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44results about How to "Improve heat removal effect" patented technology

Refrigerant system with economizer, intercooler and multi-stage compressor

A refrigerant system is provided with a multi-stage compression system. An intercooler is positioned between at least two compression stages to cool a refrigerant, by heat transfer interaction with a secondary fluid, after it has been compressed in the lower compression stages to some intermediate pressure. The intercooler enhances refrigerant system performance, improves compressor reliability, and extends operational envelope. Further, at least one economizer circuit is incorporated into the refrigerant system that returns the economized refrigerant flow at the location between at least two compression stages.
Owner:CARRIER CORP

UV module shutter extrusion with internal cooling fins

A shutter having at least one coolant passageway, a plurality of ribs extending internally into the coolant passageway. The shutter may be a component of a shutter assembly in a UV module for curing UV-sensitive ink. These ribs may improve heat removal from a UV module in which the shutter is installed. Another advantage is that the shutter of this invention may have a lower weight with consequent advantages of lighter weight, reduced manufacturing costs, and reduced drive train wear.
Owner:AIR MOTION SYST

Method of manufacturing annular molding

A method of manufacturing an annular material includes: a forging process of making a discoid forged material by forging an alloy material; and a ring rolling process of making an annular material by performing ring rolling on an annular intermediate made by forming a through-hole in the forged material. In the forging process, hot forging which achieves an absolute value εθ1 of a strain in a circumferential direction of the forged material that is greater than or equal to 0.3, an absolute value εh of a strain in a height direction of the forged material that is greater than or equal to 0.3, and a ratio εh / εθ1 between the absolute values of the strains that is in a range of 0.4 to 2.5 is performed at least two or more times.
Owner:MITSUBISHI MATERIALS CORP

Induction heating cooking equipment

The present invention provides an induction heating cooker having a cooling mechanism for heating metal cooking pot by supplying high frequency current to heating winding, a circuit substrate capable of cooling the induction heating cooker in high frequency with low blast volume and a heating winding arranged upside of the same, and kitchen condition supplying low noise. The invention comprises a heating winding arranged under the top plate for heating the cooking pot; a circuit substrate for supplying high frequency current to the heating winding; a fan device for supplying cooled air; a liquid cooling system having heat exchanger operating heat exchange with said electronic member of said circuit substrate with liquid and air; and air passage guiding the air supplied to said circuit substrate from said fan device to at least said heat exchanger.
Owner:HITACHI APPLIANCES INC

Air diverter for vehicle cooling system

The invention relates to an air diverter for a vehicle cooling system. There is a need for an improved vehicle cooling system. An air diverter is provided for a vehicle cooling system having a radiator, a fan for moving air through the radiator and a cooling unit positioned in front of the radiator with respect to air moving through the radiator. The fan is surrounded by a fan shroud. The air diverter includes a collector and a conduit. The collector is positioned between the cooling unit and the radiator. The collector receives a portion of air which passes through the cooling unit. The conduit extends around an edge of the radiator and communicates air from the collector to the interior of the fan shroud while bypassing the radiator.
Owner:DEERE & CO

Multi-loop coupled heat conduction passive waste heat discharging system test simulation device

The invention discloses a multi-loop coupled heat conduction passive waste heat discharging system test simulation device which comprises a reactor simulation body and loop system, a passive waste heat discharging system and a seawater system, wherein the reactor simulation body and loop system is used for simulating a thermodynamic state of a reactor in a shut-down or working accident state; thepassive waste heat discharging system is used for discharging heat generated by the reactor simulation body and loop system, and transmitting the heat to the seawater system through an emergency condenser; the seawater system is used for simulating seawater input and bringing away and discharging the heat of the emergency condenser. According to the multi-loop coupled heat conduction passive wasteheat discharging system test simulation device, in a process that steam generated on a secondary side of a waste heat discharging heat exchanger is discharged into the emergency condenser for coolingthrough a natural circulating pipe to form under-heating water, a waste heat discharging loop control valve is added, so that waste heat discharging situations under various working conditions can besimulated; the waste heat discharging loop control valve can be used for adjusting different discharging resistances.
Owner:NUCLEAR POWER INSTITUTE OF CHINA

