While interning with engineers, the author was tasked with researching a cheap and efficient air cooler alternative, and developed an evaporative cooler made from recycled oil canisters that reduced temperatures by over 15 degrees Celsius, which small vendors and construction workers embraced for its affordability. They sold over 150 units for $30 each, calling it "Sab Ka AC" or the common man's air conditioner.

1. While Interning with a group of young & enterprising
engineers , i was made responsible for the research of a
cheap yet efficient alternative for an air cooler. Something
which could be easy to use, portable, price and energy
efficient and effective.
After a lot of research and brain storming sessions we soon
had an evaporative air cooler made from junked oil
canisters. It worked very well reducing temperature to
about 25 degrees Celsius when the outside temperature
was 40 to 45 degrees . The small vendors and shop keepers
loved it and it was a boon for the construction site workers
We soon sold about 150 of those for as less as $30 each
We called it “Sab Ka AC “ ( The common man’s AC)

2. Canister,foam,fan wires..thats all

5. The final product

6. On construction sites… increased efficiency… better work place

7. Working
towards a
better world
…….