74results about How to "Improve heat removal efficiency" patented technology

Disclosed is a continuous process wherein carbon monoxide, a carbonylatable reactant, and a halide in the gas phase are contacted with a non-volatile catalyst solution comprising an ionic liquid and a Group VIII metal to produce a carbonylation product in the gas phase. The process is useful for the continuous preparation of acetic acid by the carbonylation of methanol.

Techniques provide improved thermal interface material application in an assembly associated with an integrated circuit package. For example, an apparatus comprises an integrated circuit module, a printed circuit board, and a heat transfer device. The integrated circuit module is mounted on a first surface of the printed circuit board. The printed circuit board has at least one thermal interface material application via formed therein in alignment with the integrated circuit module. The heat transfer device is mounted on a second surface of the printed circuit board and is thermally coupled to the integrated circuit module. The second surface of the printed circuit board is opposite to the first surface of the printed circuit board.

A heat sink with shape-optimized fins provides for improved heat transfer. Synthetic jets create vortices which enhance heat transfer and cooling of downstream fins, while the shape of the fins limits pressure drop in the flow over the cooling fins.

The invention discloses a semiconductor packaging structure which comprises a substrate, at least one chip, a packaging colloid and a grapheme layer. The grapheme layer is arranged on the packaging colloid or arranged on the surface e of the chip. By means of the grapheme layer, the semiconductor packaging structure has high planarity heat-conductivity coefficient, facilities lateral heat conductivity, increases even conduction of heat and heat exchange area, and further improves the heat conducting-out efficiency of the chip.

A plasma display device includes a plasma display panel having a front substrate and a rear substrate spaced apart from the front substrate to form a plurality of discharge spaces, and a chassis base facing the plasma display panel. The plasma display device includes at least one channel adapted to allow air to flow therethrough to improve heat removal efficiency, the at least one channel being arranged between the rear substrate and the chassis base.

A coolant pumping device includes a casing containing a stator portion of an electrical motor, including windings and silicon steel plates, and a control circuit board. A first chamber is formed atop the casing in which a blade assembly is rotatably received for effecting circulation of a coolant. A second chamber delimited by a cylindrical wall fixed inside the casing rotatably receives a rotor magnet, which is driven by the stator portion. The blade assembly is fixed to the rotor magnet. Slots are defined in the casing for retaining the control circuit board. A Hall IC, serving as a sensing element for detecting polarity of the magnet inside the second chamber is electrically connected to the circuit board and is fixed inside the casing. The sensing element provides a detection signal to the control circuit board to enhance operation smoothness of the pumping device.

A heat receiving block formed of carbon material having a through hole; a cooling tube formed of copper alloy fitted in the through hole of the heat receiving block; cylindrical material of interlayer disposed between the heat receiving block and the cooling tube; and brazing material layers inserted between the material of interlayer and the heat receiving block and between the material of interlayer and the cooling tube, also a slit which penetrates the heat receiving block and the material of interlayer over thickness of the heat receiving block and reaches the cooling tube on the back side of the heat receiving surface. It can provide heat receiving tile formed of carbon fiber composite material for high heat flux component such as a first wall of nuclear fusion reactor, which is produced by metallurgically joining carbon material with copper alloy and has higher cooling efficiency than conventional heat receiving tiles.

The invention relates to a method and a device for cooling ultrasonic transducers. The inventive device is characterised in that it consists of at least one piezo stack (4) and at least two cylindrical transducer bodies (5), which together with the piezo stack (4) form an lambda /2 oscillator. In multiple transducer assemblies, two respective transducer bodies (5) can be combined to form a common transducer body (6) and the transducer bodies (5, 6) comprise flow channels (7), through which pressurised coolant can flow. The inventive method for cooling ultrasonic transducers is characterised in that the body of the ultrasonic transducer is traversed and/or surrounded by a pressurised coolant. This enables the heat that is generated in the transducers to be directly dissipated by convection. In addition the inventive elements enable the creation of a large common contact surface between the transducers and the coolant. The heat dissipation achieved is substantially more effective than in known methods and the inventive elements thus guarantee a high-performance continuous operation.

