I think we may have our wires crossed? either that or I'm misunderstanding you
My system will be cooled by an underground tank the rad will do nothing for the cooling except raise the coolant temp a small amount before it goes back to the tank. At the moment all the blocks in my system add under 1C to the coolant temp in one pass. This might increase to 2C or 3C with Tecs. So if I add this air "conditioner" rad, in the loop, (after its been through the blocks), it will get around 3C warmer coolant than enters the PC, so about 12C is my guess.
The plan is to build an improved underground cooler that will cope with the Tec's and not heat up at all, (probably a large run of copper pipes buried instead of a tank). Assuming I can build a truly effective ground cooler this time, (and It's going to be very large trust me
), then it will return the coolant to the PC completely re-cooled to between 8C to 10C )
The rad pictured before would be then working in reverse attempting to cool any air drawn through it by the chimney effect, as its going to be in the base of the PC drawing air from underneath any condensation that forms on it I wont drip on anything but the floor...... It's unlikely to be much, or for long periods where I live but if it turns out to be an issue I'll make a drip tray affair. The heated chimneys won't be any different than having a few light bulbs on, (nowhere near the heat that comes from a CRT monitor, and it would be at the top of the case. Could be outside vented if really need be.
Heating up the PC interior is the exact opposite of what I'm attempting to do as its the hot air combined with the high humidity % that is the issue causing condensation to form on the cool surfaces, (tubes and copper blocks). It's tricky to control the humidity without using fan based de-humidifiers, but if I can significantly lower the air temp inside the PC case the dew point will also fall significantly, (see my condensation chart).
If this is enough then the only place I'd likely get condensation is possibly the outside of the case in extremes, and on the air "conditioning" rad... (again its all untested theory until I build it), I wont need neoprene on the chimney however. Its warm humid air on a cold surface that leads to condensation not cold air on a hot surface.
It all sort of works in my head, but there are many variables....... its really just a case of will it work well enough to be an effective solution to the one or two months of humid & hot weather we get in the UK yearly?? ...... I better shut-up talking about and get on with actually doing it I guess