84 results about "Convective heat transfer" patented technology

The application discloses an OTR tire pattern heat dissipation hole parameter design and heat dissipation strengthening method, and belongs to the tire structure design field.The method firstly establishes a tire parameterized model containing a heat dissipation hole, determines the length, width, depth and inclination angle of the heat dissipation hole as key design variables; subsequently, sample points are generated in the design space by using Latin hypercube sampling, and the average convective heat transfer coefficient corresponding to each sample is calculated through numerical simulation; then, a radial basis function proxy model with the design variables as input and the heat transfer coefficient as response is constructed, and the accuracy thereof is verified; thereafter, the design variables are globally optimized by using an adaptive simulated annealing algorithm with the maximization of the average convective heat transfer coefficient as the target, and the optimal structure parameters are obtained; finally, the optimization scheme is modeled and numerically verified.The application significantly improves the heat dissipation efficiency of the OTR tire through multi-parameter collaborative optimization, has the advantages of short design cycle, strong optimization ability and good versatility, and is helpful to prolong the tire life.

The invention relates to the technical field of power system safety protection, and particularly provides a power grid transmission line ice melting thickness prediction method and device based on numerical simulation. Comprising the following steps: substituting numerical values of ice melting influence parameters of the power grid transmission line into a pre-constructed convective heat transfer coefficient calculation formula, and calculating a convective heat transfer coefficient of the power grid transmission line; determining the ice melting thickness of the power grid power transmission line based on the convective heat transfer coefficient of the power grid power transmission line; wherein the pre-constructed convective heat transfer coefficient calculation formula is obtained in a numerical simulation mode. According to the technical scheme provided by the invention, quantitative and accurate prediction of the ice melting thickness under the dynamic meteorological condition can be realized.

Method for supplying coolant to an electric battery (106) supplying electrical energy to a powertrain of an electric vehicle (20), comprising: determining a heat dissipation rate of the electric battery (106) caused by charging the electric battery (106) at a predetermined charging rate; determining a convective heat transfer coefficient (404) for dissipating the heat dissipated by the electric battery (106) during charging; determining a maximum permissible flow rate (403) of the vehicle's internal coolant circuit (105);Determining whether an optimal flow rate (405) of the coolant from an external coolant source (64) meets the conditions of the convective heat transfer coefficient (404) and the maximum permissible flow rate (403), and charging the electric battery (106) at the specified charging rate if the optimal flow rate (405) of the coolant from an external coolant source (64) meets the conditions of the convective heat transfer coefficient (404) and the maximum permissible flow rate (403), wherein charging the electric battery (106) includes supplying coolant from the external coolant source (64) at the optimal flow rate (405).

This invention provides a computational method, system, and computer equipment for fluid-structure interaction heat transfer. Addressing the problem of extremely slow convergence in the later stages of long-tail iterations in existing weakly coupled algorithms, this invention proposes a two-stage decoupling acceleration strategy. The first stage employs a fluid-solid weakly coupled algorithm with an early truncation mechanism: when the global temperature rise has not yet converged, but the convective heat transfer coefficient at the interface reaches a stable convergence state first, the bidirectional fluid-solid iteration is stopped, and the current convective heat transfer coefficient is extracted. The second stage applies this convective heat transfer coefficient as a separate thermal boundary condition to the solid computational domain, stopping the flow field equation calculation and rapidly solving the solid's heat conduction equation in a unidirectional decoupled state until a complete steady state is reached. This invention cleverly utilizes the spatiotemporal differences in the convergence speed of characteristic physical quantities, eliminating redundant iterations without sacrificing engineering accuracy and significantly improving the solution efficiency of heat transfer simulation.

This invention discloses an array-transformable energy storage battery pack, relating to the field of energy storage technology. To address a specific problem, it includes several placement cabinets arranged equidistantly along a straight line. Each placement cabinet has several heat insulation plates arranged longitudinally, with a placement compartment formed between adjacent heat insulation plates. It also includes a battery casing, a movable cover, a lifting mechanism, a blower mechanism, and a water-cooling mechanism. This invention, through the cooling fan, blower mechanism, and water-cooling mechanism, matches the heat dissipation requirements of the battery cells across the entire load range. Under low-load conditions, the internal cooling fan built into the battery casing achieves internal circulation heat dissipation, meeting the heat dissipation requirements of normal operation. Under medium-to-high load conditions, the blower mechanism is used to enhance convective heat transfer. Under extremely high load conditions, the blower mechanism and water-cooling mechanism are activated at full power for heat dissipation, improving the heat dissipation efficiency of the battery cells and solving the problem of heat not being effectively dissipated and heat accumulation inside the battery during high-load operation.

