Condense Potable Water from Air
Office Cooler
Water from air
Office Cooler�Water from air
Desk Top Version Four gallons daily
Commercial version
..
Two U.S. commercial office water coolers that condense drinking �water from the air and sanitize water with ultraviolet light.
Australia – Units from 5 to 5,000 liters daily�http://mywatermicronworld.wordpress.com/2012/06/06/atmospheric-water-generator-australia-water-from-air/
U.S.A.
U.S.A.
Work in harmony with nature, create your own dew.�If a beetle can, a man can.
� We see water from condensation on a cold glass� and under a car using the air conditioner. Dew is � on the grass in summer and frost in winter.
Drought is affecting millions of lives worldwide,� but all air contains humidity. By lowering the air� temperature, moisture condenses. Condensed� moisture can be lifesaving, potable water.
Even Namibian Desert Beetles know that.�
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�If desert beetles can live off water in the air, why can’t mankind?
Australia–Units from 5 to 5,000 liters daily�http://mywatermicronworld.wordpress.com/2012/06/06/atmospheric-water-generator-australia-water-from-air�
Namibian Desert Beetle
Desert Beetles
Drought? Ask California – Tim Mann’s newsletter contained these pictures to remind us that aquaponics uses much less water than normal field agriculture. California has many “green” environmentalist forced laws to save the world by recycling. Of course, you must rinse out each empty container with a pint or quart of water. If that only adds up to wasting a gallon of water per person per week, California conservation wasted 1.72 billion gallons of precious water in 2013. But who needs that water? They reused a plastic bottle. Perhaps fanatics should stop a moment and rethink their priorities before continuing their tax paid Crusades.
Namibian Desert Water Beetles
To drink water, the Stenocara gracilipes stands on a small ridge of sand using its long, spindly legs. Facing into the breeze, with its body angled at 45°, the beetle catches fog droplets on its hardened wings. Its head faces upwind, and its stiff, bumpy outer wings are spread against the damp breeze. Minute water droplets (15-20 µm in diameter) from the fog gather on its wings; there the droplets stick to hydrophilic (water-loving) bumps, which are surrounded by waxy, hydrophobic troughs. Droplets flatten as they make contact with the hydrophilic surfaces, preventing them from being blown by wind and providing a surface for other droplets to attach. Accumulation continues until the combined droplet weight overcomes the water's electrostatic attraction to the bumps as well as any opposing force of the wind; in a 30 km/h breeze, such a droplet would stick to the wing until it grows to roughly 5 mm in diameter; at that point it will roll down the beetle's back to its mouthparts.
�� Dyson Award��Man-made dew for sub-surface irrigation won the 2011 Darwin Award. The �Airdrop irrigation concept is �a low-tech design that uses condensation to harvest �water from the air. Utilizing �a turbine intake system, air �is channeled underground through a copper coil to cool the air to soil temperature, creating 100% humidity (dew point) and condensing water. The condensed water is then collected and stored underground until it is pumped out via a sub-�surface drip irrigation hose system. The Airdrop design features an LCD screen displaying water levels, pressure strength, solar battery life, and system health.
GizMag
Drip irrigation system
�Form condensing coil with soft aluminum tubing. Small 12v auto air conditioner cools air being blown through the coil to condense water from the air pulled through the coil by blower fan.��Mount circular coil in a fixed mounting – the wind may be from any direction. Air pulled by blower fan can be piped to home or greenhouse – dry and cool.��Thermal cooling is less complicated (slide 6).
12 v. compressor
Wind-Solar electricity to power fans, and water pumps. Smaller HAWT system complements solar arrays. Cloudy days are often windy, but hot, sunny days lack steady breezes.
Horizontal Axis Wind Turbine (HAWT) for windy areas.
12v. Blower fan
Aluminum coil
Savonius Vertical Axix Wind Turbine (VAWT) for light wind.
�During day, wind and sun charge battery pack.
Battery pack
During night, battery pack powers �AC unit, pumps, and blower fan.
Bending condensing coil tubing – tips: http://www.youtube.com/watch?v=AbDMITAMLio&feature=em-subs_digest-vrecshttp://www.youtube.com/watch?v=AbDMITAMLio&feature=em-subs_digest-vrecs
The atmosphere contains humidity, lower in dry, cold areas, higher in humid, warm coastal areas, but all air contains humidity that will condense when the air is cooled below dew point.��Air passing over a cool surface will condense water. A glass holding a cool drink or water below a car with an air conditioner is condensation. Nature’s condensation is dew in summer and frost in winter. ��Use an air condition unit to cool air to pass through �a condensing tube to collect water from air. The length of the condensing tube will determine the amount of water obtained. For pure drinking water – add UV light and filters.
Hole�6” pipe diameter
2” pipe coolant (H2O)
10-12 feet
Cuts in bottom �2 feet of�6” pipe
Thermal Cooling to Condense �Water from Air �From 6-12 feet (2-3.3 meters) below ground level, the temperature is relatively stable year round. �Sink a six inch PVC pipe (A) 12 feet (3.66 meters) to create a shallow well for inserting the coolant pipe. Lower a two inch aluminum pipe with return (B) to the bottom of the six inch pipe. Pump the cooled water in coil to the aluminum coil (C). A fixed coil can condense moisture regardless of wind direction aided by small fan pulling the �humid, ambient air through the coil.
Electric power required for: � Water pump to circulate coolant from � ground hole to coil.� Small, slow 12 volt DC fan (e.g., computer� fan to draw air through coolant coil and � into home or greenhouse.
