removing parts from PCBs

The real problem with water is not it's conductivity. High power tube transmitters have used distilled water in the past as it's a really poor conductor if kept clean. DEC experimented with water cooling too. The Aquarius project was a water cooled VAX. Too many headaches with leakage, heat transfer to the environment and installation issues. Systems like that use a chiller and heat exchanger to cool the closed loop water system. Those are costly and difficult to install. Murder if it should leak in a computer room. Then there is an efficientcy problem as you end up using power to move heat which adds heat.. With all that, the circuits they were trying to cool were getting more power efficient. So by time they worked out wet cooling air cooling was again attractive or at least far easier. It's still packaging. ;) Allison