230results about How to "Reduce cooling requirements" patented technology

The invention discloses an energy-saving purification device based on internal circulation, an air conditioning system and a control method of the air conditioning system. The energy-saving purification device comprises a filtering and adsorbing unit which is used for adsorbing CO2; an air heating unit which is used for heating air entering the filtering and adsorbing unit so as to release CO2 inthe filtering and adsorbing unit; an air pressurizing unit which is communicated to the filtering and adsorbing unit and is used for increasing the static pressure of the air entering the filtering and adsorbing unit; and a switching unit, wherein the rear end of the air outlet end of the filtering and adsorbing unit is connected to the switching unit, and the switching unit is connected to a purification air outlet pipe and an exhaust pipe. According to the energy-saving purification device, the CO2 concentration of indoor air can be effectively reduced, the fresh air volume can be reduced, and the energy consumption of an air conditioning system can be reduced, so that the designed cold/heat load of the air conditioning system can be reduced, and as the fresh air volume required by a building is reduced, the cold demand of the air conditioning system can be reduced, and the manufacturing cost of the whole air conditioner is reduced.

The invention provides a plug-in hybrid electric vehicle heat management system. Relative independent systems in a plug-in hybrid electric vehicle such as an engine cooling system, a motor cooling system, a battery cooling system, a battery controller cooling system are integrated into an overall heat management system by an integrated heat exchanger. The integrated heat exchanger serves as a coreheat exchange structure, heat exchange of engine oil, engine cooling liquid, a battery cooling system, a battery controller cooling system and a motor cooling system is implemented by the aid of multiple cooling cycle paths, and optimal operating temperatures of systems are achieved. According to the system, waste heat generated by running of an engine, discharging of a battery and heat dissipation of the motor is sufficiently utilized, energy of the systems in a whole vehicle is reasonably cycled and utilized, so that energy is saved, and the efficiency of the whole vehicle heat management system is improved.

The invention relates to a starting method for a current transformer, and is applied to the current transformer of which a main circuit is formed by sequentially connecting a direct current (DC)/DC conversion circuit and a DC/alternating current (AC) conversion circuit. A DC bus capacitor is arranged between the output end of the DC/DC conversion circuit and the input end of the DC/AC conversion circuit. The method comprises the following steps of: connecting an AC power grid with the DC end of the main circuit by a current limiting resistor, charging the DC bus capacitor by utilizing the AC power grid, regulating the main circuit to make the amplitude and phase of the output voltage of the main circuit are the same as those of the voltage of the AC power grid to meet grid connection requirements, and connecting the AC end of the main circuit to the AC power grid. By the starting method for the current transformer, not only relatively lower starting current is ensured to make radiation designing easier to realize, but also synchronous grid connection is realized to make grid connection impact current relatively lower; and the method is particularly applied to the starting of a DC double-channel or multi-channel current transformer.

The invention relates to the field of heat dissipation, in particular to a soaking plate and a manufacturing and application method thereof. Heat generated by a heat source can be transferred to an external environment through a radiator more quickly to lower the working temperature of the heat source, so that the heat source can be operated more safely, efficiently, stably and enduringly, in particular for a graphics card with high heating quantity and a chip of a calculation accelerating card. The soaking plate enhances the efficiency of a liquid sucking core, can suck more working mediums, enables the working mediums to flow back smoothly, and meanwhile, improves the overall structural intensity of the liquid sucking core and the socking plate to prevent deformation of the soaking plate; the soaking plate greatly improves the heat dissipating performance through more condensers extending from the side surface, and is provided with a sealing piece mounting structure at the bottom for matching with a sealing piece to use; and as the heat can be transferred from the heat source to the radiator through liquid-state metal, when the use efficiency of the radiator is improved, the harm caused by leakage of the liquid-state metal is prevented, and the protecting effect on the heat source and the radiator is achieved.