The invention relates to a novel shell side structure for a vinyl acetate synthesis reactor. An upper ring-shaped distributor and a lower ring-shaped distributor are uniformly disposed at upper and lower ends of the shell side structure along peripheral directions respectively, the upper ring-shaped distributor is provided with at least two discharge ports, the lower ring-shaped distributor is provided with at least two inlet ports, at least two discharge ports among the at least two discharge ports are in a flow communicatio with each other through an annular channel arranged in the upper ring-shaped distributor, and at least two inlet ports among the at least two inlet ports are in the flow communication with each other through an annular channel arranged in the lower ring-shaped distributor. A shell and tube vinyl acetate synthesis reactor comprising the novel shell side structure is further related. By means of the shell side structure and the shell and tube vinyl acetate synthesis reactor with the same, uniform flow and uniform heat removing of water and steam which serve as heat removing mediums can be achieved in a shell side, the radial temperature difference of the reactor can be reduced, so that the overall performance of the shell and tube vinyl acetate synthesis reactor can be improved, the synthesis reaction heat can be reasonably utilized, the operation cost is lowered, and the investment and operation costs of devices of a heat-conducting medium circulating pump and the like can be reduced.

The present application relates to a light emitting diode module comprising: a light source device (11), a cover (10) for said light source device (11), the cover (10) being arranged to connect to an optical device (21); wherein said cover (10) comprises a heat conducting part (24, 34) which has an at least one order of magnitude higher thermal conductivity than the remaining part of the cover (10) and which is arranged to thermally connect said light source device (11) with said optical device (21). The present application further relates to a corresponding cover for a light source device (11) in a light emitting diode module (1).

A high-efficiency transformer heat dissipation device comprises a housing, a transformer body is arranged on the upper surface of the inner wall of the housing, a first bearing is clamped on the rightside of the housing, a first rotating shaft is sleeved inside the first bearing, the right end of the first rotating shaft is fixedly connected with the output shaft of the first motor, and a fixingplate is fixedly connected with the lower surface of the first motor body. According to the heat dissipation device of the high-efficiency transformer, by setting a first motor, the rotation of the output shaft of the first motor drives the rotation of the first rotating shaft and the rotation plate, at that same time, a second rotating shaft makes a circumferential motion and drives the third motor and the second fan blade to move rightward through a third bear, a second traction rope and a pulley, so that the second fan blade can radiate heat to the transformer body in the mode of reciprocating leftwards and rightwards , so that the heat generated by the transformer body can be removed in time, the possibility that the related circuit is damaged is avoided, and the service life of the transformer body is ensured.

The invention relates to the nuclear energy field, including pressurized water reactor containment internal passive heat removal systems. The invention increases heat removal efficiency, flow stability in the circuit, and system reliability. The system has at least one cooling water circulation circuit comprising a heat exchanger inside the containment and including an upper and lower header interconnected by heat-exchange tubes, a riser pipeline and a downtake pipeline connected to the heat exchanger, a cooling water supply tank above the heat exchanger outside the containment and connected to the downtake pipeline, a steam relief valve connected to the riser pipeline and located in the water supply tank and hydraulically connected to the latter. The upper and lower header of the heat exchanger are divided into heat exchange tube sections on the assumption that: L/D≦20, L being the header section length, D being the header bore.

The process for producing an olefinic polymer comprises introducing a saturated aliphatic hydrocarbon in a liquid phase state and in a vapor phase state into the aforementioned fluidized-bed and (co)polymerizing in the condition that when the inside radius of the cylinder section of the fluidized-bed reactor is defined as a distance of 1, the relationship between the concentration (C1) of the saturated aliphatic hydrocarbon put in a liquid state in the peripheral portion of the cylinder section at a relative distance of 0.7 to 1.0 from the center of the cylinder section as a start point and the concentration (C2) of the saturated aliphatic hydrocarbon put in a liquid state in the center portion of the cylinder section at a relative distance less than 0.7 from the center fulfills the following equation: C1>C2 at a place close to the upstream section of said gas distributing plate.

