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Power supply unit watercooling

Power sources have two points that generate much heat: power transistors and dioes. These elements are held to big aluminum radiators through which air passes ans cool down. To modify that PSU I water cooled these same radiators.

Each radiator was covered with 0,8 mm aluminum sheets and 8 mm tubes were glued in ther ends so as to hold the plastic tubes. When all these pipes were installed it was not possible anymore to close the box, so the PFC coil had to be installed outside the box.

The rest of the PSU components also emit heat. I did some testing to check how hot they got, the transformers got very hot though they worked correctly al the time. So as not to take this pieces to their limits I decided to leave the main PSU fan connected but at 5 V. At this tension it almost makes no noise and it's enough to cool down the PSU.

Here some pictures to show how the PSU was adapted:

As can be seen the water cooled zone is not the whole radiator but it's lower part (closer to heating parts), the reason is that the upper fins are bigger and I had difficulties to cover them all.