Power Source: � Grid and/or Wind Turbine (Propeller for � high wind or Savonius for low wind)
Aluminum coil to condense moisture in air by cooling air below dew point.
Sealed pipe containing coolant
B
C
A
13.5”
2 “ Centers
Coil Plastic Spacing Strips (4)
Cut off top to attach condensing coil.
2.5”
Cut four plastic coil spacing strips.
Hole and fan to pull humid air through �coil and send cooled, dry air to home �or greenhouse
Hole for ball valve and water drain pipe
Condensing Water From The Air �Bore a twelve foot hole, six inches in diameter. If no natural water (polluted surface water), you may drill deeper or more holes. Plan to submerge an aluminum 2 inch, U shaped pipe �to circulate water or anti-freeze coolant at 12 feet depth where the earth maintains a stable temperature year round. This circulating coolant eliminates extreme summer-winter water temperatures in fish tanks, sump tanks, and holding tanks.
Two holes for coil connections
1”
Aluminum Condensing Coil �(No copper; it kills beneficial bacteria.)
Wrap one inch 6061 aluminum tubing�around a cylinder to form condensing coil to cool air to dew point.��To bend pipe: www.youtube.com/watch?v=AbDMITAMLio&feature=em-subs_digest-vrecshttp
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Line to cut strip to mount coil�
Test over size holes and a rubber grommet for each hole of Spacing Strips.
Coil placement
World Humidity Maps http://www.intellicast.com/Global/Humidity.aspx?location=default
Thermally cooled liquid flow
Ground water ± 12 feet below ground level
Dry Air Exhaust
Condensed water
Multiple six inch x 12 feet PVC pipe holes drilled for thermal cooling reservoir.�Fill lower, one to two feet of each six inch pipe with small rocks.
Aluminum tube for coolant to be pumped from below ground to aluminum coil and back down to cooling reservoir.
Cheap Thermal Cooling System
Center six inch pipe will be used to drill two inch PVC well till water is reached to fill reservoir. If no water above 25 feet, plan to use normal ground thermal temperature from multiple holes. This can be ground water as it is for cooling, not for drinking.
Savonius vertical wind turbine (next slide) will provide electric power in light wind areas to pump coolant at night.
Water
Water storage
Heavy duty truck �or bus alternator
Belt Pulleys
Savonius Vertical Axis Wind Turbine for Electricity
Sandia Labs determined open space ‘e’ in center to be 10% – 15% of ‘D’ (Diameter) as most efficient space to push the next vane. (P)
Use three vanes, not two.
Wind
4 feet
2.5 ft
P
Three vanes for easier self-starting. Top and Bottom sealed with flat circle of plastic or metal. Light weight desired for easier levitation.
Three vanes made from 4’x10’ sheet aluminum or fiberglass. Each vane 4’ high x 3’ 4” wide.
Levitation rings of rare earth magnets.
Savonius for light wind areas
Propellers for high wind areas
BMS
Three Vane Wind Turbine
Off-The-Shelf Components
Bicycle Wheels: Cheap, good engineering, and common.
Sheet Aluminum: One sheet.
Truck alternator: Common
Batteries: Deep cycle rare; auto/truck common
Bicycle wheels to � support vanes
Battery Pack
Peltier Solid State Cooling to Cool Condensing Coil Liquid
CONCEPT, NOT TESTED
Investigate the possibility of using a 12 v. Peltier module to cool a liquid which in turn will cool the condensing coil liquid for removing water from air. This would permit portable cooling, as well as the battery pack and solar/Savonius Vertical Axis wind generator.
Compare larger heat sink to replace fan as unit will work in cool evening.�DIY Fridge: http://www.thesurvivalistblog.net/dirt-cheap-fridge/ (Use smaller cooler and large heat sink)��http://www.analogtechnologies.com/tec-module.htm?gclid=CLfunoDYl70CFe5aMgodPSIAhA
Peltier Module
Large Heat Sink,�No Fan.
DIY Fridge using cooler
Peltier Cooling of Condensing Coil
Hot �Side
Cold �Side
Peltier Unit
Peltier Unit cools liquid in portable, one gallon cooler containing a coil that connects to the condensing coil. The condensing liquid is cooled in the Peltier cooled liquid, then is pumped slowly through the condensing coil to cool ambient air below dew point, condensing potable water that collects in the lower part of the condensing barrel. The liquid in the condensing coil returns to the cooling unit to be cooled again, ad infinitum.
Cooled, dry air blown to house or greenhouse
Water storage
Condensing Barrel
Condensing Coil
Top of barrel holds condensing coil
One gallon cooler with Peltier module to cool water that cools a condensing coil.
Storing Potable Water
FDA - CFR – Code of Federal Regulations Title 21 - April 1, 2013: http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=177.1520
Storing Potable Water in Plastic containers (Thanks, Todd.):
�Plastics that are safe to store water must be food grade safe. On the outside of the containers, there should be a recycling symbol (triangle �of arrows), with a number between 1 and 7 in the triangle. Food grades �are 1, 2, 4, and 5. ��Although some bio-plastics are also food grade and marked with a 7, unless you know the container is meant for food do not trust it, as not �all number 7 stamps mean they are safe for food). The best food grade containers made of plastic are marked with a number 2, as this is High-density Polyethylene (HDPE) plastic. Others are PETE (#1), LDPE(#4), �and polypropylene (PP/#5).��[Note: Another source advised using PETE (#1) one and five gallon clear containers. Exposing clear PETE bottles containing water to direct sun (UV) for over six hours sanitizes the water.]
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