GREEN ASPECTS OF HIGH-PERFORMANCE FAÇADE

Transcription

1 GREEN ASPECTS OF HIGH-PERFORMANCE FAÇADE GLASSTECH ASIA 2014 THE GREEN BUILDING SEMINAR 2014 ALVIN MICHAEL VELASCO, LEED AP BD+C, O+M LEED CONSULTANT MECHANICAL DESIGN MANAGER ALT CLADDING, INC.

2 OVERVIEW I. Why High Performance? A. Considerations B. Different Approaches C. Project References II. Challenges and Opportunities III.Benefits of High-Performance Façade

3 WHY HIGH PERFORMANCE?

4 SUSTAINABLE TECHNOLOGICALLY ADVANCED Image courtesy: James Law Cybertecture International

5 CURRENT SCENARIO 76% of building energy comes from fossil fuels. Source: Facade Retrofits: The Dilemma of the Highly Glazed High-Rise Facade

6 CURRENT SCENARIO The building sector produces 47% of all green house gases. Source: Facade Retrofits: The Dilemma of the Highly Glazed High-Rise Facade

7 CURRENT SCENARIO Building façade accounts for almost 50% of the thermal loads in buildings in the tropics Source: Facade Technologies, Solar Energy Research Institute of Singapore

8 START BUILDING GREEN!

9 GREEN ASPECTS 1. Insulating property Image courtesy:

10 Occupant Comfort Considerations

11 Considerations Energy Efficiency Image courtesy: tpav.com.au

12 Considerations Surface and Interstitial condensation

13 Performance Metrics U-value ETTV OTTV Thermal simulation of a curtain wall Image courtesy: building-enclosure.com

14 Approach Double/Triple Glazing units Image courtesy:

15 Double Glazing/Triple Glazing Sun Life Headquarters China Huaneng Group Headquarters China Zun Beijing Z15

16 Approach Double skin facade Image courtesy:

17 Double Skin View inside the cavity Image courtesy: archdaily.com

18 GREEN ASPECTS 2. Openings Image courtesy:

19 Approach Natural ventilation Image courtesy:

20 Operable window CSCEC Tower (China) - office building * utilized vertical fins, high performance IGU and operable window

21 Glazed areas Leatop Plaza (China) - office building * full height glass, high performance IGU

22 Glazed areas Torre Costanera (Chile) - office building * full height glass, high performance IGU (triple silver low-e coating)

23 GREEN ASPECTS 3. Daylight Lightshelves Windows Rooflights

24 Considerations Heat gain Variations in daylight availability Glare control Daylight map from DesignBuilder

25 Approach Lightshelves Hysan Place

26 Approach High VLT/Low SC glass Image courtesy:

27 High VLT/Low SC Glass Torre Costanera (Chile) - office building - high performance IGU (triple silver low-e coating) - VLT: 58% ; SC: 0.36

28 GREEN ASPECTS 4. Solar Radiation Control Image courtesy: continuingeducation.construction.com

29 Performance metrics Shading coeff./ Solar heat gain coeff.

30 Approach High Performance shading device Marina Bay Financial Centre (Singapore) - mixed use development * utilized horizontal fins and high performance IGU

31 Approach Automated louvers/blinds Image courtesy: Construction Specialties

32 Automated Blinds Terry Thomas Building - blinds are controlled by a rooftop sensor that measures the light level and sun angle Images courtesy of greensource.com

33 Fritted glass Ocean Financial Center Redevelopment (Singapore) - office building * Utilized High performance IGU with Frit patterns

34 Electrochromic/Smart Glass TD Bank Image courtesy:

35 GREEN ASPECTS 5. Address Infiltration

36 Effect 30-50% of the heat lost/gained in structures (not airtight buildings)

37 Approach High Performance Sealants/Strips High Performance Sealant Application

38 CHALLENGES AND OPPORTUNITIES

39 CHALLENGES AND OPPORTUNITIES Adaptation to new technologies Cost issues Reliability

40 CHALLENGES AND OPPORTUNITIES Better simulation and design tools Image Courtesy: Thyssen Solartec/Franzen group Ziger/Snead

41 CHALLENGES AND OPPORTUNITIES Better tools for commissioning and building operations Image courtesy: 3-D Building Technologies Encompass

42 CHALLENGES AND OPPORTUNITIES Existing Building Improvement Recladding Installation of high-performance façade

43 BENEFITS OF HIGH-PERFORMANCE FAÇADE

44 BENEFITS Optimum window design and glazing specification can reduce energy consumption from 10-50% compared to typical practice in most climates Source: Whole Building Design Guide Image courtesy: mech.hku.hk

45 BENEFITS Double-skin façade has shown a 12% annual savings in annual total energy consumption Source: Study on naturally ventilated double-skin façade in hot and humid climate,rosady Mulyadi

46 BENEFITS Application of electrochromic glass has demonstrated a 19-26% reduction in maximum peak demand power for cooling Source: LBNL Image courtesy: itglass.mx

47 BENEFITS Onyx Solar s BIPV façade and roof system can result in a 25-40% reduction in building energy consumption Source: Onyx Solar

48 BENEFITS A healthy indoor climate was shown to lead to a 2.5% drop in absenteeism Source: John Bergs. The Effect of Healthy Workplaces on the Well-Being and Productivity of Office Workers, Amersfoort, The Netherlands, p7

49 BENEFITS Students in classrooms with the highest levels of daylight performed 7% to 18% higher on standardized tests Source: Heschong Mahone Group. Daylighting in Schools: An Investigation into theö, for the Pacific Gas and Electric Company, Fair Oaks, CA, p. 4.

50 BENEFITS Productivity boosts by 7.1% annually by improving indoor air quality, increasing daylight and controlling office temperatures Source: Salt Lake Tribune

51 THE MINUTE YOU SETTLE FOR LESS THAN YOU DESERVE, YOU GET EVEN LESS THAN YOU SETTLED FOR -Maureen Dowd

52 -End- Thank you for listening! ALT CLADDING, INC. 8/F MARAJO TOWER, TH STREET, WEST CORNER 4 TH AVENUE, BONIFACIO GLOBAL CITY, TAGUIG CITY, PHILIPPINES TEL: FAX: mech@cladding.com philippine@cladding.com WEBSITE: