158results about How to "Improve heat transfer rate" patented technology

A process for thermally crystallizing a polyester polymer by introducing pellets into a liquid medium having a temperature of at least 140° C. within a liquid medium zone and crystallizing the submerged pellets at or above the vapor pressure of the liquid medium without increasing the molecular weight of the pellets, and while the pressure on at least a portion of the pellets is equal to or greater than the vapor pressure of the liquid medium, separating at least a portion of said pellets and at least a portion of the liquid medium from each other. The crystallization is desirably conducted in the liquid medium zone without mechanically induced agitation. Optionally, the pellets are formed by an underfluid pelletizer.

There is also provided a process for thermally crystallizing solid pellets in a pipe by directing a flow of solid pellets in a liquid medium through a pipe having an aspect ratio L/D of at least 50:1, wherein the solid pellets are crystallized in the pipe at a liquid medium temperature greater than the T_g of the polyester polymer.

A process for crystallizing a polyester polymer by introducing a molten polyester polymer, such as a polyethylene terephthalate polymer, into a liquid medium at a liquid medium temperature greater than the T_g of the polyester polymer, such as at a temperature ranging from 100° C. to 190° C., and allowing the molten polyester polymer to reside in the liquid medium for a time sufficient to crystallize the polymer under a pressure equal to or greater than the vapor pressure of the liquid medium. A process flow, underwater cutting process, crystallization in a pipe, and a separator are also described.

A solid state lighting apparatus characterized by its compact, predominately axial form factor, utilizes an axial thermal transfer member constructed of Highly Oriented Pyrolytic Graphite (HOPG) to aid in the dissipation of waste heat generated during its operation. The lighting apparatus is chiefly comprised of a Light Emitting Diode (LED) die array and circuit structure assembly affixed to one end of the axial thermal transfer member and further includes a transversely mounted heat sink structure, running the length of, and being affixed to, opposite sides of the axial member. The axial member serves to distribute waste heat down its length, and simultaneously, into a transverse plane where the waste heat is dissipated into the transversely mounted heat sink structure. A fan may be utilized to evacuate the waste heat out of the lighting apparatus and into the ambient environment.

The invention provides a steelmaking-continuous casting-hot rolling integrated scheduling method and system. The method comprises the steps of S1, performing initialization to obtain a steelmaking-continuous casting scheduling plan; S2, obtaining a hot rolling scheduling plan according to the current steelmaking-continuous casting scheduling plan as well as a working order demand, a production line model, a current production rhythm, a rolling unit length constraint, and a rolling unit internal adjacent plate blank width, thickness and hardness jump constraint; S3, determining whether an inventory change situation meets a preset inventory optimization plan or not according to the current steelmaking-continuous casting scheduling plan and the hot rolling scheduling plan, and if the preset rule is met, entering the next step, otherwise, adjusting current parameters related to inventory optimization and returning to the step S1; S4, obtaining overall heat supply rate data according to the current steelmaking-continuous casting scheduling plan and the hot rolling scheduling plan; S5, judging whether an integrated scheduling stop condition is met or not, and if the stop condition is met, performing the scheduling plan, otherwise, performing the next step; and S6, performing re-optimization to generate the steelmaking-continuous casting scheduling plan, and returning to the step S2.

An educational game (and learning management system and methods pertaining to the same) can be configured for the effective teaching of advanced educational curriculum, such as STEM subjects for high school and above. The educational game is configured to integrate social context, real scientific principles and strategic tradeoffs within game mechanisms. This covert teaching and testing environment promotes exploration, individualized discovery, repeat engagement, and systems thinking and planning skills. The educational game can be dynamically and procedurally generated.

Various types of food preparation pans such as but not limited to food preparation pans used for baking, steaming, chilling, freezing and molding various foods and food combinations intended for consumption are disclosed. The pan includes a plurality of thermal conveyance depressions protruding in a vertically oriented disposition relative to a horizontal inner pan bottom surface; and upwardly projected depressions in an outer pan bottom surface of the thermal conveyance depressions to form hollow depressions spaced in between by bridging portions.

