109results about How to "Eliminate "hot spots"" patented technology

The invention relates to a noninvasive radiotherapy system for a robot, and belongs to the medical equipment field. The noninvasive radiotherapy system for the robot consists of seven modules, i.e. a radiotherapy planning system, a three-dimensional numerical-control therapy bed, an automatic tracking system for a four-dimensional real-time image, a robot system, a radioactive source, an adjuvant therapy system and an integrated control system, wherein the automatic tracking system for the four-dimensional real-time image consists of a six-freedom-of-degree G-shaped arm real-time image system and an intelligent tracking system; the six-freedom-of-degree G-shaped arm real-time image system is formed by successively connecting a G-shaped arm, a G-shaped arm sliding rail, a G-shaped arm spindle, a G-shaped arm pitch shaft and a G-shaped arm sliding seat; an X ray source and an X ray dynamic flat panel detector are formed into one group, and two groups are correspondingly installed on the G-shaped arm; and the G-shaped arm sliding seat is installed in a rail (9). According to the noninvasive radiotherapy system for the robot, which is disclosed by the invention, the defects of unmatched projection time, time waste and low therapy precision in the prior art are overcome, the precise therapy of the whole body tumor can be carried out, and the cardiovascular disease therapy and the noninvasive regulation of the renal nerve disease can be carried out.

The invention discloses a combined graphite heat conducting radiating fin which comprises an intermediate layer formed by a pure-graphite heat conducting radiating fin. One surface of the intermediate layer is provided with a gum layer which increases the strength of a soft graphite sheet and prevents the graphite sheet from generating bug dust and influencing the appearance and the use, and the gum layer also betters bending capability; and a three-dimensional assembly can be processed, thereby further facilitating the processing of a graphite heat conducting radiating material with any size, any shape and any structure and enlarging use range of the graphite sheet. By adopting the anisotropic graphite heat conducting radiating fin, the efficiency in heat conduction and radiation is high, small area is occupied, the weight is light, the heat is uniformly conducted and radiated, heat point areas are eliminated, and the performance of an electronic product is improved when a heat source is isolated from components.

The invention discloses a wireless charging device, which comprises a shell, a battery arranged in the shell and a primary coil arranged in the shell, wherein a cooling layer is also arranged in the shell and is arranged between the primary coil and the shell. By the wireless charging device, the heat generated by the primary coil can be quickly diffused, so that the comfort degree during charging for a user is enhanced.

The invention discloses a hydrocarbon continuous liquid phase hydrogenation process method which includes a gas-liquid mixing step, to be more specific, a liquid phase material flow is fully mixed with hydrogen to obtain a dissolved-hydrogen-saturated liquid phase material flow by use of a gas-liquid mixer; and a hydrogenation reaction step, to be more specific, the dissolved-hydrogen-saturated liquid phase material flow flowing into a reactor flows in the direction of from the top of the reactor to the bottom of the reactor for liquid phase contact reaction with every stages of catalyst bed layers, and at the same time, new hydrogen is injected into the liquid phase material flow by a hydrogen distributor so as to realize the efficient hydrocarbon reaction of the liquid phase material flow. The present invention also discloses a hydrocarbon continuous liquid phase hydrogenation device which includes one gas-liquid mixer and one multiplestage reactor, the multiplestage reactor is connected with the gas-liquid mixer, each stage of the reactor comprises at least two stages of catalyst bed layers, and one hydrogen gas distributor is arranged between adjacent catalyst bed layers,.

The invention consists of upper and lower friction disks, cooling fins and a flange. The cooling fins have six shapes. Five T-shaped cooling columns are uniformly distributed on the circle phi 600 mm of the friction disk and between two T-shaped cooling columns are uniformly distributed five cylindrical cooling fins. Ten plate cooling fins located on the circle phi 420 mm is divided into five groups with two fins each distributed uniformly along circumference and twenty plate cooling fins located on the circle phi 454 mm is divided into five groups with four fins each distributed uniformly along circumference. Five arc cooling fins are uniformly distributed along the inner ring of the friction disk. The flange of the brake disk is connected with the arc cooling column.

