplinary planners from the very beginning. The investment into a Design Team is the most profitable yield for the client. 36

37 Thank you for your patient attention! Dr. Günter Löhnert phone sol id ar planungswerkstatt Barstraße 10, D Berlin Germany Facilitator