Re: recommended outdoor enclosures

[Chuck Anderson <cra () WPI EDU>]

Unfortunately, I have some specific non-commodity circuit boards I'm
dealing with, so I have to accommodate their environmental
requirements. 

On Mon, Jun 17, 2013 at 01:22:26PM -0700, david peahi wrote:
> I have had success with the opposite approach using equipment rated from
> -40 C to +85 C (+185 F), no fans, sealed NEMA4 or NEMA12 Hoffman
> enclosures, cooling by equipment heat sinks. Ethernet switches and optics
> rated -40 C to +85 C
> This configuration has worked with the same equipment for at least 6 years
> in an environment where summer ambient temperatures reach 120-130 F, and
> winter ambient 0 F. Hoffman makes a 72" high NEMA12 enclosure with a
> swing-out 19" telco rack.
>
>
> On Mon, Jun 17, 2013 at 12:36 PM, Chuck Anderson <cra () wpi edu> wrote:
>
> > I'm in need of my first free-standing, pad-mounted outdoor enclosure,
> > 19" rack rails, 12-18 rack units, with about 400W of heat load inside,
> > for use in the Massachusetts climate.  What do people recommend as far
> > as contruction, cooling/heating options, NEMA ratings, security
> > options, etc. for this use?
> >
> > I was hoping to keep the inside temperature between 50 and 85 degrees
> > Fahrenheit, although my worst-case components are rated for 41 to 104
> > F (4 - 40 C).  If a full mechanical A/C system can be avoided, even
> > better.  A thermo-electric cooler would be nice.
> >
> > Thanks.