Pierre Jaboyedoff Indo-Swiss Building Energy Efficiency Project

Transcription

1 Pierre Jaboyedoff Seminar on Integrated Approach to Energy Efficient Building Design Jaipur, 16 December 2013

2 Demographic growth Urbanisation Sustained economic growth Unprecedented growth in the Building sector 2

3 Billion (m2) 35 Estimations of the Indian Building Stock until Residential Buildings Commercial Buildings 5 0 2, , , , , , Built-up area Germany + France

4 Year: Source: Energy Statistics -2012, Ministry of Statistics and Programme Implementation, GoI 4

5 Multiplying factor 3.5 Increase in final electricity consumption per sector in India since 1992 (base 1992) Residential Sector Commercial Sector Transport Industry Agriculture

6 Posted in Bhavnagar, Gujarat, in CSMCRI 6

7 Solar protection with a Solar Heat Gain Coefficient < 12 % Justification of the strategies against overheating for the active cooling clearance Since 1992 SOCIETE SUISSE DES INGENIEURS ET DES ARCHITECTES. Norme SIA V 382/3: preuve des besoins pour les installations de ventilation et de climatisation. SIA, Zurich,

8 Applications of sophisticated tools during the integrated design process Paradox of high energy performance Energy efficient buildings and systems: The simpler and more bioclimatic the buildings are, the more complex the design process is More sophisticated design tools needed Systemic analysis Example: Natural and hybrid ventilation systems Evaporative cooling No wind The higher offices are not sufficiently cooled the first level offices are correctly cooled 600 W /m2 at 11h00 SOUTH facade 8

9 Swiss Federal Office Tower 9

10 Swiss Federal Office Tower 10

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12 Four Components Component 1: To promote an integrated design approach with a focus on energy efficiency at an early stage on large projects Component 2: To reinforce insulation materials testing procedures Component 3: A.To develop design guidelines and a Minergie-India label for residential buildings; B.To prepare design templates for public buildings in selected states Component 4: To build capacity and disseminate knowledge 12

13 To exchange Swiss know-how of practicing Integrated Design Process (IDP) for designing energy efficient buildings with Indian building sector stakeholders To promote and mainstream Integrated Design Practices for incorporating energy efficient strategies and technologies Capacity building of local project team Dissemination of charrette experiences to larger community of interest 13

14 Climate-responsive design Natural ventilation Solar protection Radiant cooling Day-light Efficient HVAC Evaporative cooling Desiccant cooling Etc 14

15 Conduct charrette early in the design process To tap maximum energy saving potential with minimum or no cost implications No disruption to the project delivery time lines Concept design Schematic design Design development Construction drawings Construction Commissioning > Integrated design process charrette < Energy saving potential Efforts / Costs 15

16 Develop energy efficiency concept specific to the project considering project s Climate conditions Site context Site Topography Site Vegetation Site Location 16

17 Develop energy efficiency concept specific to the project considering project s Climate conditions Site context Building Typology Public Office Building Private Office Building Mixed Use Building 17

18 Develop energy efficiency concept specific to the project considering project s Climate conditions Site conditions Building Typology Project Ownership leased to tenants Owner Occupied Core & Shell Partially Occupied by the Owner sold to tenants 18

19 Develop energy efficiency concept specific to the project considering project s Climate conditions Site conditions Building Typology Delivery Project Ownership Occupancy Mode 1 ½ shift operation (12 hrs) Single shift operation(8hr s Operation) 3 shift operation (24 hrs) 2 shift operation (16 hrs) 19

20 Develop energy efficiency concept specific to the project considering project s Climate conditions Site conditions Building Typology Delivery Project Ownership Occupancy Financial Constraints Budget Approval Process Overall Budget Project Financial Closure Payback 20

21 Selection of Project Climate Analysis Sun Eye Analysis Estimation of Baseline EPI through Energy Simulation Listing of Feasible Strategies 21

22 Climate Analysis Sun Eye Analysis Estimation of Baseline EPI through Energy Simulation Listing of Feasible Strategies 22

23 Climate Analysis Sun Eye Analysis Estimation of Baseline EPI through Energy Simulation Listing of Feasible Strategies 23

24 Climate Analysis Sun Eye Analysis Estimation of Baseline EPI through Energy Simulation Listing of Feasible Strategies 24

25 Four Day Interactive Workshop BEEP Team Project Team 5-7 Members 6-8 Members Senior Swiss Experts: one architect, one engineer Assistant Engineer Charrette Moderator Charrette Coordinator Collaborative Work Knowledge Exchange Project Client Project Developer PMC Architect MEP / HVAC Consultant Energy Consultant Green Building Consultant Landscape Consultant 25

26 1. Exploration of Climate Responsive Design Dynamic energy simulations: using TRNSYS and Energy Plus, to estimate the energy saving potential of the proposed strategies Computational Fluid Dynamics Analysis for evaluating special energy saving strategies Parametric Studies to test a series of individual and combined solutions Cost Assessment of Strategies 26

