Ecobuild 2014: Lighting and energy management

Daylighting and Energy

Optimization with

Automated Blinds

The

idea

Why the limited

application

of

Automated Roller blinds

Fear-factor

The majority of automated rolleror

venetion blind control systems installed

in the UK do not work or have been

switched off!

The Challenge

The illuminance of

direct unobstructed

sunlight

is approximately

100,000 lux

The Goals• Thermal

Comfort

• Visual Comfort

• View to

exterior

Heat & Glare

There can be no sustainability without

energy savings, there can be no energy

savings without a daylighting strategy, there

can be no well informed daylighting strategy

without an automated shading system.

Dimmable

Lighting

HVAC

Savings

Blind

Automation

The Symbiotic Relationship

“The overall intent is to keep the blinds

up as much of the time as possible

without causing thermal or visual

discomfort”

Maintaining Visual Comfortby managing

Contrast Ratios

Without Automation

“Automated” systems are rendered useless

if local climatic conditions are not considered

Manual blinds tend to act like

a broken watch

Only effective once a day!

Manual Blinds:

• Non-uniform façade

• Loss of energy saving opportunity

Reactive vs. Predictive

Daylight Measuring

(Sun Tracking)

photocell

Visible

Light

Solar Evaluation™

photocell

Radiometer

Visible

Light

Need a automated blind control

system

that can be

Measured and Verified

Energy Saving Potential:

Automated Blind Controlworking with

Automated Lighting Control

Integrated or

Interacting?

. . . allowing dimmable lighting to

supplement the optimized daylight condition.

The two systems interact though daylight

Manage the Quality and Quantity of

natural light entering a building

Enhance the opportunity to dim the

lighting system and save energy

Thank you

Ecobuild 2014: Lighting and energy management

Design

Transcript of Ecobuild 2014: Lighting and energy management