The invention relates to a micro silicon-based capillary pump loop cooler. The micro silicon-based capillary pump loop cooler is characterized by comprising a pair of semiconductor silicon chips and heatproof boron silicate glass which are bonded, wherein a surface of the silicon chip (1) contacting with the boron silicate glass is etched with an evaporator (2), a condenser (3), a vapor phase channel (4), a liquid phase channel (5), a liquid storage chamber (6) and a silicon chip vacuum-pumping / liquid injection channel (9), a vacuum-pumping / liquid injection hole (12) is processed on the boron silicate glass (11), the evaporator (2) and the condenser (3) are respectively arranged at two ends of the silicon chip (1) and are mutually communicated through the vapor phase channel (4) and the liquid phase channel (5) to realize heat exchange, the liquid storage chamber (6) is communicated with a liquid inlet of the evaporator (2), and the silicon chip vacuum-pumping / liquid injection channel (9) is communicated with vacuum-pumping / liquid injection hole (12) processed on the boron silicate glass (11). The micro silicon-based capillary pump loop cooler has advantages of simple structure, convenient manufacturing and good heat radiation effect.

The invention provides a lens and a light-emitting device. The lens comprises a column-shaped lens main body, wherein the column-shaped lens main body is provided with a bottom surface, a top surface and a circumference surface; the middle of the bottom surface concaves inwards to form a light incoming surface; the top surface is a total reflection surface in the shape of a smooth transitional curved surface and is provided with a center vertex; the circumference surface is a light extracting surface; the light incoming surface comprises a first cylindrical light incoming surface connected with the bottom surface and a second pyramid light incoming surface connected with the first light incoming surface; the second pyramid light incoming surface is provided with a pyramid vertex and pyramid surfaces in the shapes of smooth transitional curved surfaces; the center vertex of the total reflection surface and the pyramid vertex of the second light incoming surface are both on the axis of the lens main body; incident ray getting into the lens main body from the first light incoming surface is directly emitted out by the light extracting surface to form a plurality of first emergent rays upwardly inclined by 0-40 degrees relative to the bottom surface; incident ray getting into the lens main body from the second light incoming surface is reflected by the total reflection surface and then emitted out by the light extracting surface to form a plurality of top emergent rays which are upwardly or downwardly inclined. According to the invention, light leaking is effectively reduced.

A hydrocarbon continuous liquid-phase hydrogenation process includes: hydrocarbon raw material and hydrogen are fully mixed through a gas-liquid mixer to form liquid-phase material flow saturated in dissolved oxygen, the liquid-phase material flow is sequentially in contact reaction with each level of catalyst bed liquid from top to bottom in a reactor containing at least two levels of catalysts, hydrogen is injected into a hydrogen distributor on the lower portion of each level of catalyst bed, and products are guided out from the reactor and subjected to subsequent treatment.

The present invention provides a ft synthesis reaction process based on the fixed bed reactor is that the cycling medium enters from the top of the fixed bed reactor after preheated, the feed gas formed by mixing the syngas with the tail gas enters from the lower of the fixed bed reactor to contact with the catalyst to process ft synthesis , the product is fully collected to process the separation of water, a long chain hydrocarbon and a gas phase component; the long chain hydrocarbon processes C5-C18 middle distillate, the separation of C18+hydrocarbon and gaseous low carbon hydrocarbon, one part C5-C18 middle distillate is mixed with the cycling liquid medium, the other part is processed oil product process, C18+hydrocarbon fully enters in the oil product process, the gaseous low carbon hydrocarbon mixing with the gas phase component forms the tail gas, the water component is used as a gas agent to return in the gasification system. The invention has high heat exchange efficiency, high syngas throughput, lower cycling gas quantity, lower energy consumption, stable operation.

