Abstract:
Techniques for heat transfer are provided. In one aspect of the invention, a heat-transfer device (200) is provided. The heat-transfer device comprises one or more microchannels (213) suitable for containing a heat-transfer fluid, one or more of the microchannels having protruding structures (214) on at least one inner surface thereof configured to affect flow of the heat-transfer fluid through the one or more microchannels. The structures may comprise posts coated with a hydrophobic coating.
Abstract:
Techniques for heat transfer are provided. In one aspect of the invention, a heat-transfer device (200) is provided. The heat-transfer device comprises one or more microchannels (213) suitable for containing a heat-transfer fluid, one or more of the microchannels having protruding structures (214) on at least one inner surface thereof configured to affect flow of the heat-transfer fluid through the one or more microchannels. The structures may comprise posts coated with a hydrophobic coating.
Abstract:
An apparatus, comprising a plurality of closed cells disposed on a surface of a substrate. Each of the closed cells has at least one dimension that is less than about 1 millimeter and are configured to hold a medium therein. The apparatus also comprises a foam that contacts the closed cells. The foam has fluid walls that include a surfactant, and bubbles of the foam layer are filled with the medium.
Abstract:
An apparatus includes a thermoelectric cooler adjacent to a surface of a device substrate and including a first set of one or more metal electrodes, a second set of one or more metal electrodes, and one or more semiconductor members. Each member includes a material different from the device substrate and physically joins a corresponding one electrode of the first set to a corresponding one electrode of the second set. The electrodes and at least one member are configured to transport heat to or from a thermal load in a direction parallel to the surface of the device substrate.
Abstract:
A fan includes a plurality of blades 9 carried by a hub housing 10 mounted on a rotatable motor shaft 6. The shaft 6 includes a heat pipe 11 to transfer heat from the motor bearings 7 and 8 to a heat dissipative plate 15. The fan is particularly useful for cooling electrical and electronic equipment housed within a cabinet, such as, for example, in a telecommunications arrangement.