27 Exploration of Climate Responsive Design 2. Dynamic energy simulations: using TRNSYS and Energy Plus, to estimate the energy saving potential of the proposed strategies Computational Fluid Dynamics Analysis for evaluating special energy saving strategies Parametric Studies to test a series of individual and combined solutions Cost Assessment of Strategies ORIENTATION ORIENTATION WHEATHER FILES LIGHTING 28/02/2012 EXTERNAL AND INTERNAL BLINDS EXAMPLE OF TRNSYS MODEL OF AN INDIAN BUILDING CEILING FANS INCLUDING SCHEDULES AND REGULATION OVERHANGS AND FINS DEVICES INCLUDING SCHEDULES OF USE AIR CONDITIONERS OCCUPATION SCHEDULES NATURAL VENTILATION, INCLUDING SCHEDULES AND AND CONTROLS REGULATION OUTPUTS POWER TEMPERATURE 27

28 Exploration of Climate Responsive Design Dynamic energy simulations: using TRNSYS and Energy Plus, to estimate the energy saving potential of the proposed strategies 3. Computational Fluid Dynamics Analysis for evaluating special energy saving strategies Parametric Studies to test a series of individual and combined solutions Cost Assessment of Strategies 28

29 Exploration of Climate Responsive Design Dynamic energy simulations: using TRNSYS and Energy Plus, to estimate the energy saving potential of the proposed strategies Computational Fluid Dynamics Analysis for evaluating special energy saving strategies 4. Parametric Studies to test a series of individual and combined solutions Cost Assessment of Strategies 29

30 Exploration of Climate Responsive Design Dynamic energy simulations: using TRNSYS and Energy Plus, to estimate the energy saving potential of the proposed strategies Computational Fluid Dynamics Analysis for evaluating special energy saving strategies Parametric Studies to test a series of individual and combined solutions 5. Cost Assessment of Strategies 30

31 Report submission by BEEP team within 2 weeks time Comparison of strategies by simulation (Baseline and optimal solutions) Cost benefit analysis Technical support during project development 1st Meeting after 12 weeks 2nd Meeting after 24 weeks 31

32 6 Charrettes were conducted so far 2 Public Office Buildings 1 Commercial Office Building 1 Mixed use building (Retail + Office) 2 Information Technology Park Saving potential of 25-47% Next Call for EOI will be opened One of the charrette will be presented in this seminar 32

33 Example of a high performance office building in India New ways of designing and integrating technologies in India 33

34 Old New Glass cost ` 230 per sq.ft Glass cost ` 225 per sq.ft Heat ingress from glass 3.8 W/sq.m Heat ingress from glass 1.1 W/sq.m 3 34

35 35 Use of simulations to validate strategy North South facing building with 16 m width to ensure 80% of spaces are day lit 35

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37 100% daylit spaces

38 Manages sensible and latent heat loads independently Radiant cooling system uses 16 deg C chilled water for sensible cooling Requires 80% less air than conventional buildings. (Air only for ventilation and latent heat removal Low pressure drop design for air and water distribution 38

39 Business as usual USA Business as usual (24/24 hours) India Swiss Federal of Statistics Tower 35 Infosys Hyderabad 85 39

40 Four Components Component 1: To promote an integrated design approach with a focus on energy efficiency at an early stage on large projects Component 2: To reinforce insulation materials testing procedures Component 3: A.To develop design guidelines and a Minergie-India label for residential buildings; B.To prepare design templates for public buildings in selected states Component 4: To build capacity and disseminate knowledge 40

41 Energy Consumption in kwh Energy Consumption in Housing 117 kwh/m 2.y Electricity savings potential of 70% 65 kwh/m 2.y 35 kwh/m 2.y Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Household with 2 Acs Conscious User with 2 ACs Household with 4 Acs 41

42 % Energy Used for Cooling Cooling Others 42

43 Reflecting paint/ cladding Insulation 43

44 AAC Block Hollow Fired Clay Block Cavity Wall Insulated Wall Rat Trap Bond Masonry 44

45 Reasonable window to wall ratio Fixed Shading External Movable Shading Double-Glazed Windows 45

46 Interior blinds SHGC 75% - 40% 46

47 External movable blinds SHGC < 10% 47

48 Single-sided Ventilation Cross- Ventilation Stack Ventilation 48

49 No solar protection of Interior blinds SHGC 75% - 40% 49

50 Natural ventilation for getting the heat out in winter and mid-season SHGC 75% - 40% Get the heat out in winter and midseason or at night 50

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52 Solar Water Heating & Solar Electricity Generation 52

53 1. a) insulate the roof b)clad or paint it to reflect solar radiation 2. Reduce heat ingress from walls 3. Reduce heat ingress from windows (efficient solar protection preferably outside) 4. Design for good natural ventilation 5. Energy efficient appliances 6. Use Solar Energy 53

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