At the core of most cryptocurrency networks are miners, the people who use specialized computer equipment to secure the cryptocurrency’s blockchain by performing mathematical equations millions of times per second. In exchange for this computing power, and the electricity it takes to run the computer, these miners are rewarded in cryptocurrency proportionate to their contribution to the network.

Given the high cost of electricity in many places and the computing equipment it takes to mine, it makes sense that miners try to maximize their return in any way possible. This has resulted in some creative approaches to cryptocurrency mining—including running a mining rig in the back of a Tesla, setting up a wind-powered rig in a field, using your own breath to run a mining rig, and even a mining rig that harvests human body heat—but the immersion cooled rig from Reddit user ‘Limping-Zebra’ takes the cake, at least as far as cool factor goes.

As detailed in a Reddit post on r/Bitcoin, Limping-Zebra managed to create a Bitcoin mining rig consisting of 36 ASICs (a specialized chip that in this case can only be used to mine Bitcoin) that are all immersed in a tank of oil. ASICs can get extremely hot while they’re running, and if you put a bunch of them together the heat can quickly damage the chips.

To address this problem, Limping-Zebra adapted an obscure cooling trick for immersion-cooled PCs and servers for their Bitcoin miners. On each of the 36 ASICs in the tank, the fans are reversed so that cooler oil from the bottom of the tank is sucked up toward the top of the tank in a cycle meant to optimize the dispersion of heat waste away from the ASICs.

This heated oil is then cooled using a plate heat exchanger that also has cool oil from a garden hose running through it. It is then run through a filter to remove particulates and pumped back into the system. Read more from…

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