Heat spreader with vapor chamber and method of manufacturing the same

A heat spreader (100) includes a metal casing (60) formed by electrodeposition and defining a vapor chamber (40) therein, and a mesh (12b) lining an inner surface of the metal casing. A method for manufacturing the heat spreader includes: providing a core (60a) having a mesh layer (12a) including a plurality of pores and a filling material (14) filled in the pores of the mesh layer and a major space enclosed by the mesh layer; electrodepositing a layer of metal coating (60b) on an outer surface of the core; removing the filling material from the coating layer and the pores of the mesh layer; and filling a working fluid into the coating layer and hermetically sealing the coating layer to thereby obtain the heat spreader with therein a wick structure (12) formed by the mesh layer and the vapor chamber formed by said major space.
Owner:HON HAI PRECISION IND CO LTD +1

Efficient passive spent fuel pool cooling system adopting jet technology

The invention provides an efficient passive spent fuel pool cooling system adopting a jet technology, and belongs to the field of nuclear power plant safety. The system comprises a jet subsystem, a heat exchanger inlet pipe section, a water space heat exchanger, a gas space heat exchanger, a heat exchanger outlet pipe section, a chimney and related pipeline values. When the temperature of a spentfuel pool is higher than a warning value, the system puts into operation automatically, air outside a fuel plant is injected through high pressure gas ejected by a high pressure gas storage tank in the jet subsystem, or water inside a water storage tank and air outside the fuel plant are injected at the same time, and powerful driving force is provided for a cooling loop while the total quantity of a cooling fluid is increased. When the water or gas inside the subsystem in the jet subsystem is used up, the system still can form passive natural circulation in virtue of the density difference ofair in cold and hot sections, and long-term cooling is carried out on the spent fuel pool, so that effectively passive cooling of the spent fuel pool in 3 to 6 days or even longer time can be guaranteed in accident conditions and when an external power supply is lost.
Owner:HARBIN ENG UNIV

Power transfer unit

A power transfer unit includes a non-parallel gear set and a parallel gear set integrally packaged within a housing. The housing includes an extension portion that connects the power transfer unit to a transmission assembly. The extension portion is formed having a structural web with one or more cavities. These cavities include inner cavities that define a portion of the interior volume of the housing and may also include outer cavities that open to the outer side of the housing. The web between cavities provides structural rigidity for the power transfer unit, while the cavities minimize the weight of the power transfer unit.
Owner:AUTOMOTIVE COMPONENTS HOLDINGS

Heat Pipe Anchor Tubes for High Side Heat Exchangers

ActiveUS20180224173A1Improve abilitiesIncreasing heat rejection efficiency and efficiencyCompression machinesEvaporators/condensersEngineeringRefrigerant
In a particular embodiment, a cooling system contains a compressor configured to compress a refrigerant, a high side heat exchanger configured to remove heat from the refrigerant, and a load configured to cool a space using the refrigerant. The high side heat exchanger has a frame and one or more refrigerant tubes extending through the frame, wherein each refrigerant tube has at least one cavity configured to allow the refrigerant to flow through the refrigerant tube. The high side heat exchanger is configured to remove heat from the refrigerant as the refrigerant flows through the one or more refrigerant tubes. The high side heat exchanger also has one or more heat pipes contacting the frame that, collectively, bear at least 25% of the weight of the one or more refrigerant tubes, are coupled directly to the frame, and are configured to remove heat from the flowing refrigerant.
Owner:HEATCRAFT REFRIGERATION PRODS

Liquid-cooling heat dissipation device for smart phone

The invention discloses a liquid-cooling heat dissipation device for a smart phone. The device comprises a liquid-cooling radiator, a small water pump, a water inlet pipe, a water outlet pipe, a matching joint, a water tank and an auxiliary heat conduction material. The liquid-cooling radiator comprises a spring buckle, fins, a cooling fan, a porous shell, a liquid-cooling pipe and a heat conduction metal plate, and the auxiliary heat conduction material is installed between the liquid-cooling radiator and the heating back face of the smart phone. One end of the water inlet pipe and one end of the water outlet pipe are connected to the liquid-cooling radiator, and the other end of the water inlet pipe and the other end of the water outlet pipe are connected to the water tank. The water outlet pipe is connected with the matching joint on the water tank through the small water pump. The device is simple in structure, convenient to use, high in adjustability and wide in adaptability, and effectively solves the heat dissipation problem of the smart phone.
Owner:陈建聪

