The only way to make that work is to have two separate self contained water cooling units. Unit one is chilled by the cold side of the pelt and directly cools the CPU. Unit two cools the hot side o' the pelt. Caveats: Unit one should not have a radiator or the radiator would actually HEAT the water, if the water gets chilled below ambient. Further, unit two should, save the water blocks, be isolated completely from unit one to prevent bleeding.
This is why it isn't a good failsafe system. If the pelts fail, you will now have no cooling except for the water on the CPU. Once that water reaches a certain temp, either the hoses will burst from increased temp or the CPU will fry. Either way you're screwed.
In order to make it truly failsafe, you need a radiator in Unit 1 in case of pelt failure. Unfortunately, you're now cooling your room, but it'll give you slightly lower temps than straight water. Your rad will become a condensation magnet, though, so isolate it from your comp. For that matter, all hoses and EVERYTHING in Unit 1 will need insulated for that same reason. Talk about a PITA.
Best case is with the rad inline, though it is much less efficient than direct pelt cooling. The benefit is that your system should never fry unless you lose both the pelts and the pump.
Without the rad in Unit 1, you will essentially have a larger time window before your CPU fries if you lose your pelts.
Does that make sense? I'm on dental drugs right now, so I'm not totally with it.
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