Green Screen

Green Screen is a passive air cooling panel for the slums of Delhi, India that is made entirely from agricultural waste.

Long description

Green Screen is a passive air cooling panel for the slums of Delhi, India that is made entirely from agricultural waste. Priced at 1% the cost of a conventional air conditioner, Green Screen is an affordable product that not only cools people, but also solves a component of why it is so hot in the first place. Usually, agricultural waste is burned off by farmers to quickly clear fields. But burning this waste significantly contributes to pollution levels in New Delhi where over 22 million people are exposed to the worst air quality in the world. Green Screen will cool homes of some of the megacity’s most marginalized residents by up to 6 degrees Fahrenheit through air compression and evaporative cooling.

Green Screen uses two tried-and-true passive cooling strategies and designs them into one product:
Cooling through compression. The geometry of the screens allows hot air passing through to be compressed into cooler wind.
Cooling through evaporation. When watered, moss growing on Green Screen draws heat as it vaporizes to cool the area.

The product hinges onto gaps and openings of incomplete homes. It can be opened and closed for ventilation, views outside, privacy, and security. Green Screen has been technically evaluated by engineers at NASA, presented at the United Nations, and has support from the Harvard Innovation Labs.