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Wet Rocks: Libre Single Phase Liquid Immersion Cooled Computer

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New Member
Mar 6, 2024
Loveland, Colorado, USA
Hello humans,

Wet Rocks is a libre design for a single phase immersion cooled computer.


The photo shows the system running with an ASRock server motherboard, AMD EPYC CPU with 1U server copper heatsink, and AMD PCI GPU without heatsink, all immersed in ElectroCool fluid.

The tank is divided into two parts, with a weir in the middle. The computer components are in the back of the tank. The hot fluid in the back section flows up to the top, overflowing into the weir which is the front hot side. The fluid is pumped from the hot/front side by a Koolance system with a radiator and fans. The fluid is then pumped back into the motherboard half of the tank. The fluid is jetted directly at the GPU with a Loc-Lite nozzle.

The design files are in Python using the build123 module. The bill of materials is in a Libre Office spreadsheet. Source code:

Happy hacking,