52results about How to "Enhanced heat transfer properties" patented technology

The invention discloses a constant-pressure multiple-effect evaporation condensation sea water desalination device with an air medium, which mainly comprises a low-and-medium temperature heat source (13), a first-stage heating evaporator (14), an evaporation condenser (4) and a last-stage condenser (8). The first-stage heating evaporator (14), the evaporation condenser (4) and the last-stage condenser (8) are installed in sequence closely, and the low-and-medium heat source (13) and the first-stage heating evaporator (14) are connected together. The first-stage heating evaporator (14), the evaporation condenser (4) and the last-stage condenser are all formed by combining a plurality of heat exchange plates which are arranged from left to right in sequence, and a gap is reserved between every two adjacent heat exchanging plates to form a flow channel for heat exchange fluid. By adopting the plate-type heat exchange principle, the sea water desalination device realizes multiple-effect air humidification and dehumidification evaporation and condensation for sea water desalination under constant pressure. Heat and moisture transfer is performed between sprayed sea water and overflowing air, and the condensation latent heat of fore effect heat and moisture air can be absorbed at the same time, and therefore, energy recovery is realized and the fore effect heat and moisture air can be condensed to obtain fresh water.

The invention provides an environmental protection type self-radiation nano ecological paint and a preparation method thereof, belonging to the field of functional paints. The nano ecological paint comprises the components: 15% to 80% of aluminum sol, 15% to 80% of silicon sol, 4% to 10% of nano heat conductive filler, 3% to 27% of pigment and 5% to 25% of anti-settling agent, wherein the nano heat conductive filler is a compound body of 2% to 5% of nano carbon tube and 2% to 10% of nano cobalt oxide or 2% to 10% of nano zirconia. The preparation method comprises the steps of: weighing corresponding aluminum sol, nano heat conductive filler, pigment, anti-settling agent and the like, mixing and rapidly dispersing the components as component a; weighing corresponding silicon sol as component b; and mixing, slowly dispersing, standing and curing components a and b for obtaining the nano ecological paint. The invention has the advantages that the powdery bodies of the nano cobalt oxide and the zirconia have self-radiation and far-infrared release functions; the nano powder is attached to the tube wall of the carbon tube to form a netty one-dimensional heat transmitting channel; and the heat transmitting characteristic of the paint is enhanced.

A cooling passageway for use in an airfoil portion of a turbine engine component having a pressure side wall and a suction side wall is provided. The cooling passageway comprises a serpentine flow passageway through which a cooling fluid flows. The passageway has an inlet through which cooling fluid is introduced into the passageway, an inlet channel for receiving the cooling fluid, an intermediate channel, and an outlet channel. A divider rib extends from a location in the inlet channel to a termination in the intermediate channel to improve the heat transfer coefficients associated with the passageway.

The invention provides a temperature equalization plate. The temperature equalization plate comprises a pressure resistant shell and a heat transfer working medium, and the shell is composed of an upper base plate (1) and a lower base plate (2); the base plates are provide with working medium tanks (3), capillary cores (4) and reinforcing column modules (5); the upper base plate (1) and the lowerbase plate (2) are welded to form a closed working medium cavity; and the working medium cavity is filled with the heat transfer working medium. A temperature equalization plate manufacturing method includes the steps of reinforcing column distribution calculation, base plate preparation, capillary core preparation, base plate welding, heat transfer working medium filling, filling port clamping sealing and finish machining. According to the temperature equalization plate and the temperature equalization plate manufacturing method, the manufacture of the thin high-heat transfer performance temperature equalization plate is can realized, and great advantages are achieved in the application of the high-power component heat dissipation field with narrow installation space.

