4 exchanges a minute, not hour On Jul 16, 2017 10:32 PM, "Steve Jones" <[email protected]> wrote:
> 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? >>> >>
