William Ramsey @WilliamRamsey@social.cleverlibre.org
I design things.
Joined Nov 2022
Housing similar in construction to strip light (inverted). End caps detach to couple fixtures. Filter frame/media can be wedged between housing sides and weather stripping for adequate seal.
#IAQ 12V Fan & Filter modular strip assembly (akin to strip lighting fixture).
#IAQ Fan & filter array assemblies using roll of welded wire mesh for framing. Ex. MTB SS304 Stainless Steel Welded Wire Mesh 24 inches x 10 feet- 1/2 inch x 1/2 inch Mesh 18GA(1.2mm) https://www.amazon.com/dp/B076WSJ39Z
@AmpBenzScientist Drew this up based on a 2 ft wide roll of welded wire mesh:
@AmpBenzScientist I purchased this roll to fashion assemblies. Could also use metal banding to bind arrays, use magnets or elastic to affix sacks.
MTB SS304 Stainless Steel Welded Wire Mesh 24 inches x 10 feet- 1/2 inch x 1/2 inch Mesh 18GA(1.2mm) https://a.co/d/cMxiag3
@AmpBenzScientist A tooless method for mounting/swapping fans could be a plus too. Here's an example of a fan 'tray' with integral grill (ebay) and fan joiners (etsy). (I don't know how much if any difference fan spacing makes re performance.) Idk how much you've followed, but https://twitter.com/robwiss has tested a number of fan/filter combinations, to give you a better idea. I see my approach as less a commercial product than a extensible system that can be designed & spec'd for a space, assembled, installed & 'certified' by a technician from say a HVAC/Electric Co., perhaps paired with some airflow modeling- a service. (The ability to fabricate or wholesale purchase fans/materials in bulk would drive down costs substantially.)
@AmpBenzScientist And of course, a PC power supply could deliver 12V power.
@AmpBenzScientist Whichever design needs power. There are numerous available wall plugs and 12 V transformers of varied wattage, as well connector adapters, which can dictate array size/layout. (A cluster of 12 fans can be powered with a 24W power source.)
@AmpBenzScientist A couple examples of ad-hoc frame and grill, (which can be wrapped in filter media). A mesh grill can serve as both fan mounting and blade protection.
@AmpBenzScientist Thanks for the replies, I appreciate the feedback! Here are a couple examples of framing - a mini plant cage, and a hanger. I think If designers could have some general confidence in fan performance as a function of surface area, and access to factory rolls of filter media, they could offer more integrative solutions. To that, some valve engineer put together a spreadsheet to estimate performance. I don't have link to his wiki but here's a copy:
https://drive.google.com/file/d/10876l7wQnEMgXvk6rNdkifDWkJxTmRru/view?usp=drivesdk
Some notes on general filter 'sack' design, if you can imagine the drawing as a sheet of filter media #IAQ
@mattsheffield Sorry, just one last thing to consider. As with Trump, people know Musk is dangerous. Case in point. Yet they remain; and while I'm sympathetic to justifications, I do not think we can/will properly illustrate the danger of Trump(ism) without recognizing (and acting upon) that of Musk. They are related. I believe remaining on Twitter undermines one's arguments (and society), for it erodes (my) faith and makes going along with dangerous actors seem ok. People must know that too on some level, or be so persuaded.
@thoughtsofawho Example of product from filter company. Same concept.
@thoughtsofawho This design could be push or pull across filter, and while the sack doesn't exist as a product, I'd make the argument that perhaps it should or could simply, as it is formed from a rectangle and has 2 seams. The circumference around fans above is 8 x 140mm = ~44 in, and a factory roll is 32" (I think, don't have my supplies, could vary idk)). So, a rectangle 22.5" x 32" that is is folded and glued along seams to produce a 16" sack . Is this enough surface area for optimal fan performance? Perhaps. (A goal would be to effectively utilize factory roll/ simplify manufacturing process. This same method can be used for varied arrays or matrices, if can deduce optimal surface area per fan.) I'd point to vacuum bags as comparison.
@jcagar two last things, regarding arrays:
https://www.etsy.com/listing/1156864558/fan-joiner-connector-mining-rig-120mm
140mm, 12V Fan & MERV-13+ Filter Sack Array, using Corsair fan tray. #IAQ
Example of 4" "mixed flow" fan. These are commonly used in w/ indoor grow ventilation. Also note some Noctua fans have higher static pressure than ARCTIC P14s, performed better with this filter.
I design things.
Joined Nov 2022