The invention discloses a longitudinal spiral inner fin tube, which comprises an outer tube and a core tube sleeved concentrically and an inner fin nested and wound around the tube core in a circumambient way between the outer tube and the core tube, wherein the inner fin is connected with the outer tube and the core tube by adopting a braze welding way, the inner fin is formed by bending a corrugated inner fin plate and a cylindrical shape longitudinal spiral inner fin tube is formed between the outer tube and the core tube, and a plurality of longitudinal spiral type circulating passages are distributed on the longitudinal spiral type inner fin tube; the included angle between the corrugation texture of the corrugated inner fin plate and the horizontal direction is Alpha, wherein Alpha is larger than or equal to 15 degrees and lower than or equal to 85 degrees; the corrugation shape of the corrugation adopts continuous periodic functions, and the longitudinal amplitude height H is equal to the spacing between the outer tube and the core tube; the greater viscosity of the medium circulated in the inner fin is, the sparser the corrugation, the longer the corrugation wavelength Lambada, the less amount of the longitudinal spiral type circulating passages, and the greater the degree of Alpha; the reverse is also true. The structure of the longitudinal spiral inner fin tube is simple and the machining and fabrication is simple and convenient, the heat transfer area in the tube can be effectively increased, and simultaneously the flow resistance in the tube can also be effectively reduced.

The invention discloses a solar cell panel temperature adjusting and controlling device, belonging to the field of photovoltaic cell panel temperature control. The solar cell panel temperature adjusting and controlling device is characterized in that a phase change material box body is welded and connected with a device shell, and a tempered glass plate is placed at the upper port of the device shell; two long side faces of the device shell are welded with outside radiating ribs; and a solar cell panel base plate is welded with the phase change material box body, an inside needle rib is welded on the solar cell panel base plate, and a phase change material and a thermal diode material are respectively injected into the temperature adjusting and controlling device by forming a heat storage material injection hole and a thermal diode material injection hole. The solar cell panel temperature adjusting and controlling device disclosed by the invention has the advantages that the heat transfer characteristic of a phase change heat storage material is strengthened, and the overall heat conducting property of the device is enhanced, so that the heat dissipation effect of a solar cell panel working under a high temperature condition is achieved, the normal working temperature of the solar cell panel is maintained, the service life of the solar cell panel is prevented from being shortened due to over temperature and heat, the generating efficiency can not be lowered, the influence of a low-temperature environment on the solar cell panel and the tempered glass plate is weakened, and the frost crack is prevented.

The invention relates to a magnetic nano-fluid light condensation type photovoltaic combined heat and power generation device. The magnetic nano-fluid light condensation type photovoltaic combined heat and power generation device comprises a photovoltaic cell assembly module, a heat storage assembly, a photo-thermal assembly and a magnetic field adjusting assembly; the heat storage assembly comprises a heat reservoir and a heat exchange pipe; the heat reservoir is internally provided with phase change media; an inlet and an outlet of the heat exchange pipe are exposed out of the heat reservoir; the photo-thermal assembly comprises a circulating pump, a first header, a second header, multiple transparent heat gathering pipes, multiple uniform light bodies, Fresnel lenses and a framework; the uniform light bodies are polygon prisms; the area of the upper surface of the polygon prisms is greater than that of the bottom of the polygon prisms; the magnetic field adjusting assembly comprises S-shaped magnets and coils wound around the arms of the S-shaped magnets, one heat gathering pipe is arranged between the arms of every two adjacent magnets, and the S-shaped magnets and the heat gathering pipes are located on the same plane; the heat exchange pipe, the heat gathering pipes, the circulating pump, the first header and the second header are all internally provided with nano-fluid which can circulate and flow. The magnetic nano-fluid light condensation type photovoltaic combined heat and power generation device has the advantages of being simple in structure, capable of improving the solar energy utilization ratio, and the like.

The invention relates to a magnetic nanofluid plate type solar cogeneration unit which comprises a photovoltaic cell panel as well as a photovoltaic cell cooling assembly, a photo-thermal assembly and a magnetic field adjusting assembly, wherein the photovoltaic cell cooling assembly comprises a first header, a second header and a cooling tube, the cooling tube is mounted on the back surface of the photovoltaic cell panel, and the first header and the second header are communicated by the cooling tube; an insulation layer is further arranged on the back surface of the photovoltaic cell panel; the photo-thermal assembly comprises a heat exchanger, a circulating pump and a transparent hollow plate which is arranged on the front surface of the photovoltaic cell panel; the magnetic field adjusting assembly comprises a U-shaped magnet and a coil, the U-shaped magnet is wound with the coil, the hollow plate is covered with the magnetic field adjusting assembly, and the coil is located on two sides of the hollow plate; the first header, the second header, the cooling tube, the heat exchanger, the hollow plate and the circulating pump are filled with nanofluids and form a circulating loop by the aid of the circulation pump. The magnetic nanofluid plate type solar cogeneration unit has the advantages that the structure is simple, the solar energy utilization ratio can be improved and the like.