The invention discloses a fixed power distribution cabinet convenient to mount and maintain and mainly solves the problem of inconvenience in heat radiation and maintenance due to messy lines in cable chambers in the prior art. The fixed power distribution cabinet convenient comprises an underground cable chamber (1), a mounting chamber (2) and vent holes (3), wherein the mounting chamber (2) is arranged above the underground cable chamber (1), and the vent holes (3) are arranged between the cable chamber (1) and the mounting chamber (2). The fixed power distribution cabinet is characterized in that a detachable partition plate (4) is arranged between the cable chamber (1) and the mounting chamber (2) and provided with line through holes (5), wire collectors (6) are arranged in the cable chamber (1), each wire collector (6) comprises a cylindrical barrel (61), wire clamping grooves (62), fixing parts (63) and air vents (64), the upper ends of the cylindrical barrels (61) are provided with the wire clamping grooves (62), the fixing parts (63) are arranged at the lower ends of the cylindrical barrels (61), and the cylindrical barrels (61) are provided with the air vents (64). The fixed power distribution cabinet has the advantages of simplicity in operation, effectiveness in heat radiation, convenience in maintenance and the like.

A water spraying unit of air conditioner is prepared as setting water storage box and air pump in separated machine body, connecting one end of water storage pipe to water storage box and sealing another end of it, setting multiple capillary tube with opening being extended upwards on water storage pipe in interval way, connecting one end of wind pipe to air pump and sealing another end of it, setting air blowing holes on wind pipe in interval way, setting said air blowing holes to be one by one corresponding relation to said capillary tubes and setting water storage pipe and wind pipe between blade and condenser.

A thermal removal method of the PCIE equipment comprises the steps that after a power-off instruction of the PCIE device is received, a first GPIO in a PCH is set to be a low level; when it is detected that the first GPIO is at a low level, ACPI Hotplug interruption is triggered; when the ACPI Hotplug interruption occurs, the occupied resources of the PCIE equipment are released; and when the release of the occupied resources of the PCIE device is finished, a removal instruction is generated so as to remove the PCIE equipment. In the whole thermal removal process, only the power-off instruction needs to be sent to the server, when thermal removal of the PCIE devices is carried out in batches, the thermal removal efficiency of the PCIE devices is greatly improved, and the maintenance of a server cluster is facilitated. The invention also provides a thermal removal system of the PCIE equipment, a computer readable storage medium and a server, which have the above beneficial effects.

The invention relates to the technical field of target bodies driven by accelerators, in particular to a high-power neutron generation target for driving an accelerator, which has an efficient cooling function and a temperature and beam spot monitoring function. The neutron generation target comprises a target material layer, a particle migration layer, a micro-channel substrate layer and a cover plate layer which are sequentially connected in an attached mode to form an integrated multi-layer structure target body, and a plurality of thermocouple assemblies are arranged on the target body. A plurality of rows of fins are machined on the surface of the micro-channel substrate layer, and a micro heat dissipation channel is formed between every two adjacent fins. According to the invention, the problem that the infrared imaging camera cannot work for a long time in a high-dose radiation environment around the target body is solved; the neutron generation target is cooled by using a micro heat dissipation channel structure, so that the shape of a proton beam spot can be predicted, and the temperature of the target material can be monitored; the uniformly distributed thermocouples are adopted, and the distances from the thermocouples to the surface of the target material are consistent, so that a uniformly measured temperature field is formed, and beam spot shape prediction is facilitated.

The invention relates to the technical field of heat dissipation equipment, in particular to an evaporator, a condenser and a loop heat pipe. The evaporator comprises a shell and a heat exchange evaporation layer; a liquid supplementing cavity, an evaporation cavity and a mounting cavity are formed in the shell, and a liquid inlet communicated with the liquid supplementing cavity and an air outlet communicated with the evaporation cavity are formed in the shell; the heat exchange evaporation layer is arranged in the installation cavity, and the liquid supplementing cavity and the evaporation cavity are separated through the heat exchange evaporation layer. The condenser comprises a condensation body, a condensation cavity is formed in the condensation body, and the condensation body is provided with a heat dissipation side wall corresponding to the condensation cavity; the condensation body is provided with an air inlet channel and a liquid outlet channel, an inlet of the air inlet channel and an outlet of the liquid outlet channel penetrate through the outer wall of the condensation body, and an outlet of the air inlet channel and an inlet of the liquid outlet channel communicate with the condensation cavity. The loop heat pipe comprises the evaporator and a condenser. According to the evaporator, the condenser and the loop heat pipe, gas-liquid separation is achieved, the resistance for supplementing a liquid working medium into the liquid supplementing cavity is effectively reduced, and it is ensured that a heat source is continuously and stably cooled.