The invention provides a multitubular fixed bed reactor which is characterized in that the reactor comprises a first sealing head, a second sealing head, and a housing, wherein at least one partition plate is disposed in the housing to partition the reactor into at least two sections along an axial direction of the housing; a cooling medium inlet and a cooling medium outlet are disposed on the housing outside each section of the reactor; the tube number of each section of the reactor decreases orderly away from the second sealing head along the axial direction of the housing, and the tube diameters of the tubes increase orderly. The invention also provides a coal bed methane deoxidation method performed in the multitubular fixed bed reactor. Compared with various equipment improvement in the prior art, the multitubular fixed bed reactor of the invention is simple in structure, and low in preparation difficulty. In addition, the method of the invention not only ensures the coal bed methane deoxidation effect, eliminates hot spots in the reactor, but also ensures the processing capacity of the process.

The invention discloses a slab crystallizer taper design method, and belongs to the field of steelmaking-continuous casting. The slab crystallizer taper designed by the invention is capable of sufficiently compensating the contraction of a slab shell in the crystallizer, effectively inhibiting the deformation of the slab shell in the crystallizer and preventing the continuous casting slab surface and subsurface crack from frequently occurring since the initially set slab shell is great in deformation at the upper part of the crystallizer; the slab crystallizer taper designed by the invention can be used for effectively eliminating the hot points at corner adjacent region of the wide surface and narrow surface of the slab shell so as to realize the uniform growth of the slab shell in the crystallizer; the slab crystallizer taper designed by the invention can be used for maximally lightening the abrasion of the copper plate of the crystallizer and prolonging the service life of the crystallizer; and the slab crystallizer taper designed by the invention can be used for accelerating the heat transfer of the corner part and the narrow surface of the slab shell, increasing the strength of the slab shell out of the crystallizer and lightening the narrow surface bulging of the slab shell.

The invention discloses a flame holder and a ground gas turbine combustion chamber with the same. The flame holder comprises a central ring and a plurality of radial struts fixed on the outer circular face of the central ring along the radial direction uniformly. A ring body of the central ring and the radial struts are formed by members in groove structures, and groove opening directions of the central ring and the radial struts are identical. Gas flow channels are formed in the members in groove structures and are communicated with the outside through a plurality of gas spray holes in the bottoms of the grooves. The gas flow channel in the central ring and the gas flow channels in the radial struts are communicated to form a gas flow cavity with the shape corresponding to the shape of the flame holder. By means of the flame holder, fuel gas can be burnt stably on the flame holder even under the impact of high-speed gas flows.

The invention provides a valveless piezoelectric pump of an asymmetrical tree-shaped fractal flow pipe. The valveless piezoelectric pump comprises a pump body consisting of a pump cover and a pump base, a piezoelectric vibrator, a water inlet pipe and a water outlet pipe; a water inlet, a water outlet and a sink hole are arranged on the pump cover, the water inlet pipe is connected with the water inlet, and the water outlet pipe is connected with the water outlet; the piezoelectric vibrator is fixed in the sink hole; a pump cavity, a taper flow pipe, a connecting pipe and a tree-shaped fractal flow pipe are arranged on the pump base, and the pump cavity is corresponding to the sink hole; one end of the taper flow pipe is connected with the pump cavity, and the other end is connected with the water inlet; one end of the connecting pipe is connected with the pump cavity, and the other end is connected with a main flow pipe of the tree-shaped fractal flow pipe; the tail end of a branch pipe of the tree-shaped fractal flow pipe is connected with an equal section circular flow pipe connected with the water outlet. Through the tree-shaped fractal flow pipe consisting of a quasi-fractal U-shaped fork flow pipe, the valveless piezoelectric pump eliminates the hot point of an electronic appliance well; through the asymmetrical layout of the tree-shaped fractal flow pipe and the taper flow pipe, the valveless piezoelectric pump is good for increasing the resistance difference of positive and reverse flows, and thereby the flow rate of the pump is increased.

