Hyderabad-based chemist creates over 50 designs that help in reducing smoke

More than 50 designs, painted in hues of blue and red that adorn the walls of a one-room museum located amid wilderness in Jangaon, were created for a single purpose – to efficiently burn.

The stoves of Sai Bhaskar N. Reddy, a city-based environmental chemist, are a result of years of travel, discovery experimentation with biomass and material to produce designs that are replicable, cheap and can improve fuel efficiency by reducing smoke.

“In 2005 at a village in Mahabubnagar, I found people cooking on three-stone stoves, but could send their children to convent schools and had dish connectivity. The biogas stoves subsidised by the government were not functional. I sought the government’s assistance to intervene, but nothing happened,” he said explaining his resolve to make biomass stoves. Dr. Reddy’s designs have been uploaded on the Internet for free use. Every design, he says, is an improvement over the previous one, to achieve improved burning of multiple types of biomass fuels. Though a large number of rural households now use LPG, a stove that burns biomass, often wood, is also used in rural homes, mainly for heating water.

The WHO estimates that nearly four million people are killed worldwide annually due to indoor pollution caused by inefficient combustion. Stoves at Dr. Reddy’s museum at Peddamadduru in Jangaon are made from low-cost aluminium boxes in which cooking oil is conventionally sold or cast iron. The gasifier variety of stoves is fitted with small fans used as exhaust in computers.

“This, I would say, is the most iconic design,” he says pointing to a stove that looks more like a traditional grill. “The 3G stove allows inflow of air at various levels during combustion. It also helps easy loading of biomass and allows for production of biochar.” Biochar, a charcoal produced from plant material, has found in use many applications, including those of environmental decontamination to agriculture. Dr. Reddy’s stoves have been used by the homeless in Mumbai, in the villages of Mahabubnagar and even possibly by refugees in Europe. “After October 2015, traffic from European nations, including Germany, to my website where I have uploaded designs has surged,” Dr. Reddy says adding that cooking apart, his stoves could also be used for heating.

A proponent of open source knowledge, Dr. Reddy says he does not monetise his designs. He believes that low-cost solutions made available online free of cost for other purposes like treating water, sanitation and makeshift houses could greatly help the poor, refugees and the homeless and help achieve the goals of development that govt.s have been striving to achieve.

source: http://www.thehindu.com / The Hindu / Home> News> Cities> Hyderabad / by Rohit P.S. / Hyderabad – May 13th, 2018