47 results about "Cold pool" patented technology

The invention discloses an air supply control method for equipment in a machine room, comprising the following steps: an air supply controller receives induction values of temperature sensors at an air inlet and an air outlet in a machine cabinet and receives induction value of running current in the machine cabinet; the induction values are calculated by a presetting computing formula, a corresponding air quantity regulation value can be obtained according to the calculated value; the quantity and rotating speed of the fans at the position of the air inlet can be controlled according to the regulation value, so as to regulate the air inlet quantity; and a cabinet door of the machine cabinet is connected with a cold pool cabinet body forming an air flow circulating space, the cold pool cabinet body comprises an air inlet passage arranged at the top or bottom of the cold pool cabinet body and a fan module for regulating air quantity. A central control system calculates the received temperature values in all machine cabinets, the running current values of the machine cabinets, the needed air quantity values of the machine cabinets, the self-measuring temperature values of the machine cabinets and the running power values of the machine cabinets by a setting computing formula, so as to control a switching on/off state of the air conditioner connected with the air inlet passage and regulate the total air quantity and the total refrigerating capacity.

Disclosed herein is a fully passive decay heat removal system utilizing a partially immersed heat exchanger, the system comprising: a hot pool; an intermediate heat exchanger which heat-exchanges with the sodium of the hot pool; a cold pool; a support barrel extending vertically through the boundary between the hot pool and the cold pool; a sodium-sodium decay heat exchanger received in the support barrel; a sodium-air heat exchanger provided at a position higher than the sodium-sodium decay heat exchanger; an intermediate sodium loop connecting the sodium-sodium decay heat exchanger with the sodium-air heat exchanger; and a primary pump, wherein a portion of the effective heat transfer tube of the sodium-sodium decay heat exchanger is immersed in the cold pool, particularly in a normal operating state, and the surface of the lower end of a shroud for the sodium-sodium decay heat exchanger, the lower end being immersed in the sodium of the cold pool, has perforated holes.

The invention discloses a wear leveling method, which comprises the following steps of: determining a pool mask of each physical block according to an erasing count of each physical block, wherein the pool mask of the physical block is determined as a cold pool mask (CPM), a normal pool mask (NPM) or a hot pool mask (HPM) according to different erasing counts; and when a pool mask of a certain physical block is changed from the NPM to the HPM, copying the data of any physical block with the pool mask of CPM into the physical block with the pool mask of HPM, and performing spam collection by taking the physical block with the pool mask of CPM as a spam block, wherein a cold pool, a hot pool and a normal pool are divided according to a value of a reference erasing count counter (RECC) and a threshold (TH) value, the value of the RECC is equal to an erasing count of a physical block with the smallest erasing count in the physical blocks, and the preset TH value is changed along with the wear condition of the physical block. The invention also discloses a wear leveling device. By the method and the device, additional wear caused by wear leveling can be reduced.

A decay heat removal system for a liquid metal reactor, in which a decay heat exchanger (DHX) is installed concentrically with an intermediate heat-exchanger (IHX) in the same cylinder which separates the DHX and IHX from the reactor pool fluid, and serves to remove the reactor core decay heat. The cylinder surrounds the IHX and the DHX, and has an opened top portion protruded out of the level of the fluid in a hot pool, a bottom portion connected to a cold pool and a guide pipe for allowing the passage of the fluid from the hot pool into the IHX. The decay heat removal system can remove decay heat immediately after occurrence of an accident, thereby improves the safety of a nuclear plant.

Dis0closed herein is a direct pool cooling type passive safety grade decay heat removal method and system for removing core decay heat in a pool type liquid metal reactor when a normal heat removal system breaks down. In the liquid metal reactor comprising a reactor vessel, the interior of which is partitioned into a hot pool above a core and a cold pool around the core so that liquid level difference between the hot pool and the cold pool is maintained by a primary pumping head under normal steady-state conditions, is disposed at least one circular vertical tube in such a manner that the sodium in the circular vertical tube is maintained with the same liquid level as the liquid level of the sodium in the cold pool. In the circular vertical tube is disposed a sodium-sodium heat exchanger, which is connected to a sodium-air heat exchanger mounted above a reactor building via a heat removing sodium loop, in such a manner that it is placed at the position higher than a liquid level of the sodium in the cold pool under the normal steady-state conditions. Under transient conditions, for example, when the normal heat removal system breaks down, the primary pump is automatically tripped, and accordingly the liquid level of the cold pool rises with the result that the liquid level difference between the hot pool and the cold pool is eliminated. Consequently, the sodium-sodium heat exchanger makes direct contact with the hot sodium so that core decay heat is discharged into a final heat sink, for example, the atmosphere. In this way, the decay heat removal system of the present invention is operated on the basis of a completely passive concept with improved operational reliability. Heat loss incurred by the decay heat removal system is minimized under normal steady-state conditions, whereby economical efficiency is maximized. The decay heat removal system of the present invention can effectively remove core decay heat under transient conditions. Moreover, the decay heat removal system of the present invention provides an additional heat removal capacity obtained by the passive vessel cooling system, whereby the decay heat removal system of the present invention can be easily applied to a large thermal rated liquid metal reactor.