The invention discloses a cabinet intelligent airflow optimization system and a data center based on the system, and relates to the field of computers. The system comprises a pressure sensor, a temperature sensor, a ventilation device and a controller. The pressure sensor is used for detecting pressure in a server cabinet. The temperature sensor is used for detecting outflow air temperature of the server cabinet. The controller is electrically connected with the pressure sensor and the temperature sensor and used for acquiring, transmitting and calculating pressure, detected by the pressure sensor, in the server cabinet and outflow air temperature detected by the temperature sensor. The ventilation amount is adjusted according to a set work mode. The ventilation device is electrically connected with the controller and used for operating under the control of the controller so that heat in the server cabinet can be output to a hot air channel. The system meets the cooling requirement of different heat productivity at the load peak or load valley, eliminates hot spots, and achieves the effects of reducing energy consumption and improving power density of the server cabinet.

The invention provides a light guide plate capable of eliminating hot spots and its backlight module. The light guide plate has a light incident surface and a number of spreading teeth. The light incident surface is used to receive light from at least one light source. The light incident surface, and the point light source corresponds to at least any three adjacent spreader teeth, so that the projected area of ​​the point light source on the light incident surface covers the aforementioned at least three adjacent spreader teeth. The surface roughness of each spreader tooth is greater than 0.9 μm, and the light from the point light source is first projected onto at least three adjacent spreader teeth, scattered through the spreader tooth structure, and at the same time passed through its surface roughness greater than 0.9 μm Diffuse due to the structure, thereby increasing the luminous angle of the light entering the light incident surface, thereby eliminating the hot spot phenomenon and improving the optical characteristics.

The invention discloses a method for improving a uniform heat dispersion performance of a lithium ion battery electrode piece, relates to methods for uniform heat dispersion performances of battery electrode pieces and solves the problem that a heat-conducting performance of the plane of a conventional metal current collector adopted in a lithium ion battery is poor, so that the local overheating of an electrode in the charging and discharging processes occurs, and further battery bloating is caused and the service life of the battery is shortened in the prior art. The method has the characteristics that flexible graphite paper is used for replacing an aluminum foil and a copper foil in the lithium ion battery to be used as an electrode material active substance-loaded current collector; and heat at heat points of the electrode piece can be fast and uniformly dispersed by using the high heat-conducting performance of the flexible graphite paper, so that the heat points can be removed, the temperature of a battery cell is uniformly distributed, and further electrolyte decomposing, battery service life shortening and battery damage caused by the local overheating of the battery core can be avoided. The electrochemistry unreactiveness of the flexible graphite paper and the condition that the flexible graphite paper can not react with lithium ions and the electrolyte during over-charging and over-discharging are used, so that the service life of the battery is prolonged, and the safety of the battery is improved; and the method is used in the field of the batteries.

The invention discloses a light guide plate and a backlight module. The light guide plate is provided with a first area and a second area and comprises a plate body, a plurality of first strip-shapedmicrostructures, a plurality of prism-shaped microstructures and a plurality of light scattering microstructures. The plate body is provided with a first surface, a second surface and a first side surface which are opposite to each other, and the first area is closer to the first side surface than the second area. The first strip-shaped microstructures are formed on the first surface and located in the first area. The first strip-shaped microstructure extends along a first direction parallel to the first side surface. The prism-shaped microstructure is recessed into the second surface and is located in the second region. Each prism-shaped microstructure is provided with a first inclined surface facing the first side surface. The light scattering microstructure is recessed into the second surface and is located in the first region. The backlight module comprises the light guide plate. The light guide plate and the backlight module have good optical performance.

