Low-Cost, Energy-Efficient Air Conditioners for Extreme Heat in Developing Countries

Team: Sally Benson, Manu Prakash, Sanjiva Lele, Ilenia Battiato, Steven Chu, Adam Boies, Rishee Jain

In tropical climates with high relative humidity, up to 70 percent of the energy consumed by conventional air-conditioning systems is dedicated to dehumidification. This inefficiency leads to substantially higher electricity consumption and consequently, emissions. There is an urgent need for affordable, low-carbon, and energy-efficient air-conditioning solutions, particularly in India, where AC demand is projected to grow sixfold in 15 years. Current technologies are inefficient and unaffordable for most, with only 8 percent of households having access despite extreme heat waves. This project will develop a desiccant-based air-conditioning solution with significantly improved energy efficiency and affordability for the lower and middle classes that will enhance the adaptive capacity of communities facing extremely high wet-bulb temperatures in India and other countries in Asia.