The invention provides a method for manufacturing an Al-Al composite inflation-typed pipeline plate, comprising the steps as follows: a. blanking and punching; b. cleaning and drying; c. printing; d. heating; e. hot rolling; f. cold rolling; g. cleaning; h. annealing; i. inflating; j. marking, shearing and punching; k. welding connecting pipe; l. whole detecting, etc. The composite aluminium pipeline plate processed by the method can increase or reduce the proportion of the internal chamber and the heat exchanging surface in extremely large range, and freely changes the geometrical shape, diameter and volume of the pipeline. The component is completely a whole and has high heat transfer rate and extremely small temperature difference of the medium and the heat exchanging surface. Compared with the traditional heat exchanger, the Al-Al composite inflation-typed pipeline plate has the supreme characteristic that the working pressure endurance value is large and generally keeps at 30kgf/cm<2> for long-term operation. The Al-Al composite inflation-typed pipeline plate has wide application and can be used in internal-heat type or external-heat type and is an extremely good exhaust-reducing and energy-saving product.

The invention discloses a reaction apparatus with external circulation equipment and a method for the reaction apparatus to control reaction process. The reaction apparatus comprises a reaction kettle as well as a fluid conveyer and a heat exchanger. One end of the fluid conveyer is connected to the lower part of the reaction kettle by a pipeline, while the other end is connected with the intake of heat exchanger by the pipeline, and the outlet of the heat exchanger is connected with the upper part of the reaction kettle by the pipeline, thereby constructing an external circulation passage for reactants. Stir and heat exchange are carried out to the reactants by the external circulation passage. The control carried out to the liquid-phase reaction by adopting the reaction apparatus with external circulation equipment and the method for the reaction apparatus to control reaction process is characterized by high heat exchange rate in the reaction process and suitability to a reactant system with a wide viscosity range, meanwhile, the construction cost and operational cost are both relatively low.

The invention discloses a titanium alloy super hydrophobic-super hydrophilic surface. Multiple sub arrays are distributed on the surface of a titanium alloy. Multiple super hydrophobic areas and multiple super hydrophilic areas in each sub array are arranged alternately in a wedge shape or a triangular shape, and super hydrophilic gathering areas are distributed between the sub arrays. The super hydrophobic surface has the good super hydrophobic performance, drop adhesion is very little, and rolling is extremely easy; drops can be adsorbed by the super hydrophilic areas, the drops at the top ends of the super hydrophilic areas in the wedge shape or the triangular shape can rapidly move towards the bottom of the wedge shape or the triangular shape under the drive of Plath pressure generatedby the wedge shape or the triangular shape, the super hydrophilic areas arranged alternately with the super hydrophilic areas can repel directional transportation of the drops, under the synergisticeffect of the super hydrophobic areas and the super hydrophilic areas, the condensation small drops can be gathered into the hydrophilic gathering area constantly, high-concentration-ratio self-driving water gathering is achieved, disengaging of the drops is accelerated, and therefore the condensation heat transfer efficiency is improved. The invention provides a preparing method and application of the titanium alloy super hydrophobic-super hydrophilic surface.

A system having a reactor for continuous processing of fluid is provided herein. The reactor, in general, includes an outer vessel to accommodate fluids to be processed or used in connection therewith, an inner vessel situated within the outer vessel to serve as an energy exchange surface, and an annular space defined between the outer and inner vessels and along which processing of the fluids can be implemented. The continuous thin film reactor can be used to perform, for example, distillation and evaporation, fluid-fluid or solid-fluid-fluid reactions, organic reactions, cooling, and desalination.

A fluid cooled fastener assembly for use in a high temperature environment and a method of fluid cooling a fastener assembly are provided. The fastener has a coolant passage extending axially through the fastener and a coolant collector coupled to an end of the fastener. The coolant collector includes a collector opening configured to capture a portion of a cooling fluid flowing past the coolant collector and a contoured passage in communication with the collector opening and the passage in the fastener. The contoured passage is configured to accelerate the cooling fluid captured by the coolant collector and to direct it into the coolant passage in the fastener.

Stranded natural gas is sometimes liquefied and sent to other countries that can use the gas in a transport ship. Conventional receiving terminals use large cryogenic storage tanks to hold the liquefied natural gas (LNG) after it has been offloaded from the ship. The present invention eliminates the need for the conventional cryogenic storage tanks and instead uses uncompensated salt caverns to store the product. The present invention can use a special heat exchanger, referred to as a Bishop Process heat exchanger, to warm the LNG prior to storage in the salt caverns or the invention can use conventional vaporizing systems some of which may be reinforced and strengthened to accommodate higher operating pressures. In one embodiment, the LNG is pumped to higher pressures and converted to dense phase natural gas prior to being transferred into the heat exchanger and the uncompensated salt caverns.