The invention belongs to the technical field of equipment cabinets and discloses an equipment cabinet and communication equipment. The equipment cabinet comprises a cabinet body and an air conditioner which is arranged at the upper end or the lower end of the cabinet body. An air conditioner heat exchanging cavity is arranged at one end, close to the air conditioner, of the equipment cabinet. An inner circulation air outlet and an inner circulation air returning opening which are communicated with the air conditioner heat exchanging cavity are formed in the cavity body. The cavity body is further provided with an inner circular middle air opening. An air channel part which is used for guiding air flow at the inner circulation middle air opening to the inner circulation air returning opening or for guiding cooling air flow to the inner circulation middle air opening is arranged on the side face of the cabinet body. The communication equipment comprises the equipment cabinet. According to the equipment cabinet and the communication equipment, even temperature in the equipment cabinet can be guaranteed, and safety and reliability are high.

The invention discloses an inferior diesel pour-point depressing modification method, which comprises the following contents: (1) an inferior diesel material and a powdery hydrofining catalyst are fully mixed in a mixer to obtain a mixed feed of the catalyst and the raw oil; (2) the mixed feed and hydrogen enter a boiling-bed reactor from the bottom of a reactor filled with a mixture of a hydrodewaxing catalyst and a hydro-upgrading catalyst to undergo a hydrogenation reaction; (3) the reaction product is charged out of the top of the boiling-bed reactor and then enters a stable reactor to supplement hydrofining; and (4) the material undergoes solid-liquid separation, and a liquid phase enters a fractionating system so as to obtain a diesel product with high quality, low pour point, low sulfur content and high cetane number. According to the method, the backmixing characteristic of the boiling-bed reactor is fully utilized, and cooling and hydrofining of the hydrodewaxing process and temperature rising of the hydro-upgrading process are reasonably utilized. Therefore, the diesel with low pour point and ultra-low sulfur content is produced, cetane number is raised, hot-spot temperature of the device is reduced, running period is prolonged, and operation expenses are saved.

The invention discloses a hierarchical heat driving floor planning and layout method which comprises the following steps of: firstly, arranging a plurality of modules according to a power sequence, and forming a module sequence; secondly, grouping the module sequence from front to back according to an area sum, dividing into a plurality of module layer groups with approximately equal area sum; thirdly, establishing an analysis heat mold for calculating the average temperature of the module groups; fourthly, acquiring a power distribution constraint graph of each module group; and fifthly, sequentially arranging the module groups above a heat dissipating device at the bottom layer according to the power density, the sequence from big to small and the respective power distribution constraint graph. In the method, a three-dimensional layout problem is converted to a two-dimensional layout problem, thereby avoiding putting a high-power density device in a pile of vertical regions, realizing power density balanced distribution in vertical and horizontal directions, efficiently reducing the hot spot amount and optimizing the chip area and the interconnecting wire length.

The invention discloses a hydrogenation reactor with an impact reducing element. The fixed bed hydrogenation reactor comprises a material inlet pipe, an inlet diffuser, a reactor upper head, an impactreducing flow equalizing disc, a catalyst bed layer, a catalyst support grid, a reactor cylinder, a reactor lower head, an outlet collector, a material outlet pipe and a catalyst discharge pipe. Theimpact reducing flow equalizing disc is arranged in an idle space of the reactor upper head or above the top end of the reactor cylinder and a top distribution disc; the impact reducing flow equalizing disc is provided with a plurality of distributors and each distributor comprises a flow equalizing disc, a downcomer and a connecting rod, and the flow equalizing discs are connected with the downcomers through the connecting rods. The hydrogenation reactor disclosed by the invention is suitable for hydrofining or hydrocracking treatment processes of oil products.