Computer heat rejection system and computer

The invention discloses a computer heat rejection system and a computer. The system and the computer include an upper cover, supporting fixed feet and second dust-proof nets. A handle is fixed at a front end of the upper cover. An optical-drive socket is arranged at an underside of the handle. A main body is fixed at an upper end of the supporting fixed feet. Moving pulleys are mounted at an underside of the main body. A first dust-proof net is mounted at an underside of the upper cover. A water tank is arranged at an underside of the first dust-proof net. A water circulation pipe is connectedwith an outside of the water tank. Heat dissipation fans are mounted at insides of the second dust-proof nets. A second moving plate is arranged at an outside of the heat dissipation fans. An underside of the second moving plate is connected with the main body through a rotation pin. A moving sub-plate is fixed at an outside of the main body. According to the computer heat rejection system and the computer, the water tank, a water pump, a water cooling block and the water circulation pipe are arranged, cooling work can be carried out on an inside of the computer, the second dust-proof nets and the heat dissipation fans are also arranged, heat rejection and ventilation performance of the computer can be guaranteed, and service life of the computer can also be increased.
Owner:RIZHAO POLYTECHNIC

Liquid cooler and method of its manufacture

A liquid cooler including a heat sink. A hollow body is produced by extrusion having at least one flat outer surface between a first and a second end. At least one elongated cavity passes through the body from the first to the second end. The hollow body includes a plurality of parallel fins directed into and along the at least one cavity. An insert housed in the at least one cavity connects the tops of the fins in a fluid-tight manner thereby forming liquid channels for a coolant liquid between the insert and the hollow body. A lid is attached at both ends of the hollow body for forming a liquid cooling system.
Owner:PROFILES SHANGHAI

Auxiliary condenser

The invention discloses an auxiliary condenser. A cooling fin is arranged on a compression pipeline, higher than or horizontally coplanar with a condenser, between a compressor and the condenser and is communicated with a spare water pipe; and a sunshade device is arranged on the upper part of the spare water pipe. The auxiliary condenser provided by the invention has the effects of reducing the load of the condenser, increasing the refrigeration efficiency of a refrigeration system, saving energy and guaranteeing the long-term high-efficiency operation of a system; the sunshade device not only can be used for sunshading but also is beneficial to cold-hot air convection and can be sued for reducing the temperature of the cooling fin by using rainwater; due to the design of the spare water pipe, when the ambient temperature is overhigh and the condenser works difficulty and is bound to operate continuously, a heat removal effect of the auxiliary condenser can be enhanced by opening the spare water pipe; in addition, the auxiliary condenser has the advantages of simple structure, convenience in use, low manufacture cost and suitability for large-range popularization and application.
Owner:张鹏博

Dustproof vending machine

The invention provides a dustproof vending machine, which comprises a box body. A selling bin and an electrical bin are arranged in the box body, and are respectively provided with a selling bin door and an electrical bin door; an automatic replenishment device and a dust collection device are arranged in the selling bin; the automatic replenishment device comprises a rail, a telescopic reverse turning bed, an inductive control device, a transmission device and an air cylinder; one end of the rail is fixedly connected with the top part of the selling bin; a discharge device is arranged between the selling bin and the selling bin door; an anti-theft plate is arranged on the bottom end of a goods aisle; a money storage warning device is arranged in the electrical bin; the electric bin door is sequentially provided with an automatic coin slot, a slot card inducting zone and a discharge hole from top to bottom; the dust collection device comprises a filter rack; a filter channel is arranged in the filter rack; a dust screen is arranged in the filter channel and is distributed in the filter channel in a Z shape. The dustproof vending machine provided by the invention has the beneficial effects of simple structure, convenience in maintenance, low cost, and manual labor saving.
Owner:TIANJIN ZHIDING CHUANGLIAN INFORMATION SCI & TECH

Noise reduction equipment for dry-type transformer of workshop

The invention relates to the technical field of transformer application, in particular to noise reduction equipment for a dry-type transformer of a workshop. The equipment comprises a shell, a temperature measurement mechanism and an electromagnetic mechanism, and the shell is of a box structure with a cover and comprises a sound insulation layer; an air exchange hole which is through is formed inthe side wall of the shell; the temperature measurement mechanism comprises a temperature measurement bottle, a temperature measurement rod, a wind baffle and a magnet block, and the wind baffle cancompletely cover or completely open the air exchange hole; the electromagnetic mechanism comprises a magnet rod, a solenoid, a rectifier and a metal rod. According to the noise reduction equipment, through a comprehensive effect of the temperature measurement mechanism and the electromagnetic mechanism, after the heat dissipation demand of the dry-type transformer and the relative intensity of thenoise reduction demand are compared, the exposure area of the air exchange hole is automatically adjusted, and the noise reduction demand and air exchange and cooling demand of the transformer can bemet.
Owner:宁波隆锐机械制造有限公司

