phase change cooler

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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.)


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.)


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.)
References in periodicals archive ?
The technology, called ECOphlex (PHase-change Liquid EXchange) has been designed to be "room air neutral", where the temperature of the air which enters the system is similar to that exiting the system.
The company's new cabinet with ECOphlex technology can either use Cray's vertical air cooling or its new liquid evaporative phase-change cooling technology which converts R134a, an inert coolant, from liquid to gas.
Cray XT5 systems with ECOphlex technology will reportedly begin shipping later in the year.