The slag-cooling machine adopts stable swing balance shaft structure for supporting the hot slag conveyance heat-absorbing box on the machine frame, and adopts swing driving mechanism to make the boxbody reciprocally-swing in tilet angle of 10-30 deg. devialed from centre to make hot stag come into cooling box implement snakelike downslide and rolling along the heat-absorbing water pipe and heat-absorbing guide plate, so that it can greatly increase contacting area of hot slag and heat-absorbing medium and can make hot slag uniformly contact with cooling wall. Said ivnention is simple in structure, its wear abrasion is less and cost is low.

The invention relates to a method for controlling centrifugal granulation of molten blast furnace slag. The method comprises the following steps of: 1) uniformly arranging a plurality of temperature measuring devices along the direction vertical to a water cooled wall; 2) embedding a genetic algorithm program in a PLC controller, comparing a few temperature measuring points, and optimally judging and predicating a position with a minimum temperature value of the temperature measuring points; and 3) controlling a hydraulic device under a rotor by the PLC controller, and adjusting the height of a rotor to the position with the minimum temperature value. The method for controlling the centrifugal granulation of the molten blast furnace slag has the advantages of being compact and simple in structure and easy in operation, avoiding local overheating of the water cooled wall, prolonging the service life of slag centrifugal granulation devices, improving heat exchange rate and providing convenience for energy source recovery.

Disclosed is a spiral and axial circulating cooling water channel structure for a motor. The cooling water channel structure comprises a stator iron core of the motor, a cooling water channel is arranged in the iron core, the cooling water channel comprises a first spiral channel and a second spiral channel which are adjacent and extend parallelly, the inlet end of the first spiral channel is adjacent to the outlet end of the second spiral channel, and the outlet end of the first spiral channel is adjacent to and communicated with the inlet end of the second spiral channel. The first spiral channel and the second spiral channel are arranged parallelly along the axial direction of the iron core. Cooling water flows from the front end of the stator iron core to the back end of the stator iron core, then flows back to the front end, can evenly cool the iron core, and reduce the temperature difference between the front end and the back end of the stator iron core. The cooling water generates turbulence during backflow, which reduces the thermal resistance, and increases the heat exchange coefficient and the ratio of heat exchange, so that temperature increasing of the motor can be reduced, the power density can be improved; and the sealing can be achieved by using one rubber gasket, and the reliability and the process are remarkably improved.

The invention provides an oil cooling motor. A motor body is provided with a cooling oil circulation path which can circulate the cooling oil. A cooling oil passage which is a part of the cooling oil circulation path is arranged on a cylinder cover by surrounding a hole of a sparking plug. In the oil cooling motor, the cooling oil which is supplied to the cooling oil passage around the sparking plug is not easy to become hot, so the cooling performance around the hole of the sparking plug is improved. The hole (67) of the sparking plug is arranged on a projection image of the plane projection which is orthogonal to an axial line (C) of a cylinder barrel and on one side of a plane (PL). The plane includes a linear line which connects the centers of opening parts of a gas inlet (24) and a gas outlet (25), and the opening parts are open to a combustion chamber (22). A cooling oil supplying passage (61) is arranged on one side of the plane and is arranged on the cylinder cover (15), and is closer to the gas outlet than the gas inlet. The cooling oil supplying passage forms a part of the cooling oil circulation path and is connected with an upstream end of the cooling oil passage around the sparking plug.

The invention discloses a preparation method of a heat exchanger with efficient heat exchange and corrosion resistance and provided with a graphene protective membrane. The preparation method is characterized by comprising the following steps: (1) firstly cleaning a copper pipe; (2) growing graphene on the surface of the copper pipe: setting the growth temperature at 800 to 1,200 DEG C, feeding protective gas into a reaction chamber, quickly heating the reaction chamber to the growth temperature of the graphene, then feeding methane gas, keeping feeding the methane gas for 8 to 15 minutes, then quickly cooling the reaction chamber, and cutting the feeding of all types of gas, wherein the growth time of the graphene is equal to the methane feeding time; and (3) controlling the pressure of the reaction chamber at 8 to 15 mbar in a graphene preparation process, thus the high-quality graphene protective membrane is prepared on the surface of the copper pipe, and covers copper to prevent corrosion. The preparation method disclosed by the invention is proper in cost, suitable for large-batch production and relatively high in membrane forming quality.