This invention discloses a method for manufacturing an outer nozzle of a baffle nozzle with a sweating cooling function. The method uses high-temperature alloy powder as raw material and performs selective laser melting forming according to a preset laser scanning path and laser selective melting forming parameters to obtain the outer nozzle of the baffle nozzle with a sweating cooling function. The laser scanning path is determined based on a three-dimensional model, which is a ring-shaped periodic porous structure with sweating cooling. This invention utilizes the concept of sweating cooling in the outer nozzle of a liquid rocket engine baffle nozzle, using fuel as the cooling medium. As the fuel flows through the outer nozzle, it undergoes strong convective heat transfer with the nozzle. Simultaneously, a liquid film forms on the surface of the outer nozzle, hindering heat transfer between the outer nozzle and the high-temperature mainstream, thus achieving thermal protection of the outer nozzle and preventing ablation damage.

This invention discloses a downhole porous medium combustion heater, comprising an inlet chamber shell, a combustion chamber shell, and an exhaust chamber shell. The inlet chamber shell, combustion chamber shell, and exhaust chamber shell each form an inlet chamber cavity, a combustion chamber cavity, and an exhaust chamber cavity, respectively. An air inlet is located at the top of the inlet chamber cavity, and a stainless steel wire mesh is installed at the top of the inlet chamber cavity. A first porous alumina straight-hole mesh gasket is installed at the bottom of the inlet chamber cavity. Porous alumina particles are filled between the stainless steel wire mesh and the first porous alumina straight-hole mesh gasket within the inlet chamber cavity. This invention overcomes the problems of low heating efficiency, short service life, and high energy consumption of traditional electrically heated downhole heaters, while also solving the technical bottlenecks of difficult control and low recovery rate of conventional combustion heaters. The device utilizes convective heat transfer to transfer heat to the reservoir, significantly improving the heat transfer rate and energy utilization efficiency.

This invention provides a baffle plate, a cooling channel, and turbine blades with a cooling structure, including a baffle plate body with multiple recesses or slits. The recesses and slits all originate from the lower edge of the baffle plate body and extend towards the upper edge. The elongated recesses and slits on the baffle plate of this invention can discharge the low-speed eddies generated near the bottom of the baffle plate by the turbulence ribs on the end wall, and interact with the channel flow to generate a strong near-wall secondary flow. This not only improves the convective heat transfer performance on the end wall but also enhances the heat transfer capacity of the baffle plate wall, thus improving the overall heat exchange capacity of the cooling channel.

The application discloses a high-temperature environment magnetic suspension motor heat protection method, obtains the armature winding loss, excitation winding loss and core loss of the magnetic suspension motor under the rated working condition; based on the component loss and the corresponding volume, calculates the heat generation rate of each component, and establishes a temperature field mathematical model containing the heat conduction coefficient and the convective heat transfer coefficient; according to the temperature field mathematical model, the node temperature set of the whole magnetic suspension motor is determined, and the node temperature set is divided into temperature intervals; when the highest temperature is higher than the preset safety threshold, the arrangement parameters of the cooling channel are adjusted, and the simulation and adjustment are repeatedly executed until the highest temperature is below the preset safety threshold, and the heat protection is completed. The application verifies the highest temperature through the temperature field simulation, if the highest temperature exceeds the preset safety threshold, the arrangement parameters of the cooling channel are dynamically adjusted and iteratively optimized until the temperature control requirement is met, so that the key components of the motor are effectively prevented from over-temperature under the high-temperature environment.

The present application relates to the technical fields of high temperature gas cooled reactor, and discloses a kind of high temperature gas cooled reactor prism core thermal hydraulic calculation method, comprising: the core is discretized into calculation unit, and the core physical structure is mapped into calculation component;Build series heat resistance network model, obtain the total heat transfer coefficient between fuel component and graphite matrix component in the same calculation unit, and then obtain real-time heat flux density;Obtain the axial heat transfer rate between the calculation components directly contacted between adjacent axial calculation units;Obtain the radial heat transfer rate between the calculation components directly contacted between adjacent radial calculation units;Obtain the convective heat transfer coefficient and convective heat transfer rate between the surface of graphite matrix component and reflection layer component and the fluid flowing through the coolant channel, obtain the net radiation heat transfer rate;Obtain the temperature of each component, the outlet temperature of the core, the pressure difference between adjacent calculation units along the core and the average reactor pressure drop by the above results.The present application accurately simulates the thermal hydraulic behavior of PMR core.

