Fighting the Delhi Heatwave: Using 18th-century physics to cool down my AC’s hot exhaust. (Jugaad)
Hey everyone,
Like all of you, I’m currently roasting in this Delhi heat. While sitting on my balcony, I realized how much of a "Heat Island" we create. My AC keeps me cool inside, but it’s basically a flamethrower for anyone standing outside or for my neighbor's balcony.
Since my exams end on June 13th, I’ve decided to build a prototype to fix this. Here’s the "jugaad" plan I’m working on:
I'm designing a Hexagonal Clay Grill (think of a terracotta honeycomb) to be placed about 1–1.5 feet in front of the outdoor unit.
You may ask how it works:
Evaporative Cooling: we could redirect the AC condensation pipe (the waste water) so it drips onto the clay grill, keeping it constantly wet.
The Physics: As the 50°C exhaust air blasts through the wet clay, the water evaporates, stripping the heat from the air.
The Venturi Effect: I’m planning to use tapered hexagonal holes (wider at the back, narrower at the front) to speed up the airflow and shoot the air further away from the building.
Why I think this is viable for Delhi:
It uses the "waste" water the AC is already throwing out.
The 1.5-foot gap ensures there’s no "backpressure" so the compressor won't overheat or blow a fuse.
It's basically a modern version of the Jaalis and Phool-pats used in old Mughal architecture, but powered by AC exhaust.
If we could turn that 50°C "blast of fire" into even a 35-40°C breeze.
If this works, I’ll post the temperature readings and a DIY guide so more people can do it.
I’d love to hear from any engineers or DIY enthusiasts here:
-> Will terracotta hold up to the constant vibration?
-> Should I go for a specific hexagonal size for better airflow?
-> Any tips to keep it dust proof without human intervention.
Let’s try to make our streets a little less like an oven!
Peace out .