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

 

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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

 

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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

 

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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

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*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.

 

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