Another thing: WAF!
I have a liquid cooled miner.* It is dead silent,* but the main point is that it heats our bathroom floor.* Pictures says more than words, so I attached a few.
My computer. An oldish Athlon64 X2 in a cabinet from a previous century.* Sorry about the mess.* The cabinet is usually closed for optimal airflow.* You see the water tube entering at the bottom, water passing through the 5970 water block (the shop were sold out of nipples fitting my tubing, and put in some 1/2" tubing and adapters, so it is a bit messy in there), then through my CPU block before heated water leaves at the top.* The direction has a purpose.* If I start the computer with no pump, the water will flow by itself due to convection.* Convection isn't enough for cooling the 5970 as well, so the pump must be running when mining.* And compare the size of the stock cooler in the lower right corner with the water block.* The card is now half as thick, and the PCI socket next to it is usable again!
Tubes going up through the roof above.* This is not finished.* I'll make better connectors closer to the ceiling and box them in later.* The thing on the tube to the right is a flow indicator.* The cable coming out of the same hole and going to a RJ45 socket (not connected yet), connects a series of temperature sensors embedded in the floor and walls, and a temperature and humidity sensor next to the fan in the bathroom.
Tubes under my bathroom floor and one of the temperature sensors (inside a blue shrink hose).* This is now buried in cement and covered with nice tiles.
Reservoir where the water returns.* Inside there is a small pump (300 l/min, 0.5m head), which keeps the water flow going and bubbles out of the tubes.* Water level inside here is 0-level.* In the tubes above the water level in the reservoir, there is actually a vacuum, and the water pressure inside my computer is low.
The best thing about my water cooling and floor heating is that my wife keeps nagging me to buy a second 5970 to make the floor warmer.* Beat this with a air cooled system.