Solar Daylighting | Daylighting Systems:Bangalore | Lavancha

Daylighting Harvesting

daylighting solar-bangalore

Solar Daylighting refers to the thought of virtually transporting the sunlight into the four walled buildings. These are possible with the engineering ingenuity of using advanced light trapping and enhancement systems.

Solar Daylight Harvesting has become a buzzword in the energy efficiency world. In simple terms, it means using daylight to cut the level of artificial light that’s needed to illuminate an Industry / Manufacturing Units , Warehouses, offices ,Retail stores, Car Showrooms or any other workplace.The most efficient daylight harvesting systems are automated, and always check the level of the natural light present in an environment at any one time

It is a very cost-effective, energy efficient way to bring benefits of natural light into any commercial establishment or any residential premises and drastically reduce the need to consume electricity generated by the main grid for lighting purposes.

At a time of escalating costs in power generation through thermal energy due to ever rising costs and non-availability of coal, Solar Light Harvesting could provide much relief to a country like India by providing daylight in an unbelievably economical way.


How the system works?

There is the Light Collector on the rooftop which is a Polycarbonate dome consisting of two deflection panels sloping against each other. It is arranged to collect maximum sunlight during morning and evening times avoiding heat. The silver metal oxide used to coat the inside of the pipe reflects and re-reflects the light, till the light travels down the pipe and hits the Light Diffuser which controls the brightness based on the lighting requirement.

The major components of the system include:

  • Day lighting system – (a) Sunlight collector (b) light well (c) light diffuser
  • Lighting control system- (a) Daylight sensor (b) Lighting controller (c) Central Control Panel
  • Electrical lighting fixtures

A roof mounted system works with daylight sensors measuring the ambient sunlight directly above the roof and giving feedback to the lighting controller that switches on required number of T5 or LED electric lamps to compensate for the reduction of daylight at task level.

The central control panel measures the energy consumption in real time conditions to gauge the energy efficiency of the system.

The 2 types of daylighting solutions available are:

  • Pipe based solutions
    • Ceiling Mounting – For maximum sunlight collection
    • Wall mounted systems –alternative with horizontal setup
  • Fiber Optic based solutions – provides more flexibility on light bends.

Advantages Of Daylighting

  • Human performance is improved under daylight
  • Delivers abudant, high-quality lighting that many activities require
  • Colors are rendered accurately
  • Natural light improves morale and productivity
  • Lower risks of accidents and errors
  • Natural Ventilation is facilitated
  • Reduced operation and maintenance costs
  • Demand saving during daytime peaks

Benefits of Solar Skylight Devices [ Day lighting ] :

  1.  Since this product does not use electricity from the main grid which is generated mostly through fossil fuels at a considerable cost, Solar Skylight contributes positively to the economy and to the promotion of a greener environment.
  2.  As proven elsewhere in the world, Solar Skylight is of great benefit to cut down costs in manufacturing plants, commercial establishments, warehouses, sports complexes and other buildings occupying large floor areas which consume much electricity to light up their vast interior spaces.
  3. Non-consumption of electricity by using tubular daylighting devices such as Solar Skylight, enable substantial savings to be made in the costs of products that are manufactured in India and make them competitive in the domestic and foreign markets.
  4.  Because Solar Skylight Day lighting Devices do not add to the heat gain in the building, there are considerable savings in electricity cost towards Air-conditioning. In some cases this saving is up to 10-12%.
  5. Humans have biologically evolved according to daylight cycles, with human body functions affected by patterns of light & dark. Studies show that productivity is enhanced in natural light and improved by 20-25%.
  6.  Daylight connects people with the natural environment outside and studies show that workers feel happier and less fatigued while working in natural daylight.
  7. Good sunlight is the major source of vital Vitamins. People working for long hours in closed environments suffer from lack of these Vitamins. Use of Solar Skylight Day lighting Devices to bring natural light into such places will be beneficial to health and well being of the occupants.
  8.  Studies show that patients are apt to recover faster and to better handle the stress of being ill in environments with plenty of natural light.

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