The invention relates to an integrated packaging structure of an IGBT chip and a phase-transformation soaking plate. The integrated packaging structure is composed of an end cover, an upper shell plate, a bottom plate and an IGBT chip that are connected fixedly and successively. The IGBT chip is welded to the bottom of the bottom plate. A plurality of columnar fins are arranged at one side, approaching the end cover, of the upper shell plate; heat-exhange space for heat exchanging is encircled by the end cover and the upper shell plate; and the plurality of columnar fins are arranged in the heat-exhange space with at least one cooling liquid inlet and outlet. A plurality of support posts are arranged at one side, approaching the bottom plate, of the upper shell plate; an enclosed soaking plate cavity is encircled by the upper shell plate and the bottom plate; the plurality of support posts are arranged in the enclosed soaking plate cavity; and the enclosed soaking plate cavity filled with a working medium is in a vacuum state. Compared with the prior art of setting a heat-conducting film or coating a thermal conductive paste between the IGBT chip and the bottom plate, the integrated packaging structure has the following beneficial effects: the IGBT chip is welded to the bottom plate of the soaking plate, so that the contact thermal resistance is reduced effectively; and a high-temperature process is carried out before a process of liquid injection, vacuumization, and sealing of the soaking plate, so that the soaking plate is protected from being damaged by thermal expansion.

The invention discloses a novel rapid cooling hydrogen tank. The novel rapid cooling hydrogen tank comprises, from the upper part to the lower part, a liquid collecting plate, a liquid dropping plate, a separating plate, and a redistributing sieve plate; a center opening of the liquid collecting plate is provided with a traverse baffle; a center opening of the liquid dropping plate is provided with a liquid collecting groove; a cold hydrogen pipe coiled pipe is arranged in the liquid collecting groove; a center opening of the separating plate is provided with a mixing pipe; the center of the redistributing sieve plate is provided with a diversion cone; and the periphery of the diversion cone is provided with small holes. The novel rapid cooling hydrogen tank is provided with the liquid collecting groove, and the liquid collecting groove is used for collecting liquid phase materials of an upper bed layer; the cold hydrogen pipe is arranged in the liquid phase materials in the liquid collecting groove in a coiled manner, cold hydrogen is sprayed out from the cold hydrogen pipe so as to stir and bubble the liquid phase materials, the relatively high temperature difference of the cold hydrogen and the liquid phase materials is used for enhancing gas-liquid heat transferring, heat is transferred from the liquid phase materials to the cold hydrogen, and then the cold hydrogen is mixed with oil gas for heat transferring, so that heat exchange efficiency of the novel rapid cooling hydrogen tank is increased greatly.

An inner-cooling transformer rolling iron core is formed by three rolling iron core components with closed magnetic circuits. Each rolling iron core component comprises two straight line portions and two arc portions. Each closed magnetic circuit is formed by connecting the two straight line portions and the two arc portions of each rolling iron core component in end-to-end mode. A vertical section of each closed magnetic circuit is in a shape of an athletic track, every two of six straight line portions of the three rolling iron core components are combined with each other to form three iron core columns of the rolling iron core, and six arc portions of the three rolling iron core components form six arc iron yokes connecting the three iron columns and arranged on the upper portion and the lower portion. Two straight line portions of each rolling iron core component are provided with cooling grooves extending along the central lines of the rolling iron core component respectively, every two groove openings of the two cooling grooves on two adjacent rolling iron core components are clamped oppositely, and an inner cooling channel penetrating vertically is formed inside each iron core column. The inner-cooling transformer rolling iron core adopts a novel three-dimensional rolling iron core structure and new design of removing an innermost hot point of the rolling iron core so that the temperature of the rolling iron core is reduced, and the service life of the rolling iron core is prolonged.

The invention discloses an intelligent photovoltaic assembly capable of preventing a hot spot, which comprises a terminal box, direct-current adjustable transformers, control units and an information processing unit, wherein a plurality of solar cell groups are connected between the positive pole and the negative pole of the terminal box in series; each solar cell group comprises a plurality of solar cells; each solar cell group is connected with other solar cell groups in series through one direct-current adjustable transformer; the control units are connected with all the direct-current adjustable transformers and are used for collecting input voltage information and current information of the direct-current adjustable transformers and adjusting the voltage adjusting rate of the direct-current adjustable transformers according to output current of a system so as to enable the output current of the direct-current adjustable transformers to be the same with the output current of the system; and the information processing unit is connected with all the control units and can be used for calculating the output current of the system according to the information collected by the control units. The whole output power of the intelligent photovoltaic assembly is greater than that of an assembly of a common bypass diode, a shielded battery panel cannot be in an reversed bias voltage state, thereby thoroughly eliminating the hot spot phenomenon, and the assembly has the advantages of being high in output power, safe and reliable and the like.