Mobile phone battery cover waterproof soft cushion

The invention discloses a waterproof soft cushion for a mobile phone battery cover. The damping plate comprises a base plate layer, side pads, silica gel pads, cushioning pads, top grooves, matching holes, gaskets, waterproof strips, moisture absorption layers, inner grooves, bottom grooves and damping grooves. An inner groove is formed in the inner side of the substrate layer; waterproof strips are evenly attached to the interior of the inner groove. a moisture absorption layer is adhered to the outer side of the waterproof strip in the inner groove; a bottom groove is formed in the side edgeof the port of the inner groove in the inner side of the substrate layer; the waterproof structure and the heat dissipation structure of the mobile phone battery cover waterproof soft cushion can bepartially replaced; when the device fails, the whole device does not need to be replaced; materials are saved, meanwhile, the battery cover is extruded and attached to the side pads and the cushioning pads during installation to achieve the damping protection effect, the waterproof strips achieve the good waterproof effect, the moisture absorption layer absorbs moisture in a machine body to guarantee normal use of the battery, and the silica gel pad achieves the heat conduction effect to improve the heat dissipation effect of the battery and is suitable for all mobile phones and high in universality.
Owner:NINGGUO QIANHONG ELECTRONIC CO LTD

Ventilation and lighting module

InactiveCN110792234AImprove heat removal effectHigh efficiency light collection effectUsing daylightRoof covering ventilationsPhysicsEngineering
The invention discloses a ventilation and lighting module that comprises a ventilation hole and a first lighting cover; the ventilation hole comprises an upper opening and a lower opening opposite tothe upper opening, the lower opening has a first diameter, the upper opening has a second diameter, and the distance between the upper opening and the lower opening has a height smaller than the firstdiameter. The first lighting cover fixedly covers one side of the upper opening of the ventilation hole, and an exhaust channel is formed between the first lighting cover and the ventilation hole relative to the lower opening; the first lighting cover has a third diameter, and the optimal heat dissipation, ventilation and lighting effects are achieved through the size design of the first diameter, the second diameter and the third diameter.
Owner:BIG LIGHT OPTICS CO LTD

Noise reduction equipment for workshop dry-type transformers

The invention relates to the technical field of transformer application, in particular to a noise reduction device for dry-type transformers in workshops. It includes a housing, a temperature measuring mechanism and an electromagnetic mechanism. The housing is a box structure with a cover, and the housing includes a sound insulation layer; the side wall of the housing is provided with through ventilation holes; the temperature The measuring mechanism includes a temperature measuring bottle, a temperature measuring rod, a windshield and a magnet block, and the windshield can completely cover or completely open the ventilation hole; the electromagnetic mechanism includes a magnet rod, a solenoid, a rectifier and a metal rod. Through the comprehensive function of the temperature measuring mechanism and the electromagnetic mechanism, the present invention automatically adjusts the exposed area of ​​the ventilation hole after measuring the relative strength of the heat dissipation requirement and the noise reduction requirement of the dry-type transformer, which can take into account both the noise reduction requirement and the ventilation requirement of the transformer. cooling needs.
Owner:宁波隆锐机械制造有限公司

Driving device for relay and relay with driving device

The invention discloses a driving device for a relay, and belongs to the technical field of relays. The device comprises a push rod and a movable iron core; a support plate is fixedly mounted at the top of the push rod; a pair of moving contacts is fixed at the top of the support plate; a movable iron core is arranged at the bottom of the support plate; a supporting plate is transversely arrangedbelow the support plate; a pair of guide rods is integrally formed at the bottom of the supporting plate. The invention further provides a relay. The relay comprises the driving device. The driving device can be matched with a cavity formed in an upper shell and a lower shell in an up-and-down moving manner; a heat dissipation pipeline is fixed to the top of the upper shell and extends into the upper shell; a positioning guide piece is fixed at the bottom of the lower shell; and a driving coil is arranged in the positioning guide piece. The driving device is movably matched with the upper shell and the lower shell; the heat dissipation pipeline is fixed to the top of the upper shell. After an existing relay is used for a period of time, a push rod is difficult to pull in and release, and heat is difficult to discharge in time. With the relay and the driving device adopted, the problems of the existing relay are solved.
Owner:阜阳中骄智能科技有限公司

