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phase change cooler

A computer cooling method that uses the same liquid-to-gas-to-liquid cycle as a refrigerator or freezer, but with different coolants and construction. A compressor and condenser turn gas into liquid, and an evaporator converts it back into gas, while absorbing heat from the CPU chip and other components. Phase change cooling creates subzero temperatures as low as -100 degrees Centigrade, but the humidity created by condensation is a side effect that has to be dealt with.

Overclocking and Supercomputers
Phase change cooling has typically been used by enthusiasts who bump up the CPU clock speed to push their computers to the limit. However, in 2008, supercomputer builder Cray Inc. introduced its ECOphlex (PHase-change Liquid EXchange) system for its XT5 series with a unique method for eliminating water condensation and leakage. In addition, whereas refrigeration systems normally expel heat, the air leaving an ECOphlex system is nearly the same temperature as the air entering it. See CPU cooler.

In or Out of the Case
At top, this Cooler Express phase change unit sits comfortably underneath a tower case. Below the tower image is the same unit with motherboard and drives exposed. Diehards forgo the case for even greater cooling and fast component replacement. The red arrow on the thermometer points to the minus sign (-46.2 Centigrade). (Images courtesy of Cooler Express International Technology Co.)

CPU cooler

A device that draws heat away from a CPU chip and other hot-running chips such as a graphics processor (GPU). See heat pipe and notebook cooler.

Heat Sink
The simplest cooler is an aluminum heat sink, which absorbs and disperses the heat.

Fans and Heat Sinks Together
This Chip Coolers fan sits on top of a heat sink to cool a hot-running CPU chip. Fans and heat sinks are widely used in combination. (Image courtesy of Tyco International, Ltd.)

A Closed Water Loop
A Zalman water cooler was used to make this PC quiet. By directly cooling the chips, the case fan runs very slow. Water is pumped from the external radiator to the CPU, to the graphics card GPU, to the flow indicator in front of the case and back to the radiator.

Built Into a Graphics Card
This PNY graphics card comes with its own cooling system that also cools the CPU. The radiator and fan (left) cool the water coming from the card, and the center unit is placed over the CPU. (Image courtesy of PNY Technologies,

A Lot Colder
Below this tower case is a phase change cooler that uses a refrigeration unit to create subzero temperatures. For more details, see phase change cooler. (Image courtesy of Cooler Express International Technology Co.)

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Before/After Your Search Term
PgUp/PgDn keysphase change cooling
PhaaSphase change disc
phabletphase change disk
phage virusphase change drive
phalletphase change memory
phantom callphase change printer
phantom linesphase change RAM
phantom pagephase change recording
pharmingphase encoding
phase changephase locked

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