This invention discloses a real-time temperature field compensation and intelligent control method for the heat treatment process of rolls, belonging to the field of automatic control technology. The method includes: constructing a thermal coupling relationship matrix between different sections based on Fourier's law of thermal conductivity; constructing a boundary heat transfer dynamic compensation model based on Newton's law of cooling, calculating the convective heat transfer coefficient in real time and dynamically correcting the heating power; establishing a dynamic estimation model of the roll core temperature based on the lumped parameter method, solving the core temperature in real time and compensating for thermal inertia lag in advance; and solving the above models collaboratively, using the weighted sum of squares of surface temperature deviation and core temperature deviation as the objective function, to solve for the optimal heating power of each section under thermal coupling constraints. This invention, through the combined application of classical thermophysics theories, solves the technical problems of thermal inertia lag, large axial temperature difference, and difficulty in controlling the core-surface temperature difference during the heat treatment process of rolls, achieving precise layered and zoned control of the temperature field, and significantly improving the quality of heat treatment.

This invention relates to the field of heat flux technology and provides a novel wall heat flux partitioning model based on bubble merging behavior and the evaporation region. Spatially, the model divides the wall into a non-bubble-affected region, a nucleation point region, a bubble sliding region, and an evaporation region. Temporally, it divides the bubble nucleation cycle into bubble waiting time and bubble generation time, and the bubble sliding cycle into transient heat transfer-dominated time and one-way convective heat transfer-dominated time. Based on this spatiotemporal partitioning, the total wall heat flux is composed of quenching heat transfer caused by bubbles leaving the nucleation point, transient heat transfer caused by sliding bubbles, evaporation heat transfer during bubble growth, one-way convective heat transfer in the non-bubble-affected region, and steam heat transfer in the evaporation region. The total wall heat flux is expressed as: [Formula omitted for brevity]. This model can accurately predict the wall heat flux during the nucleation boiling stage and successfully predict the occurrence of the critical heat flux density.

The present application relates to a kind of asphalt pavement paving temperature self-adaptive control method, specifically relates to the technical field of asphalt pavement construction equipment, by real-time identification heat diffusivity, convective heat transfer coefficient and the equivalent temperature of lower base, so that system matrix, control matrix and disturbance matrix are dynamically updated with material thermal state, and then the time constant of exponential decay expected temperature trajectory is adaptively adjusted, to avoid heating mismatch caused by material batch fluctuation or environmental change;Combined with model predictive control rolling optimization, under the upper and lower limit of heating power density, the increment change rate and the upper limit protection constraint of surface layer temperature, actively look ahead to adjust heating power density, effectively suppress the temperature difference mutation between new and old asphalt layer, improve interlayer bonding strength and compaction uniformity, while reducing the asphalt aging and energy waste caused by over-heating, realize the collaborative optimization of paving quality and energy efficiency.

This invention discloses a heat equalization device for the bottom of a pot, belonging to the field of cookware technology. The device includes a contoured cover adapted to the outer contour of the pot's bottom, with numerous through-holes. The cover is fixed to the outer side of the pot's bottom, forming a semi-open heat equalization cavity between it and the pot bottom. This device can effectively block open flames even when the aperture is larger than the static critical flame quenching diameter. Through the synergistic effect of the cavity's back pressure and the flame quenching via the through-holes, combined with radiative heat transfer, flameless combustion heat release, and convective heat transfer, it achieves uniform heating of the pot bottom. This device effectively solves the problem of localized overheating at the pot bottom, reduces food sticking and scorching, and features low thermal inertia and rapid heat response, making it suitable for Chinese stir-frying and deep-frying scenarios.

This invention discloses a method for inverting and calculating the thermal parameters of tunnel lining and surrounding rock based on temperature field testing, comprising the following steps: S1, deploying temperature sensors radially along the tunnel cross-section to monitor the air, lining, and surrounding rock temperatures over a long period; S2, fitting the temperature changes at each measuring point using trigonometric functions to obtain the annual average temperature and annual temperature amplitude; S3, fitting an exponential characteristic function based on the radial decay law of the annual temperature amplitude; S4, calculating the thermal conductivity of the lining and surrounding rock based on the characteristic function; S5, fitting a logarithmic characteristic function based on the radial distribution of the annual average temperature; S6, calculating the convective heat transfer resistance and cross-sectional heat flux density; S7, combining the heat flux density and temperature distribution characteristic function to invert and obtain the thermal conductivity of the lining and surrounding rock. This method is based on the steady-state and periodic heat transfer principle and has advantages such as low cost and no damage to the tunnel structure, providing thermophysical parameters for temperature field analysis and anti-freezing design of tunnels in cold regions.

