The Micro Solar Dome (MSD) is a day and night lighting single device unique in its features, that has a transparent semi-spherical upper dome made of acrylic material which captures the sunlight and the light passes through a sun-tube having a thin layer of highly reflective coating on the inner wall of the passage. It also contains a lower dome made of acrylic. There is a shutter in the bottom of the lower dome which can be closed, if light is not required in the daytime. It is leak proof and works throughout the day and 4 hours continuously after sunset.
The device, developed under the aegis of the Department of Science & Technology, can help 10 million households and has the potential to save an estimated 1,750 million units of energy. It would also lead to emission reduction of carbon dioxide of about 12.5 million tonnes. The dome is installed on the roof of a tenement and captures sunlight through a transparent semi-spherical upper dome and concentrates it inside a dark room. The light passes through a sun-tube having a thin layer of highly reflective coating on the inner wall of the passage. Only the coating is imported, he said, adding that the dome is leak-proof and works for almost 16 hours daily, that is, throughout the day and four hours after sunset.
- PV Module O/P Power:3 W*2
- PV Module O/P Voltage:6 Volts (Voc )
- PV Module Rated Current:700 mA
- Battery Type:Li-Io
- Battery Capacity:2 X 3500 mAh
- Battery Voltage: 3.7 Volts
- Luminary Type:3W LED
- Circuit used:Electronic Driver Circuit
Daytime (hrs) Night Time (hrs) Total (hrs) Summer 12 5 17 (minimum) Winter 8 5 13(minimum)