A practical approach might involve placing the PCs in a closed cabinet
(insulated if it's metal) with the PC PSUs and the peltier power supply on
the outside of the cabinet.

The peltier(s) mounted to thermally-isolated heatsink(s) (isolated from the
cabinet walls, if metal) on/thru an external surface of the cabinet would
need to be able to exceed/extract the heating capacity of the CPUs and
memory sticks, mainly, without the added heat load of the PSUs.

The PC case fans would likely provide adequate internal air circulation if
the cabinet's internal dimensions are reasonable (not excessively
oversized).

Got a small/medium sized refrigerator?

Liquid cooled CPU heatsinks have been around for quite a few years. One
problem might be condensation of humidity if the heatsink is cool.

--
WB
..........


"Bob La Londe" wrote in message
...
How much real cooling can you get with the cheap peltiers you find for
sale on Ebay. My shop gets pretty hot in the summer, but its just not
practical to keep my controller computers in the office. I was
thinking about making mini duct/shrouds to draw air over the cold side
of a peltier into the PC cases.