The invention discloses an in-pile heat separation system of a liquid heavy metal cooling natural circulating pool type reactor. The system consists of an inner layer coolant inlet, an outer layer coolant inlet, a coolant inlet baffle, an inner layer heat partition plate, a middle layer heat partition plate, an outer layer heat partition plate, an inner layer coolant outlet, an outer layer coolant outlet, an inner layer coolant outlet baffle and an outer layer coolant outlet baffle. Gaps between the heat partition plates of the system are filled with liquid heavy metal and are communicated with a cold pool; coolants in the gaps between the heat partition plates are used for cooling the heat partition plates from bottom to top under the action of natural circulating driving force and are gathered into a hot pool through the coolant outlets above the heat partition plates. The in-pile heat separation system realizes a function of separating the cold pool from the hot pool in the liquid heavy metal cooling natural circulating pool type reactor; with the adoption of the complete passive design, the system is simple in structure; during running, an in-pile structural member does not need to be added or started; the heat efficiency of the liquid heavy metal cooling natural circulating pool type reactor can be effectively improved, the circulating stability of the coolants of the reactor can be guaranteed, and the economical property and the safety of the reactor can be improved.

The invention discloses a method and a device for cooling air-conditioning circulating water by using cold energy of liquefied natural gas. The method includes the steps: (1) exchanging heat of the liquefied natural gas with coolants, and then vaporizing the liquefied natural gas into 0.3-0.5MPa natural gas at the temperature ranging from 14 DEG C to 16 DEG C to enter a natural gas pipe network; (2) exchanging heat of the coolants after heat exchange with water in an ice storage tank, condensing the water in the ice storage tank into ice, increasing the temperature of the coolants, and returning the coolants to a coolant storage tank for recycle; and (3) leading the air-conditioning circulating water to enter an air conditioner after cooling the air-conditioning circulating water with the ice in the ice storage tank. The method is used for recycling the cold energy of 3000kg/h LNG (liquefied natural gas) at the temperature of -162 DEG C, 4.5t/h water can be condensed into ice, the ice provides about 700kW cold energy for the air conditioner with cold water per hour, and the economic benefit of about 2.45 million Yuan can be obtained every year. The method is simple in process, convenient in control, high in operational flexibility, high in cold energy utilization efficiency and low in energy consumption, and has wide industrial popularization and application prospect.

The invention relates to a sealed cold pool machine room which comprises a floor with an air inlet. The floor is provided with at least one pair of machine cabinet rows oppositely arranged side by side, top plate assemblies are detachably connected to the tops of the machine cabinet rows, a front cabinet door and a back cabinet door are arranged on the first pair of machine cabinet rows and the last pair of machine cabinet rows respectively, a cold pool is formed by the front cabinet door, the back cabinet door, the top plate assemblies and the machine cabinet rows which are oppositely arranged side by side together in the state that the front cabinet door, the rear cabinet door and the top plate assemblies are closed, and cold air discharged through the air inlet can be gathered in cold channels to bring away heat generated by the machine cabinet rows. Compared with the prior art, the sealed cold pool machine room has the advantages that the cold pool is formed by the front cabinet door, the back cabinet door, the top plate assemblies and the machine cabinet rows which are oppositely arranged side by side together in the state that the front cabinet door, the rear cabinet door and the top plate assemblies are closed so that cold air released out of the part, at the air inlet, of the floor can be completely utilized, the backflow phenomenon of hot air cannot be generated by machine units on the sides of the machine cabinet rows any more, and the problem that the effectiveness of cold air of cold channels is lowered is solved.