The invention discloses an oval twisted pipe heat exchanger with vortex generators. The oval twisted pipe heat exchanger is mainly composed of parts of a pipe box, pipe plates, a shell, heat exchangepipes, ends and the like. Each heat exchange pipe comprises an inlet straight pipe segment, an outer finned pipe with an oval twisted pipe structure and an outlet straight pipe segment, and the interior of each heat exchange pipe is of an oval spiral twisted channel structure. Each outer finned pipe comprises an oval twisted pipe and finned plates which are provided with the corresponding vortex generators and can be closely attached to the oval twisted pipe. The finned plates of each outer finned pipe are divided into the upper finned plate and the lower finned plate, and the two finned plates of each outer finned pipe are brazed to the corresponding oval twisted pipe through the brazing process. The structures of the vortex generators on the finned plates can be triangular forms, dual blade forms and other forms. The vortex generators can generate vortex structures, high-energy fluid of main flow is entrained into a boundary layer through the vortex entrainment function, low-energy fluid in the boundary layer can be reversely pushed out of the boundary layer to enter the main flow, and energy exchange of inner fluid and outer fluid is completed; and the boundary layer is thinned,and therefore heat resistance is reduced.

The invention discloses a rotary air preheater heat transfer corrugated plate with interrupted holes and a processing method for the rotary air preheater heat transfer corrugated plate. The interrupted holes are formed in the rotary air preheater heat transfer corrugated plate; the rotary air preheater heat transfer corrugated plate is formed by alternately overlapping a first locating plate and a second locating plate; the second locating plate is 0.4-0.8mm thick; the first locating plate is formed by connecting an incision and a ripple with each other; the first locating plate is 0.4-0.8mm thick; the interrupted holes are round and rectangular in shape, and the size, the spacing and the arrangement mode of the interrupted holes are comprehensively obtained after being verified by the strict technical design and experimental results; by forming the round interrupted holes in the carbon steel flat plate, and then, rolling is performed through a corrugated roller to form the rotary air preheater heat transfer corrugated plate with the interrupted holes. According to the novel rotary air preheater heat transfer corrugated plate with the interrupted holes, the heat-transfer characteristic of the existing rotary air preheater heat transfer corrugated plate can be effectively improved, and the flow resistance in the channel of the existing rotary air preheater heat transfer corrugated plate is reduced, and meanwhile, steel consumption required for processing the rotary air preheater heat transfer corrugated plate is reduced.

The invention provides a W flame boiler with double-cyclone-barrel thick and thin pulverized coal separation type combustors, and relates to a power station boiler which adopts the flexible peak regulation technology. The W flame boiler with the double-cyclone-barrel thick and thin pulverized coal separation type combustors is used for solving the problems that a W flame boiler is poor in ultralowload stable combustion and operation capacity, and the flexible peak regulation load cannot be 20%. The W flame boiler comprises an upper combustion chamber, a lower combustion chamber, a front boiler arch, a rear boiler arch, a front wall, a rear wall, the multiple double-cyclone-barrel thick and thin pulverized coal separation type combustors and multi-layer arch bottom secondary air nozzles. Each double-cyclone-barrel thick and thin pulverized coal separation type combustor comprises two thick pulverized coal airflow nozzles and two exhaust air nozzles. The upper combustion chamber, the front boiler arch, the front wall, the lower combustion chamber, the rear wall and the rear boiler arch are combined to form a boiler body. The multi-layer arch bottom secondary air nozzles are arrangedon the front wall and the rear wall in sequence from top to bottom. The double-cyclone-barrel thick and thin pulverized coal separation type combustors are installed on the front boiler arch and therear boiler arch in a linear mode, and the corresponding thick pulverized coal airflow nozzles and the corresponding exhaust air nozzles of each double-cyclone-barrel thick and thin pulverized coal separation type combustor communicate with the boiler body. The invention belongs to the field of boilers.

