Re: CNC vs HOT WEATHER, WHAT TO DO??.

Shade will go a long way.

if you can keep the sun off the roof, 90% of your heat gain will go
away. depending on how you want to do it, a false roof, a foot
higher than the real one will allow air flow and eleminate the heat.
A tarp should be easy enough to put over the roof on milk crates to
keep it off enough. it would work for some the the summer months.

most people insulate, not enough people over-insulate. R-22 or more,
pack the stuff to allow air flow from the eves to the ridge vent or
fans. Then instead of dryall, use a thick layer of ridgid foam boards
for another layer of insualtion. Then seal all the cracks with tape.

once you insulate the heck out of the place, air conditioning will be
much cheaper.

ANY, repeat ANY openings will drastically lower the efficency of air
conditioning. it takes 5 times more energy to reduce humidity than
to cool and tiny cracks let humidity flood in. That's why they seal
electrical outlets from leaks in the new energy efficient homes.

but, no cracks lets you inhale the fumes so you need to get a good
balance between fresh air and air conditioning.


As far as the electronics, you can blow air over them at great
volumes to increase the heat exchange of the heat sinks. loosly,
air mass is the thing that does the heat exchange, greater
differential temperatures will have a higher percentage of exchange,
but you need volume to get rid of the heat when you don't have the
temperature spread.

And one option is to get an old refridgerator and put all your stuff
in that. wires out for the keyboard and monitor, and, you can keep
your beer cold too !

Dave







--- In CAD_CAM_EDM_DRO@yahoogroups.com, "David A. Frantz"
<wizard@e...> wrote:

> Hi Luis;
>
> Well obviously if it is 100 outside there is no way to drop below

that

> without some sort of cooling system. Such a system would not be
> pratical without a completely insulated garage. So that is your

first

> decision do you want to spend the money to insulate.
>
> If the temperature in your garage is well above 100 but you can

find 100

> itself tolerable roof mount fans may help. By the way even here
> insulation will help. In the same manner it may be possible to
> implement some passive devices such as a thermo siphons.

Anything to

> pull the hot air up will help.
>
> Another consideration is shade trees. This of course takes some

time

> before it is effective, but you would be surprised how a much a

couple

> of shade trees can impact heat gain.
>
> If shade tress aren't possible then take advantage of that roof

line and

> add a few solar panels. Use the collected energy to cool the

building.

>
> Thanks
> Dave









>
>
> luisguillermo98 wrote:
>
> >I am wondering how to cool down the workshop in my garage.. I am
> >wondering how you guys face this problem. the weather in Oklahoma

is

> >100 f and sometimes worse and probably in your statey is about the
> >same. My garage is too hot sometimes that I can not even stay for

few

> >minutes there eventhough I have two fans but I am worry most is

about

> >the electronic equipment. I need to know if the computer and cnc
> >drivers like gecko will survive this.. any suggestion???.. what

about

> >in cool weather and condentation??
> >
> >Luis..
> >
> >
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