The invention discloses a main loop circulating device for a pool type liquid heavy metal cooling reactor. The main loop circulating device comprises a container, a reactor core, a main pump, a heat exchanger, a thermal baffle, a control rod driving mechanism, a control rod assembly, a fuel assembly, a heat exchanger outlet end, a heat exchanger inlet end, a main pump inlet end, a main pump outlet end, a grid plate header, a throttling valve, a reactor top cover, a hot pool, a cold pool and cover gas. According to the main loop circulating device disclosed by the invention, the rod dropping time of the control rod driving mechanism can be effectively guaranteed under accident conditions, the structure of the device is simple, only a set of pipeline system needs to be additionally arranged in the main container, the operations of running, refueling and shutting down the reactor are not influenced, and the economical efficiency, reliability and safety of the reactor are effectively improved.

The invention discloses a sealing cold pool system, and belongs to the technical field of heat dissipation protection of transmission equipment in a communication machine room. The system comprises afirst sealing assembly, a cabinet assembly and a second sealing assembly. The first sealing assembly is arranged on the front side of the cabinet assembly to form a first sealing cold channel. The second sealing assembly is arranged at the rear side of the cabinet assembly to form a second sealing cold channel; the cabinet assembly comprises a power distribution cabinet, an inter-column air conditioner and a main equipment unit which are arranged side by side. The inter-column air conditioner comprises a front air supply port, a rear air supply port and a top air return port, the front air supply port is communicated with the first sealing cold channel, the rear air supply port is communicated with the second sealing cold channel, and the main equipment unit is of a front-rear air inlet and top air outlet structure formed by combining a plurality of transmission equipment and air guide cabinets on the two sides of the transmission equipment. According to the technical scheme, cold poolsealing is carried out on transmission equipment with a complex air duct, the heat dissipation problem of high-power-consumption transmission equipment is solved, the local refrigeration efficiency of a machine room is improved, and the maintenance cost of the machine room is reduced.

The invention provides a cold pool flow channel capable of effectively improving the safety of a pool type lead-cooled fast reactor. The cold pool flow channel is realized by mainly depending on a cold pool secondary partition hole plate. The cold pool secondary partition hole plate comprises a horizontal section hole plate and a vertical section hole plate, and the thickness of the cold pool secondary partition hole plate is the same as that of a heat partition plate. Holes are formed in the horizontal section, so that retention of a lead cooling agent by the secondary partition hole plate can be avoided when a free liquid level drops. Open holes for adjusting the hole plate at the outlet position of the vertical section are circumferentially distributed, so that lead flows upwards uniformly, more lead in the cold pool takes part in whole flow, the thermal inertia safety advantage of the lead pool is exerted to a great extent, and the passive safety performance of the lead-cooled fastreactor is further improved. When a notch occurs in a heat exchange tube of a main heat exchanger, the new cold pool flow channel design enables the cold pool to have more time to perform gas liquidseparation, so that the quantity of water vapor which is entrained by the lead to enter the reactor core is reduced to a great extent and introduction of excessive positive reactivity is avoided. Thecold pool flow channel has one structure and multiple safety functions, simplifies the systematic design of the lead-cooled fast reactor, and can effectively improve the safety and the economic property of the lead-cooled fast reactor.

The invention provides a pool type lead-based fast reactor with labyrinth type flow channels. The pool type lead-based fast reactor comprises a reactor container, a reactor top cover, a lower end socket, a reactor core mounting component, a reactor core, a control rod, a driving mechanism of the control rod, a cold-hot pool partition plate, a first auxiliary partition plate, a heat exchanger and adriving pump. The reactor container is hermetically connected with the reactor top cover and the lower end socket; the reactor core is mounted on a mounting position of the reactor core mounting component; the control rod and the driving mechanism thereof enter the reactor container and are connected with the top of the reactor core; the reactor container is divided into a hot pool and a cold pool which do not communicate with each other by the cold-hot pool partition plate; the first auxiliary partition plate is located outside the cold-hot pool partition plate and is a certain distance awayfrom the cold-hot pool partition plate; the heat exchanger penetrates through the hot pool and enters the cold pool to realize heat conduction; and the driving pump enters the cold pool to realize coolant circulation in the cold pool. According to the invention, the complexity of components in the reactor and the flow resistance of a primary loop coolant can be reduced, and the risk that tiny bubbles or water drops enter the reactor core when a heat transfer pipe of the heat exchanger is broken can be avoided.

