(100%@25L/m) O24U (Arduino Smart Controller)
Description
***Have Arduino code ready for this build. 4 relays, two safety protocols, screen with O2 readout, and more. Oh yeah, DIY oxygen analyzer being integrated into this project.*** Speaking of loaf of bread, I've been compacting it a bit down to the size of a loaf of bread. New version is going strong at 125%O2@75PSI@20L/m. Total increase in size around the size of a loaf bread. New video up. 97% there. Im journeying into the 110% concentration....maybe over-saturation now since it's going over 100%. I will call it that for now, and so I'm journeying into 10% over-saturation. (Over-saturation = excess of oxygen at specified flow rate) Sneak peak into plans for a DIY compact oxygen concentrator. Need a few more adjustments before I release the final paid version. I still need to dial in the concentration levels, but so far here are expected results. O24U-P is designed for 1-2 peoples oxygen needs at around 20L/min with no less than 70% concentration running at maximum. O24U-PHO is designed for 4 people's oxygen needs at around 90L/min with no less than 73% concentration running at maximum 15l/min. This is a double stage pressure swing absorption kit with a vacuum assisted air scrubber/buffer/exhaust. Special picked membrane filters are used for general air filtration/ bacterial sanitization, and air-splitting through pressurized cycles. Vacuum pump runs around -25inH till purge cycle and jumps to -10inH. Compressor pump currently is 1.2A 125L/min 135 psi max, double piston oil-free. Filter membranes used in this build are 0.1um/0.22um/0.45um. Each one has specific use and can flip results unexpectedly if placed wrong. Only one valve is needed for this build. Any more and just more expensive and more to go wrong. The valve is 5 port - 3 position usually used for actuating a pneumatic piston. Sieves beds are 20mm thick aluminum tanks 300mm tall and 50mm wide rated for 3000+psi. Pre sieve filter and post are also 20mm thick 70mm tall and 25mm wide rated for 3000+psi. 13X molecular sieve is used here. 4A molecular sieve is used in the buffers for desiccant. Total overall dimensions for this build is coming in around 385 mm height/ 161 mm length/ 161 mm width. ***Anyone interested in this build can contact me at [surgeff7@gmail.com].*** STL's and BOM will go for $25 if you want to build this yourself. Manufacturing a concentrator starts at $200 before shipping costs. If you are using my PayPal account to purchase this design or have it manufactured, PLEASE note all pertaining information so that I know who/what/when/where/why. *https://www.paypal.me/surgewilliams* Contact me for more accurate pricing based on your personal needs. **Any purchase grants you full access to the whole build process including future versions of this build.** **If these prices are out of your reach but are in desperate need for a concentrator, contact me at [surgeff7@gmail.com]. I have other plans for a dirty quick emergency oxygen generator.** *Side Note: I do make these on my own budget; being Unemployment I really can't afford low ball anything or give too much out for free. I'm not sponsored, nor affiliated, nor funded by any external business entity. I apologize.* Video of bench testing the kit can be found here: https://youtu.be/4Blr4O9OOXg Video of 97% concentration here: https://youtu.be/tyo4jYwbUDs Video of 90% concentration @ 60psi @ 12L/min here: https://youtu.be/4VbMWIEpAN8 Video of 100+ concentration @ 60psi @ 20+L/min here: https://youtu.be/Lab0s7kOusQ
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