252results about How to "Increase cooling power" patented technology

Active cooling technologies such as thermoelectrics can be used to introduce thermal “gain” into a cooling system and, when employed in combination with forced flow liquid metal cooling loops, can provide an attractive solution for cooling high heat flux density devices and / or components. Total cooling power can be increased by employing multiple thermoelectric elements. Indeed, by employing modern semiconductor technologies, including e.g., thin-film technologies, thermoelectric elements may be cost-effectively employed and configured in large arrays.

Active cooling technologies such as thermoelectrics can be used to introduce thermal “gain” into a cooling system and, when employed in combination with forced flow liquid metal cooling loops, can provide an attractive solution for cooling high heat flux density devices and / or components. Total cooling power can be increased by employing multiple thermoelectric elements. Indeed, by employing modern semiconductor technologies, including e.g., thin-film technologies, thermoelectric elements may be cost-effectively employed and configured in large arrays.

Active cooling technologies such as thermoelectrics can be used to introduce thermal “gain” into a cooling system and, when employed in combination with forced flow liquid metal cooling loops, can provide an attractive solution for cooling high heat flux density devices and / or components. In such configurations, it can be advantageous to configure fluid flows to provide heat transfer between hot-side and cold-side flows. For example, it can be desirable to substantially equilibrate temperature of liquid metal flows entering hot-side and cold-side paths. In this way, thermal differential (ΔT) across individual thermoelectric elements can be reduced, thereby improving efficiency of the thermoelectric. Various suitable recuperator designs are described including designs that provide heat exchange with and without mixture of respective flows.

In a centrifugal fan the diameter of the impeller is rendered less than 20 mm, yet by rotating it under rotational conditions in which the centrifugal force along the impeller periphery is 10,000 m / s2 or more, the static pressure that the fan generates is heightened. At the same time, rendering the vane spacing a predetermined width or less reduces noise. Configuring in this way produces a small-scale, high-static-pressure, low-noise fan for cooling electronic devices. Furthermore, by mounting the centrifugal fan on a heatsink having densely arranged heat-dissipating projections a small-scale, high-cooling-capacity, quiet cooling device is realized.

A liquefier includes a Dewar having a storage portion and a neck portion extending therefrom. A hermetically isolated liquefaction chamber is disposed within the neck of the Dewar. One or more control components including a temperature and pressure sensor are coupled to a CPU and disposed within the liquefaction chamber for dynamic control of liquefaction conditions. A gas flow control is coupled to the CPU for regulating an input gas flow into the liquefaction chamber. A volume surrounding the liquefaction chamber may be adapted to provide a counter-flow heat exchange. These and other features provide improved liquefaction efficiency among other benefits.

The invention envisages a light-generating apparatus that provides effective cooling of the reflector, the apparatus comprising a reflector and a device for improving the dissipation of heat from the reflector.

The invention discloses a magnetic refrigerating device based on a pulsed magnetic field. The device comprises a repetitive pulsed power supply without a continuous loop, a pulsed magnet, a magnetic refrigeration working medium, a hot end heat exchange unit and a cold end heat exchange unit, wherein the repetitive pulsed power supply discharges to the pulsed magnet, and part of electric energy flows back to the repetitive pulsed power supply to achieve energy recovery; during the discharge process, the pulsed magnet generates the pulsed magnetic field and causes the refrigeration working medium to magnetize and release heat, and the heat generated by the magnetic working medium is transferred to a high-temperature heat source through the hot end heat exchange unit; after the discharge is finished, the repetitive pulsed power supply is shut off, and the pulsed magnet stops generating the pulsed magnetic field, and the magnetic refrigeration working medium demagnetizes and absorbs the heat, and through heat absorption of a low-temperature heat source by the cold end heat exchange unit, the temperature of the low-temperature heat source is lowered, thus completing a discharge refrigeration cycle; and the discharge refrigeration cycle is circulated in a manner above to realize continuous refrigeration. According to the scheme disclosed by the invention, the controllable pulsed magnet generates the intermittent repetitive pulsed magnetic field to achieve the magnetic refrigeration, and the magnetic refrigerating device has the characteristics of high magnetic field intensity, no moving part, convenience and fastness of control, high efficiency and high refrigeration power.

The performance of a multi-stage inertance pulse tube cryocooler in accordance with an embodiment of the present invention may be enhanced by cooling the inertance tube of one stage placing it in thermal communication with the cool heat exchanger of a preceding stage. Cooling at least one inertance tube of a multi-stage cooler in this invention lowers the viscosity and sound speed of the gas in the inertance tube, thereby improving the cooling power for that subsequent cooling stage, and for the entire device.

Extinguishing medium in pasty to solid form for quenching electric arcs, consisting of a silicone polymer or a mixture of such silicone polymers, with the silicone polymer or the mixture of silicone polymers containing a mineral compound or a mixture of such compounds in powder form as a filler; use of the extinguishing medium to quench electric arcs in overcurrent-protection elements, in electronics and microelectronics; in high-voltage engineering; or in repeating fuses, and electrical devices, machines and systems which contain an extinguishing medium according to the invention.

A shutter device can switch between a state where illuminating light from a lamp of an illuminating device is blocked (referred to as a closing state of the shutter device) and a state where illuminating light passes through (referred to as an opening state of the shutter device). A system control circuit instructs a panel cooling fan-use power source to decrease a fan rotation speed, when receiving information indicating that the shutter device is in the closing state from the detecting portion. After receiving this instruction, the panel fan power source decreases power supplied to the panel cooling fan (fan motor).

Extinguishing medium in pasty to solid form for quenching electric arcs, consisting of a silicone polymer or a mixture of such silicone polymers, with the silicone polymer or the mixture of silicone polymers containing a mineral compound or a mixture of such compounds in powder form as a filler; use of the extinguishing medium to quench electric arcs in overcurrent-protection elements, in electronics and microelectronics; in high-voltage engineering; or in repeating fuses, and electrical devices, machines and systems which contain an extinguishing medium according to the invention.