The invention relates to a parallel small diameter heat pipe enhanced heat exchange device for recovering medium and low temperature flue gas waste heat, aims to solve the problem of waste of medium and low temperature flue gas waste heat generated in small combustion equipment primarily, recovers the flue gas waste heat by means of parallel small diameter heat pipes to produce hot water or heat other substances, and is suitable for recovering waste heat of small flow flue gas or a discontinuous small flow heat source. The parallel small diameter heat pipe enhanced heat exchange device is primarily characterized in that the parallel small diameter heat pipe enhanced heat exchange device is good in heat transfer property, compact in structure, small in size, easy to process and low in cost,and can achieve self transfer of heat and efficient recovery of waste heat, so that the exhaust gas temperature is reduced greatly and the integral efficiency of the system is improved. The device isquite suitable for heat recovery of small capacity medium and low temperature flue gas waste heat and discontinuous waste heat resources, and a heating container is taken conveniently.

The invention discloses an H-shaped finned tube with radially-formed slits on the surface. The H-shaped finned tube comprises a base tube and a plurality of fin sets which sleeve the two sides of theouter wall of the base tube correspondingly and are arranged in the axial direction of the base tube; each fin set is composed of two fins, the fins for each fin set are rectangular and are connectedwith the outer wall of the base tube in a symmetrical mode through side grooves of the fins arranged on the sides, next to the base tube, of the fins, the two fins for each fin set are located on thesame horizontal plane perpendicular to the axial direction of the base tube, a certain gap is formed between the two fins for each fin set, and the plurality of slits are formed in the surfaces of thefins; and the included angles between the slits and the incoming flow direction range from 40 degrees to 50 degrees, and the slits are symmetrically arranged on the two sides of the connecting linesbetween the center of the base tube and the four corners of the fins. According to the H-shaped finned tube, disturbance can be well carried out through the slits on the surfaces on the exterior fluidso as to damage the boundary layer to strengthen the heat transfer; then, the directions of the slits hardly affect the heat conduction inside the finned tube, and therefore, the fin efficiency cannot be reduced; and again, the directions of the slits and the flowing direction can reduce the flowing resistance which is increased due to the damage of the boundary layer as much as possible while the disturbance is formed and the damage boundary layer is damaged, moreover, the flowing friction area is reduced, and due to the two factors, the flowing resistance of the fined tube is integrally reduced.

The invention discloses a W flame boiler adopting turbulent burners, relates to a power station boiler adopting a flexible peak shaving technology, and belongs to the field of boilers. The invention aims to solve the problem that the W flame boiler adopts the turbulent pulverized coal burners in the prior art, the maximum peak shaving capacity of a boiler with a common micro-oil ignition mode is about 50%, the requirement of the government on the flexible peak shaving capacity of the power station boiler cannot be met; the W flame boiler adopting the turbulent burners comprises an upper hearth, a lower hearth, a front furnace arch, a rear furnace arch, a front wall, a rear wall and a plurality of turbulent pulverized coal burners, each turbulent pulverized coal burner comprises an adjustable cone pulling rod, a micro oil ignition gun and a flow guide cone, wherein the micro oil ignition guns are installed in the adjustable cone pulling rods, the bottom ends of the adjustable cone pulling rods are fixedly installed in the flow guide cones, the adjustable cone pulling rods, the micro oil ignition guns and the flow guide cones are installed in shells of the turbulent pulverized coal burners, and the turbulent pulverized coal burners are installed on a front furnace arch water wall and a rear furnace arch water wall correspondingly.