The invention discloses a compensation control circuit of a direct current motor, comprising a speed-measuring circuit, a speed instruction conditioning circuit, a speed instruction control circuit and a driving buffering brake circuit. The speed-measuring circuit acquires signals U1 and U2 of voltage to ground of two ends of the direct current motor, and generates a speed-measuring signal Uv. The speed instruction conditioning circuit rectifies the voltage of the speed instruction signal into unipolar level, outputs a control signal of positive and negative rotation of the motor and biased-amplifying the rectified speed instruction signal into a speed instruction signal Vg conforming the range specification of the speed-measuring signal Uv. The speed instruction control circuit comprises an error amplifier and a proportional integral circuit; the error amplifier amplifies error comparison between the speed-measuring signal Uv and the speed instruction signal Vg, and generates a pulse signal for controlling a semiconductor switch device; and the proportional integral circuit controls the error amplifier. The semiconductor switch device of the driving buffering brake circuit is controlled by the pulse signal and is used for driving buffering brake direct current motor.

The invention provides a low-pressure exhaust gas recirculation system for a diesel engine. In the system, exhaust gas is led out after a turbine unit and before post-treatment equipment, and is cooled through a cooler; the cooled exhaust gas is mixed with high-pressure fresh air flowing out after a gas compressor in a dedicated jet device; and mixed gas of the fresh air and the exhaust gas flows through an intercooler and enters a combustion chamber of an engine. Compared with the conventional high-pressure EGR ( Exhaust Gas Recirculation) system and low-pressure EGR system, the low-pressure exhaust gas recirculation system has the characteristics of more uniform EGR distribution, good transient (dynamic) character, reduced cooling requirement, damage prevention for the gas compressor, post-treatment burden reduction and service life prolonging of the post-treatment equipment.

The invention provides an image data processing method. The method comprises the following steps of: obtaining a video flow by a terminal through a monitor camera and extracting a target image frame comprising a target object from the video flow by utilizing a marginalized calculation manner; and obtaining attribute information of the target object by a cloud and determining text description information of the target image frame according to the obtained attribute information. By adoption of the marginalized calculation and cloud calculation combined image data processing method, the problem that video images are inconveniently to retrieve is optimized through extracting text description information of video images; and meanwhile, the requirement for network bandwidth is reduced via structured data transmission, so that the calculation and analysis abilities of systems are enhanced.

The invention discloses a refrigerator and a speed control system and method of a condenser fan of the refrigerator. The speed control system of the condenser fan comprises a controller, a compressor rotational speed detection circuit, temperature sensors inside and outside the refrigerator and a condenser fan rotational speed control circuit, wherein the rotational speed of a compressor is detected by the controller through the compressor rotational speed detection circuit, and the temperature inside the refrigerator and the ambient temperature are acquired by the temperature sensors; and the rotational speed of a condenser fan is controlled by the condenser fan rotational speed control circuit. The controller provided by the invention can control the rotational speed of the condenser fan according to the ambient temperature, the temperature inside the refrigerator and the rotational speed of the compressor, accordingly, when more heat is dissipated in a condenser, the rotational speed of the condenser fan is improved to meet the heat dissipation need; and when less heat is dissipated in the condenser, the rotational speed of the condenser fan is reduced to meet the heat dissipation need, and reduce energy consumption and noise.

The invention discloses a fuel cell tramcar heat comprehensive utilization method and a fuel cell tramcar heat comprehensive utilization device, belongs to the technical field of fuel cell application, and solves the problem of fuel cell tramcar heat comprehensive utilization. A cooling fluid outlet pipeline of a fuel cell is connected with a cooling circulating pump; a cooling circulating pump outlet pipeline is connected with a cooling fluid inlet of a radiator group; the cooling fluid outlet of the radiator group is connected with a cooling fluid inlet of the fuel cell; a fresh air preheater is arranged between a fresh air filter and an air return duct; a heating radiator is arranged in a carriage; a main radiator is arranged on the roof of a tramcar; the heating radiator and the fresh air preheater supply heat for the carriage in winter, and the remaining waste heat of the fuel cell is born by the main radiator; an exhaust duct radiator is arranged in the carriage, waste exhaust is taken as a cold source in summer, and the remaining waste heat of the fuel cell is born by the main radiator; under the working conditions in spring and autumn transition seasons, the main radiator bears all remaining waste heat release of the fuel cell. The fuel cell tramcar heat comprehensive utilization method and the fuel cell tramcar heat comprehensive utilization device are mainly used for the fuel cell tramcar heat comprehensive utilization.