The invention discloses a toothed weir type impact reducing and uniform fluid distributing plate and belongs to the field of chemical equipment. The toothed weir type impact reducing and uniform fluiddistributing plate comprises a tray and distributors arranged on the tray, wherein each distributor comprises a uniform fluid distributing plate, a material lowering pipe and connecting rods, and theuniform fluid distributing plate is arranged above the material lowering pipe and connected with the material lowering pipe through the connecting rods. The toothed weir type impact reducing and uniform fluid distributing plate has the characteristics of impact reducing and uniform fluid distributing functions, good distribution effect, small size, low mounting precision requirement and the like.

The invention provides a light guide plate, a backlight module group and an optical microstructure processing method. An optical microstructure having a number of continuous arc recessed parts is arranged on the light guide plate, a section of the optical microstructure is shaped as a number of connected arc line segments, neighboring arc recessed parts are not equal in maximum depth, and therefore the optical microstructure is enabled to have a long axis. Via the optical microstructure, light rays reaching the light guide plate are enabled to proceed along the long axis, a dark zone of the light guide plate can be filled with the light rays, and overall light emitting uniformity can be improved. Demand for large-sized light guide plates can be satisfied because the optical microstructure can be processed via laser, and light guide plates with high yield rate s can be provided.

The invention provides a combined synthetic method for liquid hydrocarbon. According to the method, a purified raw material--synthetic gas enters a first-stage Fischer-Tropsch synthesis reactor for a reaction, the first-stage reactor employs a slurry bed reactor and an iron-based catalyst to separate a product of the first-stage Fischer-Tropsch synthesis reaction, and tail gas enters a CO2 removing unit; and a material flow without CO2 is introduced into a second-stage reactor, the second-stage reactor employs a tubular fixed bed reactor and a cobalt-based catalyst to separate a product of a second-stage Fischer-Tropsch synthesis reaction, a part of tail gas returns to the second-stage reactor for cyclic reaction, the inner surface of a reaction tube of the tubular fixed bed reactor is smooth, and the external surface of the reaction tube has a groove. The method overcomes the disadvantages of a low CO utilization rate, hardly controllable reaction heat release, a high catalyst deactivation rate, etc. of conventional process and improves reaction selectivity and liquid hydrocarbon yield.

The invention provides electrical heating automobile laminated glass with a shunt bus. A shunt bus (7) and a shunt auxiliary bus (8) are located in an edge film-removal non-conductive area (4). The two ends of the shunt bus (7) are electrically connected with an upper bus (3.1) and the shunt auxiliary bus (8) is electrically connected with the shunt bus (7). A first auxiliary bus (6.1), a second auxiliary bus (6.2) and a third auxiliary bus (6.3) are distributed in an electro-thermal film layer of a heating area of a rest position a windscreen wiper. The first auxiliary bus (6.1) and the third auxiliary bus (6.3) are electrically connected with a lower bus (3.2). Through symmetrical design, the effect of uniform heating is achieved; the problem of hot spots of ends of buses in the prior art is solved; the problem of hot spots caused by excessive current resulting from converging on the buses is solved; without increasing the number of connectors, the problem of hot spots in a heating area of a rest position of a windscreen wiper is solved.

Described is an adaptive automatic computer room air conditioner (CRAC) or computer room air handler (CRAH, CRAC and CRAH is referred interchangeably in this article) group control method. This method automatically controls each HVAC unit's on / off status, return temperature set point, fan speed or cooling valve position to secure the data center thermal environment for server's secure running and minimize the cooling energy use. The method creates a comprehensive feedback control loop between temperature sensor network, data center environment and CRACs.