This invention discloses a scaled-down model simulation system and method for oil-immersed transformers based on similarity theory, comprising: S1 determining the transformer model and structural parameters required for multiphysics analysis, as well as the similarity ratio of the scaled-down model for simulating physical phenomena; S2 determining the eddy current field control equations adapted to the transformer's electromagnetic field using Maxwell's equations, and deriving the eddy current field similarity criterion based on similarity theory; S3 determining the energy conservation similarity criterion based on the energy conservation equation; S4 determining the momentum conservation similarity criterion based on the momentum conservation equation; S5 determining the convective heat transfer similarity criterion based on convective heat transfer boundary conditions; S6 determining the heat flow compensation principle by integrating various similarity criteria, performing temperature-fluid field simulation, and comparing the simulation results with those of the original structural model and prototype experimental results. This invention is computationally simple, highly accurate, and efficient, and can be well applied to engineering practice.

The present application relates to the technical field of waste heat collection, and particularly relates to a diesel generating set waste heat collection device and a method thereof. The technical problem to be solved is to provide a diesel generating set waste heat collection device which can efficiently recover waste heat and has good gas-solid separation and self-cleaning capacity. The technical scheme of the present application is as follows: comprising a flue gas pipe and the like; a bend is arranged on the flue gas pipe; one end of the bend is connected with a waste heat box through a flange; a pipeline is installed in the waste heat box; the pipeline is sealedly connected at both ends and penetrates through the waste heat box; the lower end of the pipeline is a water inlet, and the upper end is a water outlet; and helical fins are installed on the outer wall of the pipeline. In the present application, the helical fins are used to guide the formation of helical air flow on the flue gas side, and the clockwise and counterclockwise alternating helical water channels are used to generate vortex flow on the water side, so that the two work together to greatly improve the convective heat transfer coefficient and heat exchange area, and significantly improve the waste heat recovery efficiency.

A box-type electric heating furnace with internal circulation convection and radiation heat transfer comprises, from the outside to the inside, a box-type furnace steel structure, a box-type furnace wall panel, and a heat-insulating lining. The box-type furnace steel structure supports the entire shell and is welded to the box-type furnace wall panel, with a heat-insulating lining on the inner side of the wall panel. Furnace tubes are horizontally arranged inside the box-type furnace cavity, and the medium flows from top to bottom along each row of furnace tubes. Every three rows of furnace tubes from top to bottom, a certain space is left for inserting electric heating tubes, which are arranged at 90° to the furnace tubes. Multiple rows of furnace tubes are arranged horizontally, with a spacing of 1.5 times or more the tube center distance between each row. The overall furnace structure of this invention adopts a box-type structure, with the interior filled with horizontally and vertically arranged furnace tubes and electric heating tubes, maximizing the use of the furnace space. The internal circulation of gas within the furnace allows the medium inside the furnace tubes to receive not only radiative heat transfer but also convective heat transfer, greatly increasing the surface heat intensity of the furnace tubes.

This invention provides a shell-and-tube heat exchanger with an elastic baffle plate. The baffle plate is an elastic tube bundle structure, comprising multiple arc-shaped tubes. The centerlines of the multiple arc-shaped tubes are concentric circular arcs. Adjacent arc-shaped tubes are connected at one end and disconnected at the other, thus creating a free end at the connected end of the tube bundle. The outermost arc-shaped tube has an outer open end, and the innermost arc-shaped tube has an inner open end. The elastic tube bundle forms a series structure from the outer open end to the inner open end. By configuring the baffle plate as an elastic tube bundle structure, this invention increases the contact area between the two fluids, increases fluid turbulence, and improves the convective heat transfer coefficient of the shell side of the heat exchanger, thereby effectively improving the heat transfer efficiency.

