AWG Atmospheric Water Generator parts and assembly (WIP Updated 01-21-22))

thingiverse

AWG (Atmospheric Water Generators) have been around a long time. There are a couple of "home" size units available. But frankly I got tired of waiting on the suppliers to come back to me with proper pricing and lead times. So I build my own. Disclaimer: 1) I am not an engineer, therefore I am testing and checking each subsystem independently prior to finalizing the design. So it is a WIP 2) Have your finish product tested by a third party lab, should cost around ~$100~$125. Recommend to do this once per year. 3) I build this unit for the primary function of harvesting water to wash my vehicles, water the plants around the house. And for emergency use* 4) You can not tie in this water system with any municipality water system. That is 100% illegal and will get you in a lot of trouble. So don't do it (not that the design can as is). * The water will have a TDS of zero, therefore it is not recommended to consumer on a regular basis. Good for your car cooling system, not good for your gut. Therefore if you plan on consuming the generated water, beside having it tested (Title 21 Water Test). You would need to add an inline Remineralization cartridge (amazon). Process Flow: High efficiency water dehumidifier with a build in water pump is set at 60% humidity. And while the index is above 60, it will generate water (Amp test to be completed to provide a chart of humidity index vs amps soon). But the higher the humidity, the more efficient I would expect this unit to operate. This generated water is then passed through a 5 micron filter, large enough that a once per year replacement of the medium should be good. System is advertised as 6+ gallons per day. So far I've seen around 4~5 gallons at a 65~80% humidity index. After the filtration, a UV light with a flow sensor is used to turn ON/OFF when ever water is flowing through. This will "Sterilize" the water, and it must be installed AFTER the filter. Water is then pumped to the storage tank. There is a recirculation system, that comes ON 1 hour per day, to recirculate the water from the tank, through the filter and through the UV again. This is to continuously filter the water clean. This is automated using an Arduino and the details posted at a later date. The top of the tank was modified to accommodate a vent line, a drain line from the UV and a water suction line for the recirculation pump. I used a router to chop off the top of the black cap, and 3D printed the replacement drop in unit. (Tank Top Proto1 STL) Power supply holder STL 6.6 mm hose clamps STL and stand offs UV Lamp holder STL 01-21-22 Update Starting programming the Arduino, it will serve three purposes. 1) Measure the tank water level using the SR04 Sonar Sensor,. Therefore control the dehumidifier. Turn off if near full. Turn on when depleted by 5~10%. 2) Measure Humidity% and Ambient Temperature. This will be integrated into the dehumidifier as to turn it on when the ideal conditions are meet for max water generation. 3) Automatically circulate the filter loop pump system around 1 hour per day (mid day). Code attached, need to finish the math (any volunteers?) to convert distance into % with a range of 75 cm to 5 cm (75 = 0%, 5 = Full). Updated Parts list to include Arduino Parts breakdown Arduino Code as shown in picture included. (not finished)