The invention discloses a natural circulating cooling liquid heavy metal reactor. The natural circulating cooling liquid heavy metal reactor comprises a main container, a separating device, a main heat exchanger container, a main heat exchanger, a heat connecting pipe, a cold connecting pipe and an electromagnetic driving device, wherein the separating device is used for separating the inner space of the main container into a heat pool and a cold pool which are independently arranged; a reactor core is arranged at the bottom part of the heat pool; the heat connecting pipe and the cold connecting pipe are used for respectively communicating the main container and the main heat exchanger container to form a cooling loop; the electromagnetic driving device is used for enabling liquid heavy metal in the cooling loop to generate pressure gradient under the action of magnetic field force in the reactor starting and power increasing process, thereby driving the liquid heavy metal in the cooling loop to flow. The natural circulating cooling liquid heavy metal reactor has the advantages that the operability of the natural circulating cooling liquid heavy metal reactor is improved; the certain passive safety property is realized, and the safety and economy of the natural circulating cooling liquid heavy metal reactor are effectively improved.

The invention provides a cooling system for a data center system and the data center system. A mixed air chamber and a hot return air layer are connected through a return air port and are arranged inthe same layer; an air supply chamber and a cold pool layer are connected through an air supply port and are arranged in the same layer; a lower air supply chamber is formed in a machine room of the cooling system to flow to the cold pool layer; the cold pool layer flows to the hot return air layer from bottom to top; an upper hot return air layer flows to the mixed air chamber; the mixed air chamber exchanges heat and cools the indoor return air and then flows to a circulating cooling system of the air supply chamber from top to bottom; air current circulation is implemented by fully utilizing the air autoconvection mode of natural descending of cold air and natural ascending of hot air, thereby reducing the mixing of cold and hot air, improving the refrigerating efficiency and recyclingof energy. A diffuse type air supply end is disposed in the air supply port so that the cold air is diffused to the whole cold pool layer in a manner of diffusion, and the negative pressure problem caused by the excessive wind speed of the proximal cabinet of the air supply port and the problem of insufficient cold air volume of the remote cabinet of the air supply port are solved.

A gravity-assisted heat pipe cooling source cold storage system and chiller set. The cold storage system includes a gravity-assisted heat pipe, a cold storage pool, a heat exchanging and cold condensing device, and a heat exchanger pipe. A lower end of the gravity-assisted heat pipe is arranged in the cold storage pool, and an upper end of the gravity-assisted heat pipe is arranged in the heat exchanging and cold condensing device. The heat exchanger pipe is buried underground, and includes a central pipe and a side pipe. Upper ends of the central pipe and the side pipes are communicated with an inlet and outlet of the heat exchanging and cold condensing device, respectively. Lower ends of the central pipe and the side pipes are communicated with each other. The system employs the heat exchanger pipe to provide a cooling source for the gravity-assisted heat pipe.

The invention relates to a cooling system for servers with different calorific value, belonging to the technical field of server cooling, comprising an evaporative condenser, a first subcooler, a liquid reservoir, a first fluorine pump, a liquid cooling tank and a second subcooler; the output end of the evaporative condenser is connected to the first supercooler through a pipe, the first sub-cooler is connected with the liquid reservoir through a pipeline, a liquid reservoir is connecte with a first fluorine pump through a pipeline, the first fluorine pump is connected to the inlet of the liquid cooling box through a pipeline, the inlet of the liquid cooling box is connected with the outlet of the liquid cooling box through a channel arranged in the wall of the liquid cooling box, a firstcooling medium is arranged in the cold pool of the liquid cooling box, a high heat generating server is arranged in the first cooling medium, an outlet of the liquid cooling box is connected with a second subcooler through a pipe, the second subcooler is connected with a low heat generating server through a pipe, and the low heat generating server is connected with an input end of an evaporative condenser through a pipe. The invention is used for solving the technical problem of heat dissipation of different heat generating servers.

The invention discloses a solid-liquid phase transition brine concentration method which comprises the following steps: preparing a plurality of cold storage containers, wherein cold storage agents with the solidifying point of 0 DEG C or lower are stored in the cold storage containers; placing the plurality of cold storage containers in a cold storage pool, wherein the temperature inside the cold storage pool is reduced by a refrigerating system; placing the plurality of cold storage containers in a freezing pool, and introducing brine to be concentrated into the freezing pool; taking out the cold storage containers of which the surfaces are frozen from the freezing pool after the surfaces of the cold storage containers in the freezing pool are frozen, and putting the taken cold storage containers with frozen surfaces into a deicing pool; and taking the cold storage containers out of the deicing pool after ice on the surfaces of the cold storage containers placed in the deicing pool is melted or drops, and putting the cold storage containers into the cold storage pool. The invention aims to provide a solid-liquid phase transition brine concentration method; and according to the method, the production process is simple, scales, corrosion and other problems difficultly occur in the brine concentration process, the service life of equipment is long, the brine concentration cost is low, the efficiency is high, and the energy-saving effect is very outstanding.