This utility model discloses a uniform heat treatment device for metal castings, belonging to the field of metal material heat treatment technology. Its key technical features include a quenching tank with a conveyor rail at its top and a transfer platform movably connected to its bottom. A dynamic immersion mechanism is movably connected to the bottom of the transfer platform, and a dynamic turbulence mechanism is movably connected to the inner side of the quenching tank. Continuous operation can be achieved by using the conveyor rail and transfer platform, replacing manual or fixed robotic arm single-batch operations, simplifying the process, improving efficiency, and avoiding long-term occupation of the quenching tank. Simultaneously, the dynamic up-and-down floating quenching mode breaks the vapor film barrier, enhancing the convective heat transfer between the quenching liquid and the casting. Combined with the casting flipping caused by the shaking of the support plate and metal basket, it solves the problems of weak convection, uneven temperature field, and insufficient cooling uniformity caused by thermal stress imbalance in traditional static immersion, thus improving heat exchange efficiency and thermal stress uniformity.

The application discloses a kind of production waste heat utilization's blast type zero gas consumption adsorption dryer, including adsorption tower, regeneration tower, adsorption pipeline, regeneration pipeline equipped with tube heat exchanger, pressure equalization pipeline.Adsorption tower and regeneration tower adopt parallel connection mode, air inlet and outlet are connected with adsorption tower and regeneration tower by adsorption pipeline respectively, regeneration pipeline is connected with upper and lower end of adsorption tower and regeneration tower, regeneration pipeline is equipped with air blower and parallel heater, cooler, air pipeline is connected with cold fluid pipeline of tube heat exchanger in series before heater front end, and hot fluid pipeline of tube heat exchanger is connected with waste heat pipeline generated by other production equipment.The air of the application suction dryer is first passed through waste heat generated by other production equipment to improve temperature by convection heat exchange in regeneration process, and then further heated by heater to reach regeneration temperature, so that waste heat resource in production process is utilized, and energy consumption of suction dryer itself is reduced.The application has simple equipment structure, good adsorption effect, fast regeneration speed, high production efficiency, does not consume finished product gas, can effectively reduce process energy consumption while ensuring drying air quality, and meets the requirement of national green development planning for energy saving and emission reduction.

This invention relates to the field of smart grid technology and discloses an electronic cabinet power prediction method and system for improving the stability of ship power grids. The method includes: synchronously acquiring inertial measurement data; extracting the actual microscopic disturbance acceleration and effective orthogonal interference acceleration based on the ship's motion state; deriving and predicting contact resistance and convective heat transfer coefficient based on this data; performing time integration on the heat change rate to obtain online extracted heat capacity and deriving and predicting semiconductor junction temperature; substituting quantum transition laws to predict parasitic leakage power; combining internal load power consumption and transient bus voltage to synthesize and predict the total destructive demand power; and finally using the rotor inertia state of the power grid for feedforward reduction to generate stabilization and remodeling execution commands. This invention mitigates hidden parasitic surges caused by wave turbulence, prevents the unauthorized draining of rotor kinetic energy, and improves the reliability of power grids on isolated island ships.

The application relates to the technical field of substation monitoring, in particular to an intelligent monitoring method and system for a box-type substation, which comprises the following steps: dividing a three-dimensional physical space of the box-type substation into a digital twin grid, and assigning observable labels and blind area labels; acquiring surface parameters and load currents in the three-dimensional physical space, and mapping the load currents into three-dimensional internal heat sources; calculating the rising gradient of the surface temperature and the load current, performing transient iterative solving on the digital twin grid to obtain a twin result; extracting the approximation degree of the corresponding grid nodes from the twin result according to the blind area labels; extracting the simulation temperature of the corresponding grid nodes from the twin result according to the observable labels, and correcting the convective heat transfer coefficient of the digital twin grid based on the residual error according to the effective state of the anti-condensation control instruction. The application can solve the problem that the blind area surface temperature model lags behind the physical temperature rise, and realize early intervention before the condensation phase change.

This invention relates to the field of X-ray tube technology, and in particular to an optimized design method for the insulation packaging and heat dissipation structure of X-ray tubes. The method includes constructing a parametric geometric model of a three-layer composite structure and assigning corresponding physical properties to each layer; establishing an electro-thermal multiphysics coupling simulation model based on the geometric model, and applying high-pressure boundary conditions and convective heat transfer boundary conditions to obtain the electric field distribution and temperature field distribution within the three-layer composite structure; determining design variables and constructing a multi-objective optimization function based on the electric field distribution and temperature field distribution; and using an optimization algorithm to optimize the design variables to obtain the optimal combination of structural dimensions. This invention effectively solves the problem of local overheating or insufficient insulation margin caused by neglecting the interlayer electro-thermal coupling effect in traditional designs, while ensuring computational efficiency and the stability of the optimization results, ultimately obtaining the structural dimension combination with optimal overall performance.

