Casestudy: "Light from Light" - off-grid solar system with BIPV panels
In April 2010 our partner company Kisun Solar was approached by the Australian organization Multimedia Art Asia Pacific (MAAP) to consult on the manufacturing of customized solar panels and an off-grid solar system for their art project called "Light from Light."
"Light from Light explores the properties and metaphors of light, and the notion of the library as a site of enlightenment. In this exhibition, artists treat light as a medium, an energy source and a metaphor for illumination and knowledge. A major outdoor photovoltaic geodesic dome brings function into a luminous sculptural form that references various histories in art and architecture."
The creative brains behind the photovoltaic dome are the artists. Their cooperation has led to this interesting artwork, for which the exhibitions were taking place simultaneously in Australia and China.
For the construction of the outdoor photovoltaic geodesic dome, Kisun Solar manufactured customized Building Integrated Photovoltaic (BIPV) panels.
The BIPV panels were fully customized according to the requirements of the project. The solar panels were made of two layers of tempered glass. In between, Kisun Solar chose PVB as an inner layer, due to the good performance in warm weather and to fully seal the PV panel. Mono solar cells were used, with a total of 44watts power output for each BIPV panel. Each dome consisted of 20 BIPV panels.
The BIPV panels demonstrate how solar cells can be part of the building components of a structure, instead of being installed as conventional PV panels on a roof. The BIPV panels can be designed in different sizes, in full compliance with the glass standards of any country. The BIPV panels used are suitable for facades and curtain walls. Many aspects of the BIPV panels can be customized, including the % of sunlight passing through (transparency), the output of the panel, which varies from 80Wp - 120Wp per m² and the actual size.
The geodesic dome is self powered, and therefore needed a solid off-grid system to support all lighting. The off-grid system for the photovoltaic dome in Shanghai is operating on 36V, and has been designed to power the signage lighting (12V, 80W) and two LED flood light (36V, 20W), that are lighting up the dome. The weather conditions in Shanghai have been taken into account.
For the batteries we used three sealed 12V, 200amp batteries. Around 20% of the battery capacity will always remain charged, in order to prolong the life cycle of the batteries.
With the use of a timer, the lights were turned on automatically every day at 5pm and the lighting system shut down at 9pm, lighting up the dome in the evening during the opening hours of the Shanghai Library.
Photovoltaic dome at State Library of Queensland, Australia
The first dome was built at the State Library of Queensland in Australia.
Photovoltaic dome at Shanghai Library, China
The second dome was built at the Shanghai Library in China. Both exhibitions hosted a photovoltaic dome.
Solar PV module quality inspections
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