Passive steel containment heat export system

The invention belongs to the technical field of nuclear power plant reactor safety systems, and particularly relates to a passive steel containment heat export system, which is characterized in that a cooling cover (7) is arranged on the side wall of a containment (1) of a reactor and forms a closed annular cavity (5) with the containment (1), a cooling water loop is arranged on the cooling cover (7), the cooling water loop can inject cooling water into the annular cavity (5) from the bottom of the cooling cover (7) in a passive mode, the cooling water absorbing heat in the annular cavity (5) can flow back into the cooling water loop from the top of the cooling cover (7) in a passive mode, and the containment (1) is made of stainless steel. According to the invention, dependence of a traditional active safety system on a safety-level power supply is eliminated, high natural circulation capacity and heat removal capacity are achieved, and the capacity of relieving accident consequences for a long time without intervention after an accident is provided.
Owner:CHINA NUCLEAR POWER ENG CO LTD

Tightly-clamping anti-loose condenser spacer

InactiveCN110118454AInhibit sheddingAvoider looseEvaporators/condensersEngineering
The invention discloses a tightly-clamping anti-loose condenser spacer. The tightly-clamping anti-loose condenser spacer comprises a spacer body. Anti-loose protrusions are symmetrically arranged at the periphery of the spacer body. The two anti-loose protrusions protrude out of the spacer body. An area formed in the inner side of each anti-loose protrusion serves as a clamping groove. A flow collecting pipe is connected to the inner sides of the clamping grooves in a clamped manner. The spacer body and the anti-loose protrusions are integrally connected. Heat dissipation through openings aresequentially formed in the outer wall of one side of the flow collecting pipe. Semiring-shaped clamping openings are formed in the outer wall of the other side of the flow collecting pipe in a spacedmanner. The cross sections of the semiring-shaped clamping openings are arranged to be matched with the spacer body. The width of each clamping groove is arranged to be matched with the external crosssection of the flow collecting pipe. According to the tightly-clamping anti-loose condenser spacer, by means of the spacer body, the anti-loose protrusions, the flow collecting pipe, the clamping grooves and the semiring-shaped clamping openings, the problem that a condenser spacer is likely to deform, so that the spacer is likely to fall off or be loosened in the using process is solved.
Owner:广州全正汽车配件有限公司

Air guide ring and outdoor unit of air conditioner

The invention discloses an air guide ring and an air conditioner outdoor unit, which relate to the technical field of refrigeration devices. The air guide ring and the air conditioner outdoor unit are invented to solve the problem of generation of turbulence noise since the edge of an air outlet of the air guide ring in the prior art generates whirl airflow. The air guide ring comprises an air guide ring main body; the air guide ring main body encircles to form an air guide duct, the air guide ring main body comprises an outer layer side wall and an inner layer side wall, an annular air guide groove is formed between the outer layer side wall and the inner layer side wall, one end of the annular air guide groove close to the inlet of the air guide duct is closed, and one end of the annular air guide groove away from the inlet of the air guide duct is open. The air guide ring can be used for guiding the airflows generated by an axial flow fan.
Owner:HISENSE (GUANGDONG) AIR CONDITIONER

High-speed chip mounter with negative pressure cooling device

The invention discloses a high-speed chip mounter with a negative pressure cooling device, the high-speed chip mounter comprises a machine body, the side part of the machine body is provided with a negative pressure cooling mechanism, the negative pressure cooling mechanism comprises a long cover frame, and the side wall of the machine body is provided with a cooling component mounting groove. According to the high-speed chip mounter with the negative pressure cooling device, a micro motor drives a gear to rotate, so that an annular fan frame drives fan blades to rotate, the fan blades carry out negative pressure air suction cooling on the interior of a machine body, meanwhile, the micro motor carries out speed reduction treatment through a speed reduction assembly, a centrifugal disc rotates slowly, and when the centrifugal disc and a limiting strip rotate, the centrifugal disc and the limiting strip are not prone to falling off. The axial center end of the centrifugal disc pushes the long cover frame fixedly connected with the cover frame rotating component to swing up and down in a reciprocating mode with the bearing as the circle, and therefore the suction opening of the long cover frame swings up and down, air flowing in the machine body is accelerated, hot air can be discharged conveniently, linkage performance is high, and the heat discharging effect in the machine body is improved.
Owner:湖北科来达电子科技有限公司

Heat transfer elements

A method for enhancing the heat transfer performance of a vertical tubular reactor by adding heat transfer elements inside the reactor tubes. Such heat transfer elements have two or more substantially curved legs of equal length with no cross fins, each with a foot that engages the inside wall of the tube, and can optionally have two or more substantially curved sub-legs that do not engage the wall of the tube.
Owner:EMERGING FUELS TECH