Natural gas (NG) fueled auxiliary power source, combined with a high-pressure hydraulic pump supplying hydraulic fluid to a secondary hydraulic propulsion unit mounted (hung) on the rear (aft) of the wind generator main shaft provides axial force (torque) to the mainshaft via a ring and pinion set and planetary gearbox, or scaled turbine propulsion unit equipped with shaft speed sensors that have been calibrated to minimum/maximum desired main shaft (electrical generator) speed and that can engage and spin the main shaft attached to the electrical power generator on demand when there is insufficient wind to do so.

The invention discloses an MOCVD (metal organic chemical vapor deposition) reactor and a support shaft for the MOCVD reactor. The problems that an inner ring heater is low in power utilization ratio, a load of the surface of the inner ring heater is high, and a cooling requirement below the support shaft is high due to the fact that the available support shaft is large in heat conductivity coefficient, and the heat transmission capacity of a slide glass disk to the support shaft is great are solved. The support shaft for the MOCVD reactor comprises a support shaft bottom, a support shaft middle and a support shaft top, wherein the support shaft top, the support shaft middle and the support shaft bottom are fixedly connected; gas channels are communicated among the support shaft bottom, the support shaft middle and the support shaft top; the support shaft top is frustum-shaped, and is provided with a connecting ring; a fixed cover plate is mounted at the top of the connecting ring; and a heat insulation cover plate is mounted at the top of the fixed cover plate. According to the MOCVD reactor and the support shaft, the service life of the inner ring heater is prolonged; the normal working time of equipment is prolonged; the complete power is reduced; and an energy-saving effect is improved.

The invention discloses a double-region device for efficiently recovering yellow phosphorus combustion heat. The device comprises a support, a sufficient combustion region component, a convective heat transfer region component and a steam drum sequentially from bottom to top. One end of a sufficient combustion region down pipe is communicated with the steam drum while the other end of the sufficient combustion region down pipe is communicated with a lower header of the sufficient combustion region component. One end of a sufficient combustion region sufficient combustion region steam guide pipe is communicated with the steam drum while the other end of the sufficient combustion region steam guide pipe is communicated with an upper header of the sufficient combustion region component. One end of a convective heat transfer region down pipe is communicated with the steam drum while the other end of the convective heat transfer region down pipe is communicated with a cooling water inlet pipe of the convective heat transfer region component, one end of a convective heat transfer region steam guide pipe is communicated with the steam drum while the other end of the onvective heat transfer region steam guide pipe is communicated with a steam outlet pipe in the convective heat transfer region component, and a lower head of the sufficient combustion region component is connected with the support. The device is capable of achieving efficient recovery of the yellow phosphorus combustion heat, the theoretical recovery rate can reach more than 75%, energy saving and emission reduction of phosphoric-acid production by a hot method are promoted, and the device has wide application prospect in phosphoric-acid production by a hot method.

The invention discloses a turbocharging system for an internal combustion engine, comprising the internal combustion engine which is provided with an evaporator capable of generating high-temperature and high-pressure water vapor on an exhaust pipe. The water vapor is guided into the turbine end of a supercharger by a pipeline to drive impellers of the turbo machine to rotate at a high speed and drive a coaxial air compressor to compress the air from an air filter, and the supercharged air is passed through an intake manifold of the internal combustion engine to enter the internal combustion engine. The water vapor discharged by the turbo machine is guided into a condenser that can condense the high-temperature and high-pressure water vapor into the water closed to the boiling point, and then is flowed back to the evaporator to circulate continuously. Because the water vapor is generated to drive the turbo machine and drive the coaxial air compressor to compress the air from the air filter, the exhaust back pressure can not be increased, and power of the internal combustion engine also can not be consumed. And an operating temperature is much lower, and a cooling requirement is lower, thereby compared with the exhaust turbocharging machine, the cost is reduced a lot; and the turbocharging system can be used together with the exhaust turbocharging machine.

