Post on 20-Jan-2017
SARDAR PATEL INSTITUTE OF
TECHNOLOGY AND MANAGEMENT
PREPARED BY-PRIYA GAVSHINDEB.E.- 4th YEAR (ECE)
MANDLESHWAR
TOPIC- Atmospheric water generator
“Welcome to the revolutionary technology
Atmospheric Water Generator”
Introduction Working Principle Techniques used in AWG 1)Cooling condensation type AWG 2)Desiccant-based AWG Advantages of AWG Disadvantages of AWG Applications Future Scope Conclusion Reference
Contents
James J Reidy discovered the concept behind the technology 20 years ago.
In 1998 research and development began and in 2002 Air to Water Technology was integrated.
Atmospheric water generator (AWG) is a electricity-powered device that uses the dehumidification principle to make pure drinking water out of the moisture present in the air.
From centuries, many people worldwide devised different methods to produce drinking water.
Many forget the fact that sufficient water is readily available in the air due to atmospheric water cycle that can be tapped easily.
INTRODUCTION
1
As the working principle of AWG is based on the Dehumidifier to extract water from moist air.
A dehumidifier sucks in air from one end, takes the moisture out of it, and then blows it back out again. The moisture drips through into a collection tank.
Similarly, water vapor in the air is condensed by cooling the air below its dew point, exposing the air to desiccants, or pressurizing the air in AWG.
2
Working Principle
Techniques used in AWG
3
Primary Techniques Used in AWG
Cooling CondensationAWG
Desiccant-BasedAWG
In this type, a compressor circulates refrigerant through a condenser and then surrounding air is cooled by an evaporator coil.
A controlled-speed fan pushes filtered air over the coil.
This lowers the air temperature to its dew point, causing water to condense.
The resulting water is then passed into a holding tank with purification and filtration system to keep the water pure.
It reduces the risk posed by viruses and bacteria which may be collected from the ambient air on the evaporator coil by the condensing water.
•1)Cooling Condensation type AWG
4
5
Block Diagram For Basic process
Collection Tank
Generated Water
CondenserAir Filtration
Air
Water Filtration
6
The ambient temperature Humidity
The volume of air
passing over the coil
Size of compressor to cool the
coil
7
The rate of water generation depends on
This method uses a solution of chemical salts to pull water out of the air. Salt is a natural desiccant, which means that it draws and holds moisture.
The technology may use liquid or solid desiccants to pull water from the air (like Lithium bromide, Silica gel).
In desiccant based water generators, humid air passes over a salt mixture. The wet salt is then heated to the boiling point. The steam is condensed and routed to filters for processing.
The resulting water is clean and free of chemicals. This is mostly applied in large-scale levels like the military or industrial units.
• 2) Desiccant-based AWG
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9
Clean and pure can be obtained due to processes of multi filtration.
Eliminates hazards caused by viruses, bacteria, pesticides and heavy metal contaminants.
Rich oxygen contained in the water improves metabolism of your body.
Tastes sweeter and better.
Once connected to the power supply, it can supply hot & cold
Advantages of AWG
10
The product price of an AWG is higher compared to municipal.
AWGs face a challenge with sandy areas such as deserts
Climate is an important factor for AWG machines to run efficiently.
Disadvantages of AWG
11
Water crisis solution
Where water is polluted
Farming
Military
Residential and offices
Pure water production in industries
Applications
12
Air Drop Irrigation
13
A BAMBOO TOWER THAT PRODUCES WATER FROM AIR
14
Self-filling water bottle harvests clean drinking water from the air.
Today’s steel pipes will soon be replaced with tomorrow’s air pipes where there is shortage of water.
15
Future Scope
Despite widespread water pollution and shortages of drinking water, there is an abundance of water around us – from the air that we breathe it doesn’t matter where you are – even in the desert.
Several water treatment methods exist to tap these sources, from traditional methods to modern techniques .
Water harvesting and treatment technologies that are solar or wind powered is the most environmentally friendly way to extract pure quality water from the air or sea at a low cost.
The excellent information is that these technologies are now commercially available.
Conclusion
16
“SAVE OUR NATURAL RESOURCES,
SAVE OUR LIFE ” AS NO ONE CAN SURVIVE WITHOUT THE NATURAL RESOURCES
THANK YOU
ANY
QUESTION ?......