Helpful for Façade Engineers & Civil Engineers

1. Structural Glazing System- Electrochromic (“Smart
Glass”) Facade
(Commercial & Residential Buildings)
S.Sudha Velan B.E (Civil)

2. Electrochromic glass
• Electrochromic glass (smart glass or dynamic glass) is an
electronically tintable glass used for windows, skylights, facades
and curtain walls.
• Electrochromic glass, which can be directly controlled by building
occupants, is popular for its ability to improve occupant comfort,
maximize access to daylight and outdoor views, reduce energy
costs and provide architects with more design freedom.

6. SMART GLASS CONTROL SYSTEM
• AUTOMATION & INTEGRATION
• All Smart Glass products can be tinted and cleared using automatic
settings or seamless integration with the existing building
management system.
•
MOBILE PHONE CONTROLS
• In addition to traditional wall switches, you can use mobile app to
fine-tune tint zones and save predefined scene settings for specific
lighting effects from anywhere in the building—wherever and
whenever you want.
• VOICE CONTROL
• Integration with voice control devices, like the Amazon Echo,
provides occupants with additional flexibility so they can control the
dynamic tinting of the glass via voice command.

8. Smart Glass Benefits
• Smart Glass helps building owners achieve their sustainability goals
through energy conservation. By maximizing solar energy and
minimizing heat and glare
• Smart Glass allows building owners to achieve cost savings over the
building’s life cycle by reducing overall energy loads by an average of
20 percent and peak energy demand by up to 26 percent.
• Architects are also given the freedom to design without the need for
blinds and other shading devices that clutter the exterior of the
building.

10. Smart Glass Drawbacks
• It's a given that glass printed with electrodes and fancy metal
coatings is going to be several times more expensive to install than
ordinary glass:
• There are also questions about how durable the materials are, with
current windows degrading in performance after only 10–20 years
• Another drawback of current windows is the time they take to
change from clear to opaque and back again.

12. How Does Electrochromic Glazing Work
• Smart Glass electrochromic coating consists of five layers that are
less than a 50th of the thickness of a single human hair.
• The tint of electrochromic glass is controlled by the amount of
voltage applied to the glass.
• Applying a low voltage of electricity darkens the coating as lithium
ions and electrons transfer from one electrochromic layer to
another.
• Removing voltage, and reversing its polarity, causes the ions and
electrons to return to their original layers, causing the glass to
lighten and return to its clear state.

17. Electrical Power Requirement
• Typical power supply 100-240VAC (50/60Hrz)
• Power per unit area in W/Sqm- Peak: 2.5 Watts ,Average: 0.4
Watts
• The electro chromic glazing only uses this power supply to
transition, once the state of glass has changed the power
supply is cut off.

20. Apply a voltage to the outer contacts (conductors) and lithium ions
(shown here as blue circles) move from the innermost electrode to the
outermost one. The window reflects more light and transmits less,
causing it to appear opaque (dark).

21. SMART GLASS – TINTED STATE

22. • Electrochromic glass
changes color under
electric control:
• Left: Here it's
transparent and looks
much like ordinary
glass;
• Right: Apply a small
voltage and it turns
opaque (blueish and
dark).

29. Thanks & Regards
S.Sudha Velan