A Detailed Look – The LCS
The Koolance 1,200W power supply incorporates a liquid cooling system (LCS) that features true submersive cooling. The power supply housing is filled with a non-conductive coolant that directly absorbs heat from all the submerged components. A small integrated pump circulates the coolant thru an external radiator that dissipates heat into the room air outside of the PC enclosure. While some hard-core enthusiasts have been experimenting with various forms of submersive cooling for years, this is the first commercial PC product I am aware of that uses this technology.
Koolance Pump
Inside the power supply is a Koolance 12 VDC submersible pump, which circulates the coolant thru the LCS. The pump is powered internally from the power supply and is virtually silent.
- Model: R-PMP01
- Nominal voltage: 12 VDC
- Nominal power: 2 watts
- Nominal head: 1.5m (59” or 2.1 PSI)
- Nominal flow: 2L/min (31.6 GPH)
Koolance Radiator/Fan Assembly
Two hoses on the back of the power supply attach to the radiator with quick disconnect fittings. The ¼” ID tubing contains internal springs to prevent the tubes from crimping or collapsing, which would limit flow. The external radiator
The Koolance labeled fan has 7 blades and is protected behind a wire fan guard. The fan speed is controlled automatically by the power supply according to the internal coolant temperature and load. The fan also features a clear plastic frame and four blue LEDs.
- Frame size: 120mm x 120mm x 25mm
- Nominal voltage: 12 VDC
- Airflow: 30-107 CFM
- Bearings: Double ball
*Sound Pressure Levels (SPL) were measured 3’ away from the back of the power supply in an otherwise quiet room (ambient background ~29 dBA).
Koolance LCS Coolant
The coolant used in the Koolance 1,200W liquid cooled power supply is non-conducting and therefore is not water. While Koolance would neither confirm nor deny it, I suspect the coolant is one of the many formulations of Fluorinert made by 3M and widely used in the electronics industry.
