Tech Support Pits:

From Art===
Dear Webby,
We have a few computers in a dust proof console. With the
warmer weather it is getting way too hot in there. What is
the best way to cool them without going to expensive
air conditioning?
Thanks
Art

Dear Art
Just get a short section of hot water radiator and hook it
up to cold water. Mount it in the top of the cabinet.
Adjust the flow to a slow trickle and use an electric valve
from a dishwasher or washing machine so that you can
shut it off at night or when the temperature is cooler
with just a push button.

The drain pipe or hose should exit into a sink or
eaves trough or anything that is higher up than the radiator.

Usually the fans in the computers create enough turbulence
in a cabinet, but you can always mount a fan from an old
power supply to blow across the radiator. Any reasonably
quiet fan will do for that.

Don't worry about condensation. You aren't using fresh air.

Have FUN
Dear Webby