3571 results about "Cooling methods" patented technology

The invention is a method for controllably cooling at least a portion of a part-cake from a laser sintering system to minimize cool down time, maximize throughput, and minimize thermal gradients within the part-cake. The method generally comprises forming one or more thermal transfer channels within the part-cake. The thermal transfer channels can include ducts and cooling fins in the part-cake surrounding the formed part. The method can further comprise removing unfused powder from the ducts and introducing cooling media into the ducts. The invention also includes a part-cake having thermal transfer channels formed therein and a laser sintering apparatus comprising a part-cake containing cylinder having permanent fittings therein for receiving terminal portions of thermal transfer channels formed in the part-cake.

A cooling method and system is disclosed which utilizes vortex tubes to generate and direct cold air over heat-generating components of an electronic system.

The within invention improves on the indirect evaporative cooling method and apparatus by making use of a working fluid that is pre-cooled with and without desiccants before it is passed through a Wet Channel where evaporative fluid is on the walls to take heat and store it in the working fluid as increased latent heat. The heat transfer across the membrane between the Dry Channel and the Wet Channel may have dry, solid desiccant or liquid desiccant and may have perforations, pores or capillary pathways. The evaporative fluid may be water, fuel, or any substance that has the capacity to take heat as latent heat. The Wet Channel or excess cooled fluid is in heat transfer contact with a Product Channel where Product Fluid is cooled without adding any humidity. An alternative embodiment for heat transfer between adjacent channels is with heat pipes.

A cooling apparatus for a fired body includes a transporting member for transporting a firing jig in which a ceramic fired body is housed; a plurality of blowers for cooling the ceramic fired body; and a suction mechanism for changing the atmosphere inside the firing jig from an inert gas atmosphere to an air atmosphere.

A wind generator includes: a nacelle; a hub rotatably carried by the nacelle and including at least a pair of wind turbine blades; and an electricity producing generator including a stator and a rotor carried by the nacelle. The rotor is connected to the hub and rotatable in response to wind acting on the blades to rotate the rotor relative to the stator to generate electricity. A cooling system is carried by the nacelle and includes at least one ambient air inlet port opening through a surface of the nacelle downstream of the hub and blades, and a duct for flowing air from the inlet port in a generally upstream direction toward the hub and in cooling relation to the stator.

A superconducting system comprises a superconducting coil (3) mounted in a support (12). The coil is surrounded by a cryogen chamber (17) which is located radially outwardly from the coil (3) on the other side of the support (12). The cryogen chamber is in fluid communication with a cryogen recondensing unit (33) whereby vaporized cryogen may flow from the cryogen chamber (17) to the cryogen recondensing unit (33) to be recondensed in use before returning to the cryogen chamber. Thermally conductive means (25) is arranged to facilitate heat transfer from the superconducting coil (3) to the cryogen chamber (17) to vaporize cryogen contained therein in use and thereby remove heat from the coil. The thermally conductive means (25) is highly thermally conductive at cryogenic temperatures. In use, the highly thermally conductive means (25) facilitates transfer of heat from the coil (3) to the interior of the cryogen chamber (17) to vaporize cryogen located therein. A thermal conduction path is therefore used to transfer heat from the coil to the cryogen in the cryogen chamber. Cryogen vaporized in the cryogen chamber then flows to the cryogen recondensing unit (33) to be recondensed before returning to the chamber, while the vaporized cryogen acts as the heat transfer medium over the longer distance between the cryogen chamber and the recondensing unit.

Alloy steels that combine high strength and toughness with high corrosion resistance are achieved by a dislocated lath microstructure, in which dislocated martensite laths that are substantially free of twinning alternate with thin films of retained austenite, with an absence of autotempered carbides, nitrides and carbonitrides in both the dislocated martensite laths and the retained austenite films. This microstructure is achieved by selecting an alloy composition whose martensite start temperature is 350° C. or greater, and by selecting a cooling regime from the austenite phase through the martensite transition region that avoids regions in which autotempering occurs.

A battery pack is communicated with a luggage compartment via an outlet such that cooling air that has been heat transferred with a battery is released into the luggage compartment. A ventilation hole is formed in a rear portion of the luggage compartment. An inlet is opened toward the outside of the vehicle. An exhaust fan that discharges the cooling air at the temperature increased through heat transfer with the battery in the battery pack is provided to the front of the ventilation hole.

A modular cooling system configured to treat IT air generated by a data center includes a frame and a plurality of cooling sub-system modules supported by the frame. The plurality of cooling sub-system modules are configured to operate in parallel to achieve total cooling effect or a lesser cooling effect with some level of redundancy within the data center. Each cooling sub-system module includes a housing configured to support cooling equipment, an air-to-air heat exchanger supported by the housing to cool IT air generated by the data center, the air-to-air heat exchanger having at least one tube configured to direct IT from one end of the air-to-air heat exchanger to an opposite end of the air-to-air heat exchanger and configured so that outdoor air circulates around the at least one tube, and a mechanical cooling system supported by the housing. The mechanical cooling system is configured to receive IT air treated by the air-to-air heat exchanger and to provide further cooling to the treated IT air. Other embodiments of the cooling system and methods of cooling are further disclosed.

