Vayujal (VJ-400 Lpd Unit)
Vayujal is a water harvesting technology that converts atmospheric humidity into drinking water.
Vayujal (VJ-400 Lpd Unit) is a 400-liter water harvesting and purifying device that extracts water from atmospheric humidity. It aims to solve the global water shortage problem by utilizing abundant water molecules in the air. The device is also known for atmospheric water generators (AWGs) and is commercially available. It was designed by Ramesh Kumar, Ankit Nagar, and Prof T Pradeep as a startup in IIT Madras, India. It uses an 8 stage water purification system before it reaches the consumer and meet the WHO drinking water standards.
This product is distributed by the manufacturer itself.
6,150 USD (450,000 INR) On interview with manufacturer 2020
Goal 6: Clean water and sanitation
Target users for this product include households, mainly located in water-scarce places and places with high humidity.
This product is manufactured and assembled in India.
Users can obtain the product/service by directly contacting the manufacturer.
The product has served more than 6,500 people with 12 projects as of 2020. Interview with Manufacturer
Source that the water is harvested from (e.g. fog, rain collection, etc.)
Rate of water collected, measured in liters per hour
Size of the collection mechanism (m3)
Energy required to operate this system (kWh or N/A)
Description of integrated water treatment
Integrated water storage, measured in liters
List of necessary environmental conditions for operation
Vayujal (VJ-400 Lpd Unit) is an air-water generator that produces 400 Liter of water a day by extracting water from atmospheric humidity. The patented technology utilizes nanotechnology like bio-mimetic to make evaporators and condensers. The working mechanism of the technology follow five simple steps;
- The air is filtered after fresh humid air is sucked in through a vent.
- Then water is collected in the stainless steel water tank after it is condensed on a bio-mimicked surface.
- Hot air is released back into the atmosphere after the water molecules are extracted.
- The collected water then goes through an eight-stage filtration process to meet the drinking water standards of the World Health Organization (WHO) & Bureau of Indian Standards (BIS).
- Lastly, in order to ensure the purity and pH levels stability, essential minerals are added which are then ideal for human consumption.
Some of the design specification for the device is as follow:
- Dimensions: (90 x 100 x 160)cm
- Net weight: 360 kg
- Power rating : 5 kW at 70 %RH and 30 0Celcius
- Refrigerant: R410A
- Power supply: 380 Vac, 3 Phase, 50 Hz
- Noise level (dB)< 65
- Air Purification: Al mesh supported HDPE fabric
Provided by the manufacturer.
The device was designed to provide pure drinking water by tapping abundantly available water molecules in the air.
No known safety hazards are related to this product.
A reliable power supply with 380 Vac, 3 Phase, 50 Hz is required to operate this product.
Nagar, A. and Pradeep, T., 2020, Clean Water through Nanotechnology: Needs, Gaps, and Fulfillment, ACS Nano.
Sarkar, D. et al., 2018, Patterned Nanobrush Nature Mimics with Unprecedented Water‐Harvesting Efficiency, Advanced Materials Interfaces, 5(19), p.1800667.
Faqih, A.R.A.K.M., Fakieh Res and Dev, 2003, Production of potable water and freshwater needs for human, animal and plants from hot and humid air, U.S. Patent 6,574,979.
Spletzer, B.L., 2001, Method and apparatus for extracting water from air, U.S. Patent 6,230,503.
The product complies with the Bureau of Indian Standards(BIS) – ISO 2012 and WHO drinking water guideline standards.
The product is evaluated for a number of water quality parameters in certified third-party laboratories.
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