A rapid positioning and installation assembly of a communication terminal device

The invention discloses a quick positioning installation assembly of a communication terminal device, and relates to the field of communication terminal installation assemblies. The quick positioning and installation component of the communication terminal device includes a wall plate and a communication terminal main body, the front of the wall plate is fixedly connected with an installation positioning plate by bolts, and the front center of the installation and positioning plate is fixedly connected with a snap seat back plate, and the snap seat back A bottom plate is fixedly connected to the front and lower end of the board, vertical blocking bars are fixedly connected to both sides of the top of the bottom plate, a terminal backboard is fixedly connected to the back of the main body of the communication terminal, and a docking plate is fixedly connected to the back of the terminal backboard by bolts. The communication terminal main body of the rapid positioning and installation component of the communication terminal device can be disassembled and assembled repeatedly, without affecting the fixing stability, and without the phenomenon of bolt slippage, which can ensure the stable use of the communication terminal main body, and achieve corresponding The alarm standby state is convenient for inspection and maintenance, so that the main body of the communication terminal is not prone to failure.
Owner:熊涛

Heat pipe anchor tubes for high side heat exchangers

ActiveUS10254023B2Improve abilitiesIncreasing heat rejection efficiency and efficiencyEvaporators/condensersCompression machinesEngineeringRefrigerant
In a particular embodiment, a cooling system contains a compressor configured to compress a refrigerant, a high side heat exchanger configured to remove heat from the refrigerant, and a load configured to cool a space using the refrigerant. The high side heat exchanger has a frame and one or more refrigerant tubes extending through the frame, wherein each refrigerant tube has at least one cavity configured to allow the refrigerant to flow through the refrigerant tube. The high side heat exchanger is configured to remove heat from the refrigerant as the refrigerant flows through the one or more refrigerant tubes. The high side heat exchanger also has one or more heat pipes contacting the frame that, collectively, bear at least 25% of the weight of the one or more refrigerant tubes, are coupled directly to the frame, and are configured to remove heat from the flowing refrigerant.
Owner:HEATCRAFT REFRIGERATION PRODS

A preparation method of heat-not-burn cigarette paper containing boron nitride thermally conductive filler

The invention relates to cigarette paper manufacturing technology and aims to provide a method for preparing heat-not-burn cigarette paper containing boron nitride thermally conductive filler. The present invention improves the pulp preparation in the conventional cigarette paper papermaking process: mixing potassium oleate, polyvinyl alcohol and water, stirring evenly under ultrasonic conditions, and filtering until there is no precipitation after aging; mixing the obtained mixed solution with softwood pulp and hardwood pulp are uniformly mixed to obtain coarse pulp; under stirring conditions, boron nitride and calcium carbonate fillers are added to the coarse pulp, the temperature is raised to 60°C, and the mixture is stirred until fully mixed to obtain pulp for sizing and papermaking. The invention starts from improving the thermal conductivity of the paper, and effectively improves the stability of the cigarette paper. Boron nitride is used as a thermally conductive filler in thin-walled or paper products to give it a higher heat dissipation capacity; it not only maintains the original whiteness and transparency of cigarette paper, but also has higher conductivity; it adjusts the combustion performance of cigarette paper, Adapt the burning rate of cigarette paper and cut tobacco.
Owner:ZHEJIANG UNIV

A high-efficiency passive spent fuel pool cooling system using injection technology

The invention provides an efficient passive spent fuel pool cooling system adopting a jet technology, and belongs to the field of nuclear power plant safety. The system comprises a jet subsystem, a heat exchanger inlet pipe section, a water space heat exchanger, a gas space heat exchanger, a heat exchanger outlet pipe section, a chimney and related pipeline values. When the temperature of a spentfuel pool is higher than a warning value, the system puts into operation automatically, air outside a fuel plant is injected through high pressure gas ejected by a high pressure gas storage tank in the jet subsystem, or water inside a water storage tank and air outside the fuel plant are injected at the same time, and powerful driving force is provided for a cooling loop while the total quantity of a cooling fluid is increased. When the water or gas inside the subsystem in the jet subsystem is used up, the system still can form passive natural circulation in virtue of the density difference ofair in cold and hot sections, and long-term cooling is carried out on the spent fuel pool, so that effectively passive cooling of the spent fuel pool in 3 to 6 days or even longer time can be guaranteed in accident conditions and when an external power supply is lost.
Owner:HARBIN ENG UNIV
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