Systems for phase-change particulate slurry cooling equipment and methods to induce hypothermia in a patient through internal and external cooling are provided. Subcutaneous, intravascular, intraperitoneal, gastrointestinal, and lung methods of cooling are carried out using saline ice slurries or other phase-change slurries compatible with human tissue. Perfluorocarbon slurries or other slurry types compatible with human tissue are used for pulmonary cooling. And traditional external cooling methods are improved by utilizing phase-change slurry materials in cooling caps and torso blankets.

Systems for phase-change particulate slurry cooling equipment and methods to induce hypothermia in a patient through internal and external cooling are provided. Subcutaneous, intravascular, intraperitoneal, gastrointestinal, and lung methods of cooling are carried out using saline ice slurries or other phase-change slurries compatible with human tissue. Perfluorocarbon slurries or other slurry types compatible with human tissue are used for pulmonary cooling. And traditional external cooling methods are improved by utilizing phase-change slurry materials in cooling caps and torso blankets.

Modular data center containers with modular components suitable for use with rack or shelf mount computing systems currently use cooling methods that do not include economizers due to size constraints of structural steel support infrastructure associated with modular data centers and removable economizers to facilitate portability of modular data centers. The modules allows introduction of outside air to the cooling cycle with the unique elements embodied within airside economizer components. The modules in conjunction with the data center represents a new and useful process to allow the economizer elements to bring outside air into the modular data center cooling cycle.

The aim of the invention is to optimize cooling of a rotor using simple means. A rotor is provided, comprising rotor pressure rings (1) such that at least one of the two rotor pressure rings (1) is configured in order to enable targeted guiding of the coolant through the axial bores (3, 3′) in the rotor. In a special embodiment, the rotor pressure ring (1) can be formed in such a manner that it produces, in several bores (3′) in the rotor sheet stack (8), a flow of coolant in a first direction and in other bores (3), a flow of coolant in the other direction. An even, opposite flow cooling can be exclusively obtained by the contour of the rotor pressure ring (1).

The invention relates to the technical field of an electric spindle, in particular to a high-speed precise electric spindle cooling system which comprises an electric spindle shell cooling part, an electric spindle core cooling part and a bearing spindle core lubricating/cooling part, wherein when the electric spindle works, the temperature rise change can be controlled within +/-1 DEG C. The concrete scheme is as follows: a ring sleeve type heat pipe cooling mode is arranged at the electric spindle shell part, and the heat of the shell is taken away quickly by increasing the cooling contact surface; the spindle core cooling part is provided with symmetrical bar-type heat pipes which are uniformly distributed on the spindle core, and the spindle core is cooled by use of the high-speed conductivity and homoiothermy of the heat pipes; and a spindle core liquid lubricating/cooling mode is adopted at the bearing lubricating/cooling part, and makes full use of the high rotation speed of the high-speed electric spindle to generate centrifugal force so that the lubricating/cooling liquid is uniformly distributed on the bearing roller. The temperature stability of the electric spindle can be ensured, the processing precision error caused by thermal expansion of the electric spindle is minimized, and the service life of the spindle and the spindle bearing can be prolonged at the same time.

A high efficiency R744 air conditioning and refrigeration system and cycle comprises a vapor compressor and two independent ejectors operatively connected to high and low-pressure sides of the compressor, respectively. The two ejectors reduce the overall pressure ratio of the mechanical vapor compressor resulting in dramatically increased thermodynamic cycle efficiency. As one example of its potential applications for residential, commercial or industrial uses, a 150 ton capacity of a water-cooled chiller designed in accordance with the present invention is predicted to provide the power consumption as low as 0.47 kW/ton, when operated in accordance with the cooling methods of the present invention, which corresponds to 7.47 of Coefficient of Performance (COP).

A steam turbine system for use in conjunction with hybrid last stage(s) LP buckets. The system is adapted to cool the bucket tip region during low VAN windage conditions whereby the beneficial design and efficiency outcomes of the use of hybrid blades can be realized.

A cooling structure includes a heat dissipation structure 20 having a heat generator 8 and a heatsink 7 that is adhered through an insulating adhesive layer 6 to at least a surface of the heat generator 8 that faces a cooling fluid 9 and made of a metal foil having the flexibility; and a fluid flow path 5 that is disposed outside of the heat dissipation structure 20 so that the cooling fluid 9 flowing inside thereof and the heatsink 7 may directly come into contact. Furthermore, on a surface of the heatsink that directly comes into contact with the cooling fluid 9, a fine recess 15 is disposed.

A localized directional impingement cooling is used to reduce the metal temperatures on highly stressed regions of the tip shroud.

According to one embodiment of the present technique, forced air (i.e., air flow) is routed through a motor stator having corners and center ducts. Advantageously, by routing the air flow through ducts in accordance with the present technique, air flow is more evenly distributed throughout the motor, thereby reducing hotspots. By way of example, the motor stator my include fins that affect air flow and provide heat dissipation surfaces to the motor.