I mocked up some housings using metal filters like whats in an oven vent, our small boxes need 30cfm to make i think 4 full exchanges an hour, i might be remembering the number of exchanges i calculated at. But 30 was the magic number. I sized the filters so they could get 2/3 fully blocked and still have alot of room to clog, this kept the flow rate low across the filters to keep them efficient. I have to get one of the enclosures to the plumbers shop that helped me with sizing so they can fabricate the retrofit housings, pretty simple filter swaps like a furnace filter.
Long story short, go to your local plumber and talk to the hvac guys, theyll help you meet your needs and can get you retrofit kits fabricated way less expensive and way more efficient than buying a kit from somebody like hoffman On Jul 16, 2017 7:51 PM, "Chuck McCown" <[email protected]> wrote: > There are also air to air heat exchangers that call cool it down to > ambient. > > *From:* Lewis Bergman > *Sent:* Sunday, July 16, 2017 6:02 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] Retrofit cooling > > > closed loop ac is the best. Ventilation is ok add long as you use fine > screen on all intake and outputs. > > On Sun, Jul 16, 2017, 6:55 PM Jay Weekley <[email protected]> > wrote: > >> We've got some cabinets that have gotten crowded with electronics and we >> need to add cooling or ventilation. What's the best way to do this >> without adding an entry point for insects? >> >
