Solar Bottle Bulb

Courtesy: Isang Litrong Liwanag

MyShelter Foundation was established by Illac Diaz to create a system of sustainability and reliability through its capability-building and employment-generating projects. Introducing groundbreaking social enterprise, appropriate technologies, and alternative construction in the Philippines, we have pioneered projects such as the Pier One Seafarer’s Dormitory, the Design Against the Elements (DAtE) competition, and the Bottle School Project.

Isang Litrong Liwanag (A Liter of Light), is a sustainable lighting project which aims to bring the eco-friendly Solar Bottle Bulb to disprivileged communities nationwide. Designed and developed by students from the Massachusetts Institute of Technology (MIT), the Solar Bottle Bulb is based on the principles of Appropriate Technologies – a concept that provides simple and easily replicable technologies that address basic needs in developing communities.

How It Works

The light can be built and installed in under an hour.

First, a hole is cut in a corrugated iron sheet, and a one-liter plastic bottle that has been filled with water and about four teaspoons of bleach is inserted. A hole is cut in the house’s roof, the bottle is put in, and then the iron sheet is fixed to the roof with rivets and sealant.

“Unlike a hole in which the light will travel in a straight line, the water will refract it to go vertical, horizontal, 360 degrees of 55 watts to 60 watts of clear light, almost ten months of the year,” Diaz said.

The bottles emit clear light for about five years, since the bleach inside prevents the buildup of algae in the water.

Watch a sample in YouTube.

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