◆   Advanced Prototyping Stage — Bengaluru, India   ◆
Climate Engineering from India, for India

Cooling &
Water from
Thin Air.

Two breakthrough systems that harness atmospheric physics to cool your space and harvest drinking water — using a fraction of the energy of conventional approaches. No refrigerants. No mains water. Designed for Indian conditions.

No Refrigerant Self-Watering AC Solar-Powered AWH Bengaluru R&D ~110–215W Total Draw
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H₂O SOLAR COOLING AIR DB
Bengaluru 10.5 L/day Jaipur 9.6 L/day AWH Membrane AC ~110–215W Chennai 10.6 L/day Mumbai 10.2 L/day COP 10–15× Delhi 9.4 L/day No Refrigerant Zero GWP Hyderabad 9.9 L/day Bengaluru 10.5 L/day Jaipur 9.6 L/day AWH Membrane AC ~110–215W Chennai 10.6 L/day Mumbai 10.2 L/day COP 10–15× Delhi 9.4 L/day No Refrigerant Zero GWP Hyderabad 9.9 L/day
Our Products

Two systems.
One mission.

01
Prototyping
❄️
Membrane Self-Watering
Air Conditioner
Vacuum-assisted membrane + indirect evaporative cooling

A radical reimagining of air conditioning that first strips moisture from outdoor air using a hydrophilic membrane under near-vacuum, then uses that dryness to deliver powerful evaporative cooling. No compressor. No refrigerant. The membrane harvests more water than the system consumes — your sump fills itself.

~215W
Total draw (1T)
10–15×
Equiv. COP
19–23°C
Supply air temp
15–27L/hr
Water surplus
02
Prototyping
💧
AWH Monolith
Panel System
Solar desiccant atmospheric water harvesting

A standalone solar panel that harvests drinking water from ambient air — no grid, no pipes, no waste. A SG/LiCl composite desiccant adsorbs moisture overnight; evacuated tube solar collectors regenerate it during the day, condensing pure distilled-quality water. Single-axis tracking, Peltier cold trap, and Pi Zero W control for maximum yield.

8–12L/day
Ann. avg (2m²)
<10μS/cm
Water quality
₹75k–
95k
Build cost (2m²)
18–36mo
Payback vs bottled
The Science

How it works

❄️ Membrane AC
1
Outdoor humid air enters the top channel of the membrane module. A near-vacuum (4 mbar) is held on the underside by a small 42W pump.
2
Water molecules dissolve into the hydrophilic polymer membrane and diffuse to the vacuum side — a process called solution-diffusion. N₂ and O₂ cannot pass.
3
Dry air (50–60% RH) exits the membrane module and passes over water-soaked cellulose pads in the Indirect Evaporative Cooler, dropping 10–15°C.
4
Condensate from the vacuum trap drains into the IEC sump. The membrane extracts 18–32 L/hr — far more than the IEC consumes — so the sump overflows into a 100L collection drum.
5
A Raspberry Pi Zero monitors DHT22 sensors and controls all components via relay. Optional 16×2 LCD for live readout.
💧 AWH Monolith
1
Night — Absorb: Fans draw ambient air through SG/LiCl composite desiccant trays. The composite (4.6× uptake vs pure silica gel at 30% RH) adsorbs moisture until sensors detect saturation.
2
Dawn — Seal: Flap valves close, isolating the desiccant chamber. A smooth 2-minute fan ramp-down prevents pressure shock.
3
Day — Regenerate: ETC+CPC solar collectors heat the bed to 65–90°C via copper thermosyphon pipes. Steam is driven out and condensed in two stages — passive aluminium fins (95% load) then a Peltier cold trap (5%).
4
Heat recovery: The Peltier hot side (168W) feeds back into the desiccant bed, cutting net thermal load. The system self-tracks the sun via BH1750 dual sensors and a linear actuator for +30% daily yield.
5
Pure water drains into a sealed collection vessel. Distilled quality (<10 μS/cm). Add optional UV lamp + mineral cartridge for potable use.
Technical Specifications

By the numbers

3.5kW
Cooling Capacity (1T)
~215W
Total Electrical Draw (1T)
10–15
Equivalent COP
19–23°C
Supply Air Temperature
1.2m²
Active Membrane Area (1T)
18–32L/hr
Water Extracted (1T)
4mbar
Vacuum Pressure
42W
Vacuum Pump Draw (VN-C4)
5L
Initial Sump Fill (startup only)
8–12L/day
Annual Avg Yield (2m²)
14–17L/day
Peak Month Yield
0.47kWh/L
Specific Energy (optimised)
<10μS/cm
Water Conductivity
262Wp
Net PV Power (2m²)
3–4days
Battery Autonomy
30kg
SG/LiCl Desiccant (2m²)
5–10yr
Desiccant Service Life
+30%
Yield Gain from Tracking
Our Approach

Why Dynamo Bangalore

🌡️
Built for Indian Conditions
Every design decision — membrane spec, desiccant loading, condenser sizing — is derived from real IMD climate data for Bengaluru, Chennai, Mumbai, Delhi, Hyderabad, and Jaipur. Not generic, not imported assumptions.
⚡
Radical Energy Efficiency
The Membrane AC draws 215W to cool a room a conventional 1-ton AC would need 900–1,200W for. COP of 10–15×. The AWH system runs entirely on its own co-located PV array with surplus energy to spare.
🌿
Zero Refrigerant, Zero Mains Water
No R-32. No R-410A. No refrigerant at all. The AC cools by physics, not chemistry. The AWH panel needs no plumbing connection. Both systems reduce burden on stressed urban infrastructure.
🔬
First-Principles Engineering
Every equation is derived from fundamentals — Hottel-Whillier-Bliss, Ergun, Nusselt, Kutateladze, GAB isotherms. We show our working. We know why every number is what it is.
🤝
Open to Partnership
We are in advanced prototyping and actively seeking manufacturing partners, impact investors, and pilot installation partners. We want to bring these systems to Indian homes, not keep them in a lab.
📍
Made in Bengaluru
PVC fabrication, Dorsan membranes, local HVAC suppliers, Amazon.in components. Supply chains that work in India. A bill of materials denominated in rupees. Built to be manufactured here in Bengaluru.
Get Involved

Interested in a pilot,
partnership or investment?

Both products are in advanced prototyping stage. We're looking for pilot installation partners, manufacturing collaborators, and mission-aligned investors to take these from prototype to product.

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