The invention relates to an accumulation method for a grillwork particle composite bed. The upper and lower layers of positioning grillworks and spherical particles are pre-assembled to form a spherical-layer entirety, a container is filled with the spherical-layer entirety layer by layer at the top of the container, when the grillworks and particles descend, the relative positions of the grillworks and particles are invariant, and an orderly accumulation structure can be automatically formed. According to the accumulation method for the grillwork particle composite bed, multiple different orderly accumulation modes and multi-gradient orderly accumulation structures can be achieved, and compared with a grilling particle composite accumulation bed, under the condition of maintaining the heat transfer characteristic at the same level, by reasonably designing an accumulation structure, the heat transfer performance is possibly further improved.

The invention relates to an anodic protection baffle rod type acid cooler which comprises an acid cooler shell (12) and is characterized in that a heat exchange tube box is arranged in the acid cooler shell (12); the heat exchange tube box comprises a plurality of baffle plates (10); the baffle plates (10) comprise baffle rods (a) and baffle rings (b); a plurality of baffle rods (a) are arranged on the baffle rings (b), and the baffle rods (a) on adjacent baffle rings (b) are arranged in a staggered mode to form a spatial staggered grid structure; and a heat exchange tube (13) is arranged in the spatial grid structure. The anodic protection baffle rod type acid cooler of the invention has reasonable design, reduces the vibration of the heat exchange tube, improves the heat transfer coefficient, reduces the consumption of the kinetic energy, has good anodic protection effect, low corrosion rate, safety and reliability, and absolutely can be used under the technological conditions of high acid content; and compared with an anodic protection baffle plate type acid cooler, the comprehensive economic benefit is greatly improved.

The invention discloses a W-flame boiler adopting a slit type combustor, and relates to a W-flame boiler adopting a flexible peak regulation technology. The W-flame boiler adopting the slit type combustor aims to solve the problems that when the load of the conventional W-flame boiler is lower than 50 percent by adopting an oil gun ignition mode, the combustion is unstable and even the fire is extinguished; and the flexible peak regulation capacity of the boiler needs to reach 20% of full load, but a boiler meeting the condition does not exist in the prior art. The W-flame boiler comprises anupper hearth, a lower hearth, a front boiler arch, a rear boiler arch, a front wall, a rear wall, a plurality of straight flow gap type combustors and a plurality of grading air nozzles; and each straight flow gap type combustor comprises a hollow rotational flow adjusting pull rod, a tiny-oil burning torch and a pulverized coal flow guiding body, wherein the tiny-oil burning torch is installed inthe hollow rotational flow adjusting pull rod, the bottom end of the hollow rotational flow adjusting pull rod is fixedly connected with the pulverized coal flow guiding body, and the hollow rotational flow adjusting pull rod, the tiny-oil burning torch and the pulverized coal flow guiding body are installed in the straight flow gap type combustor shell. The invention belongs to the field of boilers.

The invention belongs to the technical field of industrial sewage treatment, and discloses a pretreatment method of molasses alcohol wastewater. The pretreatment method comprises the steps of performing sedimentation, filtration and rectification pretreatment on the molasses alcohol wastewater; and specifically comprises the following steps: (1) sedimentation: the molasses alcohol wastewater is added into a gravity sedimentation pool, and a flocculating agent is put into the pool through a concentric circle distributor, the wastewater after the flocculation and gravity sedimentation treatmentis filtered through a filter and then subjected to microfiltration treatment through a membrane separation device; and (2) rectification: after the microfiltration treatment, the wastewater enters a rectification tower for rectification to obtain a tower top product and a tower bottom product which are subjected to subsequent processing separately. According to the pretreatment method, the separation efficiency is high, the stability is good, the pertinence is high, colloids, flocculates and other solid particles in the wastewater can be effectively removed, light components in the wastewatercan be well separated and recovered, and load of the subsequent treatment process can be effectively reduced, thereby ensuring that the wastewater is finally discharged up to standards, therefore, thepretreatment method is suitable for mass production.