The invention relates to a soft start circuit of a converter. The main circuit of the soft start circuit comprises a DC (direct current)/DC converting circuit, a DC/AC (alternating current) converting circuit and a paralleling switch, wherein the DC/DC converting circuit comprises one or more mutually independent DC channels, at least one DC channel is a chopper DC channel on which a DC chopper circuit is arranged; the input end of the DC channel is a load connecting end, the output end of the DC channel is provided with a DC bus capacitor for forming the output end voltage; one or more soft start branches provided with soft start switches are connected between the load connecting end and the power supply connecting end of the paralleling switch; at least one of the one or more soft start branches is provided with a soft start resister, and the at least one soft start branch provided with the soft start resister corresponds to the chopper DC channel. By using the soft start circuit of a converter, the soft start current is small, the thermal design is easier, the paralleling impact current is small, and the soft start circuit can be widely used in the charging process of a DC load.

The invention discloses an encapsulating structure and an encapsulating method of a combiner. The encapsulating method comprises the following steps of: 1, encapsulating a manufactured combiner product on a substrate and fixing optical fibers at the two ends of the substrate by using primary glue; 2, putting the substrate on which the combiner is arranged into a circular pipe and sealing the two ends of the circular pipe by using secondary glue; and 3, encapsulating the circular pipe into a metal box by using third glue, making an input optical fiber and an output optical fiber of the combiner extend out of the two ends of the metal box and putting gum caps into the two ends of the metal box so as to protect the optical fibers. The encapsulating method has a simple process. The encapsulated combiner has the characteristics of high long-term working stability, high radiating reliability and the like.

The invention provides a cooling and conveying device, and belongs to the technical field of conveying devices. The cooling and conveying device comprises a tank, a spindle, a driving mechanism, a feed inlet, a discharge outlet and a cooling mechanism. Advancing blades are intermittently arranged on the spindle and comprise cavity matrixes and spiral blades, the spiral blades are arranged on the cavity matrixes, the cooling mechanism comprises a water inlet pipe, communicating pipes and a water outlet pipe, the water inlet pipe, the communicating pipes and the water outlet pipe are arranged in the spindle, and the water inlet pipe, the cavity matrixes and the water outlet pipe are sequentially communicated with one another via the communicating pipes. The cooling and conveying device has the advantages that the cooling and conveying device is novel in structure and reasonable in design and can be applied to mixing, conveying and cooling expanded ammonium nitrate explosive, the expanded ammonium nitrate explosive can be sufficiently mixed, products are good in free-running property and stable in quality, and good cooling effects can be realized.

The invention discloses a control method of a DC-DC bidirectional converter. The method is applied to the DC-DC bi-directional converter. According to the charging and discharging requirements of a first power supply and the relation between the voltage of the first power supply and the voltage of a second power supply, the DC-DC converter is controlled in different time sequences. Therefore, thebidirectional conversion is realized. Meanwhile, the current of a whole-process inductor is continuous. As a result, the bidirectional dual-conversion of a high voltage capable of falling as well as rising can be realized.

According to one embodiment, a method for improving heat transfer between a cold finger of a cryogenic cooler and a Dewar includes forming an annulus between the cold finger of the cryogenic cooler and the Dewar by inserting the cold finger into the Dewar. The cold finger has a first end and a second end. The method also includes inhibiting the formation of convective currents within the annulus in a direction between the first end and the second end. According to another embodiment of the invention, the cooling system includes a cryogenic cooler that includes a cooling section operable to generate cooling fluid and a cold finger operable to receive the cooling fluid. The cooling system also includes a Dewar formed with a void region coupled to an infrared detector. The cold finger is positioned within the void region of the Dewar creating an annulus. The cooling system also includes at least one obstruction disposed within the annulus and operable to inhibit the formation of convective currents in a direction along a length of the cold finger.

The invention provides a zirconium-based amorphous alloy. The composition of the zirconium-based amorphous alloy is as shown in ZrCuAl<c>Ni<d>Ti<e>M<f>, wherein a, b, c, d, e and f are corresponding atomic percents of elements in the zirconium-based amorphous alloy, a is no less than 50 and no more than 55, b is no less than 15 and no more than 30, c is no less than 15 and no more than 24, d is no less than 0.1 and no more than 9, e is no less than 0.1 and no more than 5, f is no less than 0.1 and no more than 5, a+b+c+d+e+f is no more than 100, and M is one or more selected from a group consisting of Sc, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. The invention also provides a method for preparing the zirconium-based amorphous alloy.