INTEGRATED HYBRID DAY
LIGHTING SYSTEMS:
The integration of artificial lighting with daylighting will provide a hybrid lighting solution that is more effective than conventional systems.
Overview
Many technologies have been evolved in the past few years to
improve energy efficiency in lighting as it constitutes 25-30% of total energy
consumption in a building. These technologies can be broadly classified as
Ø Implementation of smart lighting controls
Ø Utilization of maximum daylighting
A considerable amount of lighting energy
has been saved with the implementation of the above mentioned technologies, but
still there exists a potential to fine-tune the energy consumption through
optimum integration of these technologies. ”Integrated Hybrid Daylighting
System” is the concept originated from the above idea wherein the system works on
a central theme of daylight and controlling artificial lighting installed in
the same unit according to it.
Components
Ø Daylighting System
- Sunlight capture System
- Optical Reflective System
- High-Performance Light Diffuser
Ø Lighting
Automation Control
- Daylight Sensor
- Lighting controller
- Central control panel & EMS
Ø Electrical
lighting
- High bay LED Lamps
Working
During the day, the double glazed Light Collector
receives sunlight over a large surface area and distributes light into the optical reflective system placed below it. This is built from highly reflective
surfaces assembled in an Aluminium fixing system which guides the intercepted
light to diffuser further below.
The high-performance diffuser then spreads the
daylight evenly without any glare or heat into the workspace. The system’s
daylight sensor continuously monitors the ambient sunlight. The electric lamps
are divided into three groups each representing a step for switching on/off. If
the daylight on task level is less than desired light intensity, called the setpoint, the controller switches on the required number of steps in electric
lighting to achieve the setpoint, compensating the reduction of daylight. This
compensation is achieved in three steps from electric lighting completely off
to fully on mode or vice versa. With the option of advanced LED luminaire, this
compensation is more efficient and smooth.
Thus, the necessary light for any given space always
remains constant, despite changes in weather conditions or transition from day
tonight.
A single control panel connected to many systems helps in monitoring the energy consumption and savings of lighting systems. Also, this has the ability to manually override systems, monitoring failures, and data input.
A single control panel connected to many systems helps in monitoring the energy consumption and savings of lighting systems. Also, this has the ability to manually override systems, monitoring failures, and data input.
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