The invention provides a temperature prediction method and device, a model training method and device, an electronic device and a computer readable storage medium, and relates to the technical field of artificial intelligence. The temperature prediction method comprises the steps of obtaining the air conditioner air outlet data, the server load data and the cold pool air inlet air volume data; inputting the air conditioner air outlet data into a pre-trained first machine learning model to obtain the cold pool air inlet temperature and humidity prediction data; and inputting the cold pool air inlet temperature and humidity prediction data, the server load data and the cold pool air inlet air volume data into a pre-trained second machine learning model to obtain the cabinet air outlet temperature prediction data. According to the invention, the cabinet air outlet temperature can be accurately predicted, so that the cabinet air outlet temperature can be conveniently and efficiently obtained in real time.

The invention discloses a heat dissipation method of a server, and belongs to the technical field of data storage. The method comprises the steps that the even number of racks are oppositely arranged, and air return plenum chambers at the tops of the racks seal gaps between the tops of the racks and a ceiling; the bottoms of the rear cavities of the racks are communicated with an air inlet channel at the bottom of a machine room to introduce cold air, the rear cavities of the racks on the two sides of the odd number of passages are oppositely arranged to form a cold pool and are communicated with the air inlet channel through a grid plate, a fan on the lower side of the grid plate blows the cold air into the cold pool, and rear panels of the racks are not closed to enable the cold air in the cold pool to enter the rear cavities; and the front cavities of the racks on the two sides of the even number of passages are oppositely arranged, return air inlets are formed in the upper portions of the front cavities and communicate with the return air channels so as to send heat of the racks to the return air channels, and the tops of the front cavities of the racks communicate with the return air channels in the top of the machine room through return air plenum chambers so as to exhaust hot air. The method can be used for high power density, normal operation of the server is guaranteed, and when the air inlet temperature is 18-19 DEG C, the air return temperature is smaller than 28 DEG C.

The invention belongs to the technical field of reactor simulation experiments, and particularly relates to an experimental model for a sodium-cooled pool type fast reactor natural circulation experiment. The experimental model comprises a cylindrical shell formed by sequentially connecting an upper sealing head, an upper cylinder body, a lower cylinder body and a lower sealing head from top to bottom in a sealed mode, the upper sealing head and the upper cylinder body form a hot pool, and the lower cylinder body and the lower sealing head form a cold pool. The experimental model also comprises a simulated reactor core located in the center of the shell, a central measuring column simulation part located above the simulated reactor core, a large grid plate header simulation part located below the simulated reactor core, a DR type heat exchanger simulation part arranged in the hot pool, a DL type heat exchanger simulation part arranged in the cold pool, and an M-type heat exchanger simulation part arranged between the hot pool and the cold pool in a penetrating manner. Working media in the cold pool can be powered by an external circulating pump to sequentially enter the large grid plate header simulation part and the simulation reactor core to enter the hot pool, and then return to the cold pool again after exchanging heat with the M-type heat exchanger simulation part.

The invention discloses a post-heating type waste heat coupling method, and belongs to the field of heat supply waste heat recovery and heat distribution. The method aims to achieve the effects that mixed heat exchange of a low-temperature heat source and a high-temperature heat source is achieved, the heating requirement can be met in heating, the use of the high-temperature heat source is reduced, self-circulation of intermediate water is achieved, and heat is reasonably distributed. According to the method, circulating water is directly discharged into a cold pool (21) through a cooling tower, intermediate water at 33-35 DEG C output by the hot ends of condensers of a first heat pump, a second heat pump and a third heat pump is collected through a water collector, and a fourth circulating pump for pumping the intermediate water in the water collector is mounted on a pipeline at the front end of the water collector. According to a lithium bromide heat pump heating method, a power plant condenser leading-in pipe communicates with a high-temperature heat exchange section of a lithium bromide heat pump and conveys high-temperature heat exchange water (100 DEG C) to the high-temperature heat exchange section, an outlet of the high-temperature heat exchange section communicates with an inlet of a low-temperature heat exchange section, and the effect that a large number of low-temperature heat sources can be provided to achieve coupling heat supply with high-temperature steam provided by a power plant is achieved.