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IGBC/BEX Presentation

Apr 13, 2017

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Page 1: IGBC/BEX Presentation

www.inhabitgroup.com

Are We Ignoring True Façade Performance In Singapore?

Page 2: IGBC/BEX Presentation
Page 3: IGBC/BEX Presentation
Page 4: IGBC/BEX Presentation
Page 5: IGBC/BEX Presentation

BUILDING PHYSICS/ SUSTAINABLE DESIGN TEAM

JESSICA HOGGAssociate

GEORGE COUTTSSenior Building Physics/ Mechanical Services Engineer

James Von DinklageBuilding Physics Engineer

SAMANTHA ANDERSONSenior Building Physics/ Renewable Energy Engineer

SOPHIA KEESenior Sustainable Design Consultant

DAVID CARROLBuilding Physics Engineer/ Software Developer

DARREN O’DEAPrincipal

DENNIS CHANGBuilding Physics/ Façade Engineer

Page 6: IGBC/BEX Presentation

Shading Optimisation

Rating Tools (Green Mark, LEED, Green Star, etc)

Condensation Risk

Energy Modelling

Daylight Design

Visual and Thermal Comfort

Thermal Fracture

Thermal Performance

Passive House

Wind Studies

SENSE - BUILDING PHYSICS + SUSTAINABLE DESIGN SERVICES

Page 7: IGBC/BEX Presentation

Shading Optimisation

Rating Tools (Green Mark, LEED, Green Star, etc)

Condensation Risk

Energy Modelling

Daylight Design

Visual and Thermal Comfort

Thermal Fracture

Thermal Performance

Passive House

Wind Studies

SENSE - BUILDING PHYSICS + SUSTAINABLE DESIGN SERVICES

Page 8: IGBC/BEX Presentation

Optical ThermalAesthetic

Structural Sealed

Page 9: IGBC/BEX Presentation

ETTV = 12(1 WWR) Uw + 3.4(WWR) Uf + 211(WWR) (CF) (SC)

ETTV : envelope thermal transfer value (W/m2 ) WWR : window-to-wall ratio (fenestration area / gross area of exterior wall) Uw : thermal transmittance of opaque wall (W/m2.K) Uf : thermal transmittance of fenestration (W/m2.K) CF : correction factor for solar heat gain through fenestration SC : shading coefficients of fenestration

Page 10: IGBC/BEX Presentation
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Page 13: IGBC/BEX Presentation

+ +Aluminium205 - 250 W/m K

Steel46 - 50 W/m K

Glass0.8 - 1 W/m K

Page 14: IGBC/BEX Presentation
Page 16: IGBC/BEX Presentation

Assumptions: 75% glazing, 0.25 Shading Coefficient, 1.9 W/m²K Vision U-value, 0.7 W/m²K Spandrel U-value

Page 17: IGBC/BEX Presentation
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UgAg + UgsAgs + UfAf + UedgeAedge

Usystem

Page 19: IGBC/BEX Presentation

TYPICAL SPANDREL DETAIL

Page 20: IGBC/BEX Presentation

TYPICAL VISION DETAIL

Page 21: IGBC/BEX Presentation

TRANSOM DETAIL

UF 15.7W/m²K UE 2.5 W/m²K

NFRC 100 Ext Summer Conditions:

. Air: 32.0 °C

. Direct solar: 783 W/m²

. Wind Speed: 2.75 m/s

NFRC 100 Int Summer Conditions:

. Air: 24.0 °C

Page 22: IGBC/BEX Presentation

TRANSOM DETAIL

UF 13.6 W/m²K UE 2.1W/m²K

Page 23: IGBC/BEX Presentation

VISION MULLION DETAIL

UF 16 W/m²K UE 2.5 W/m²K

Page 24: IGBC/BEX Presentation

MULLION SPAN DETAIL

UF 6.0 W/m²K UE 2.0 W/m²K

Page 25: IGBC/BEX Presentation

USG 0.7 W/m²K

UG 1.9 W/m²K

UF 6.0 W/m²K UE 2.0 W/m²K

UF 13.6 W/m²K UE 2.1 W/m²K

UF 16 W/m²K UE 2.5 W/m²K

UF 15.7 W/m²K UE 2.5 W/m²K

Page 26: IGBC/BEX Presentation

Edge LossesFrame LossesCentre Pane Losses

3.4 W/m²K

3.3 W/m²K

VISION (U1.9)

SPANDREL (U0.7)

Center System Center SystemGlass Spandrel

0

50

100

150

200

250

300

Heat

Tra

nsm

issio

n (k

Wh/

annu

m)

Page 27: IGBC/BEX Presentation

WITHOUT FRAMES INCLUDING FRAMES

Page 28: IGBC/BEX Presentation

• A high performance façade design is meaningless without inclusion of the frame

• Thermally improving your façade is not only a cold climate strategy

• Request further guidance from the BCA

• Access ETTV Façade Designer for free on the Inhabit Website

Page 29: IGBC/BEX Presentation

HIGH PERFORMANCE FACADES FOR THE TROPICS – THE NEXT DECADE

Level 3, Begonia 3001A – 3102

Page 30: IGBC/BEX Presentation

FAÇADE | ADVANCED STRUCTURES | BOUTIQUE FAÇADES & STRUCTURES | ESD | BUILDING PHYSICS | ACOUTICS | LIGHTING | ACCESS & MAINTENANCE | LOGISTICS