Two Phase Cooling

Two Phase Cooling or fluid phase change applications, often referred to as “re-circulating,” use closed loop heat pipes to transfer heat quickly through evaporation and condensation within the heat pipe. Because of their high thermal efficiency, heat pipes are often designed into advanced heat sink technologies when increased thermal density or physical size restrictions exist.

Wakefield Thermal offers a selection of high-quality two phase cooling solutions for your electronics. All products are built to the highest specifications to allow your device to run at the optimal operating temperature for as long as required.

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Heat Pipes & Assemblies:

Heat pipes are a transport mechanism to move heat from the hot source to an area where the heat can be dissipated. Heat pipes do not actually dissipate the heat and are therefore incorporated into many different types of heat sinks as helpers. A heat pipe is a copper tube with an internal wick structure that is sealed on both ends with a small amount of water inside. As heat is applied to the pipe, the water will boil and turn to a gas, which then travels to the colder section of the heat pipe where it condenses back to a liquid. It is the evaporation and condensing of the water that forms a pumping action to move the water (and thus the heat) along the pipe.

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Thermoelectric Coolers:

Wakefield Thermal's Peltier, thermoelectric coolers can meet the requirement of higher current and large cooling. They are often applied to experimental applications, scientific and biomedical instruments, laboratory equipment, industry and electrical equipment, and consumables. The ambient temperature can arrive at 100C, while long-term working temperature is recommended to be below 90C.

Thermoelectric Assemblies:

Wakefield Thermal's Air to Air Thermoelectric Cooler Assemblies are usually used to cool (or heat) objects in enclosures. Heat is absorbed and dissipated by heat exchangers equipped with fans.

Wakefield Thermal's Air to Plate Cooler Assemblies are typically used in three key applications for cooling/heating:

  • Objects directly on the cold plate, or objects on an additional cold plate of your own design
  • Enclosures by attaching a thermal conductive container to the cold plate
  • Liquids by attaching a thermal conductive tank or liquid heat sink to the cold plate

The heat is absorbed by the cold plate, pumped through the TE modules and then dissipated to the air by an air heat sink.

Vapor Chambers:

Wakefield Thermal's standard vapor chambers offer superior thermal spreading performance over traditional solid metal heat spreaders by taking advantage of two-phase liquid/vapor transport. Their lower weight and height over traditional solutions couples with their high thermal conductivity to give extremely low thermal resistance in-plane as well as through the thickness of the vapor chamber. Vapor Chambers are best suited for components with high heat densities (larger TDP in small chip sizes) which need to spread their heat to a larger area heat exchanger to achieve safe operating temperatures, thereby providing extended life and reliability for components and applied products.

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