The invention discloses a mine cooling system using an ice slurry cold storage technology on a secondary side fluid, and relates to a mine cooling system. A primary refrigerating medium is cooled to 10 DEG C below zero by a low-temperature screw ethylene glycol unit 1 of the system; 35% of the ethylene glycol is conveyed to an ice slurry preparation device 3 by a primary refrigerating medium pump; soft and fluffy ice crystals particles are generated on the tube wall through heat exchange of the primary refrigerating medium in the ice slurry preparation device and secondary refrigerating medium containing an additive blocking the growth and antifreeze properties of the ice crystal; the ice crystal particles are scraped off through a reciprocating polyurethane scraping device to form IPF (ice packing factor) 2%-30% ice slurry; the IPF 2%-30% ice slurry is conveyed to a gate way air cooling unit 6 and a mining air cooler 10 by a cold insulation pipeline 5, so as to exchange heat with air flow in the air cooler, thereby the temperature of the air flow is reduced. Through the heat exchange of the cooling water and air flow inside a re-cooling device 9, the temperature of the cooling water is reduced to 32 DEG C, and then the cooling water is returned to the low-temperature screw ethylene glycol unit 1 to complete underground heat removal circulation. The system can be widely applied to controlling high-temperature heat damage to underground mining work surfaces of coal mines and non-coal mines.

The invention discloses a polyimide glue poured motor winding insulation structure and a preparation method thereof. The method comprises the steps of wrapping the surface of a metal wire with a high temperature resistant polyimide/adhesive resin composite film, sintering at 320-370 DEG C to melt the adhesive resin, and bonding the high temperature resistant polyimide film into a whole to form a first wrapping insulation layer; performing oxidation etching treatment on the surface of the first wrapping insulating layer; after the metal wire is made into a motor stator electromagnetic wire winding, pouring the high-temperature-resistant thermosetting polyimide resin adhesive, and heating and curing to form a resin pouring insulating layer. Compared with the prior art, the manufacturing method of the polyimide glue poured motor winding insulation structure has important influences on the improvement of the heat resistance grade, the operation reliability/durability and the service life of a special motor, and has bright application prospects in the field of heavy oil reservoir exploitation.

The invention discloses a tubular falling film spraying device which comprises an inner tube, a sleeve and a drainage tube. The tube outer diameter of the sleeve and the drainage tube is the same as the tube outer diameter of a working tube; the outer diameter of the inner tube is smaller than that of the sleeve; an opening is formed in the top of the inner tube; a line of outflow holes is formed in the bottom of the sleeve along a straight line; the inner tube is centered inside the sleeve; a semicircular surface spacer is embedded into the top of an inner wall of the sleeve, and a lower edge of the sleeve is just in contact with the outer wall of the inner tube; a midline of the opening of the inner tube, an axis of the inner tube and a midline of the outflow holes in the bottom of the sleeve are positioned on the same vertical plane; the front and rear ends of the opening of the inner tube need to be flush with the outer edge of the outflow hole on the outermost side of the sleeve; more than one sealing tube clamp is respectively used at gaps between the inner tube and the left and right ends of the sleeve; the drainage tube is arranged just under the sleeve, and a spacing between the drainage tube and the sleeve is 2mm; the drainage tube and the sleeve are fixedly welded by welding or a tube plate. According to the device disclosed by the invention, spraying media can be uniformly distributed, and excellent flow pattern and high heat-transfer characteristics are obtained, so that the efficiency of the device is improved.

This invention relates to concentrating solar power systems with application of parabolic dish-shaped reflectors.

A proposed CSP module applies a two-phase thermosiphon intended to transport heat generated by concentrated sunlight on a sunlight receiver onto the external surface of a heat exchanging pipe. The outer end butt of a distal plug, which seals the lower section of the two-phase thermosiphon, is provided with a sunlight absorbing coating.

A tracking manipulator is installed below a dish-shaped mirror and joined with its supporting structure; it provides orientation of the axis of the dish-shaped mirror towards the sun.

The walls of the two-phase thermosiphon are provided with a metal vacuum insulated jacket, which has a flexible middle sub-section of its lower section.

Design of the middle and distal sub-sections of the lower section of the two-phase thermosiphon allows accompanied orientation of the distal sub-section axis of the two-phase thermosiphon towards the sun.