This application provides a packaging assembly, a power device, and an electronic device, relating to the field of semiconductor technology. The packaging assembly is used to carry a semiconductor device and includes a first packaging substrate and a second packaging substrate. The second packaging substrate is disposed on one side of the first packaging substrate in a first direction and connected to the first packaging substrate. A heat exchange channel is formed between the first and second packaging substrates, allowing a heat exchange medium to circulate, thereby enabling the heat exchange medium to dissipate heat generated by the semiconductor device more quickly and efficiently. At least one of the first and second packaging substrates, facing the heat exchange channel, is provided with multiple flow-dissipating portions, which are spaced apart along a second direction. The flow-dissipating portions improve the convective heat transfer efficiency between the heat exchange medium and the heat exchange channel, thereby improving the heat dissipation effect of the packaging assembly on the semiconductor device.

This invention provides a modular design structure and reinforcement method for a multi-fluid aerospace precooler, specifically belonging to the field of aircraft propulsion system technology. Through the series arrangement of three structural layers and the progressively increasing inner diameter of components, the flow field is systematically optimized. The fluid undergoes multiple distributions and adjustments as it passes through various levels of branch pipes and helical tubes, ultimately achieving highly uniform flow and avoiding localized overheating. A catalyst is coated on the inner wall of the first-stage branch / manifold pipe, utilizing its large diameter and low flow velocity to form a functional separation structure where "the first-stage pipe is primarily for endothermic reaction, and the second-stage pipe and helical tube are primarily for convective heat transfer," thus improving overall thermal efficiency. This invention includes a precooler, which employs a three-layer structure arranged in a stacked configuration along the fluid flow direction. Each structural layer is selected based on heat transfer capacity and flow resistance requirements. Each structural layer contains a first-stage branch / manifold pipe, a second-stage branch / manifold pipe, and a helical tube arranged in series along the flow path, with the inner diameter of corresponding components in different structural layers increasing progressively along the fluid flow direction.

This invention belongs to the field of power device thermal simulation technology and discloses a power device thermal simulation method based on flow field dimensionality reduction. This invention achieves high reconstruction accuracy and dimensionality restoration, enabling precise characterization of flow field characteristics under complex heat dissipation topologies of power modules. For the geometric consistency of heat sinks (such as PinFin) in the Z-axis direction, the mainstream velocity characteristics are obtained by analyzing the 2D Navier-Stokes equations, effectively capturing the core contribution of convective heat transfer. This method solves the shortcomings of extremely high computational cost and slow convergence in full-order 3D simulation, ensuring engineering accuracy in macroscopic thermal-fluid coupling scenarios while significantly reducing dimensionality. The data mapping efficiency is extremely high, achieving second-level search response and reconstruction for large-scale mesh nodes with millions of nodes. Traditional data reconstruction uses a point-by-point traversal method, which has high computational complexity and low processing efficiency when dealing with high-density meshes.

The purpose of this invention is to provide a high-efficiency cooling structure for turbine blade crowns with a rotary cooling channel, belonging to the field of gas turbines. It includes blades, rim plates, tenons, and a crown. The crown is located above the blades, which are fixed to the tenons by the rim plates. A rotary cooling channel is installed inside the crown. The upper and lower surfaces of the crown have film cooling holes, and the pressure side of the blade has film cooling holes on its surface. Part of the cold air entering the blade flows out through the film cooling holes on the blade surfaces, while the other part enters the rotary cooling channel through the film cooling holes on the lower surface of the crown and flows out through the film cooling holes on the upper surface of the crown. This invention, by introducing a rotary cooling channel structure into the turbine blade crown, enhances internal convective heat transfer and simultaneously achieves leakage control. The circular film cooling holes form a surface isolation film, and this dual cooling mechanism significantly improves cooling performance, overcoming the limitations of traditional crowned blades that rely on simple geometric barriers.

The utility model discloses a kind of waste heat utilization mechanisms of salt-containing waste liquid incineration waste heat boiler, specifically related to waste heat utilization technical field, including heat preservation furnace wall, the waste heat utilization component is arranged in the inside of heat preservation furnace wall;The waste heat utilization component includes front wall membrane type water-cooled wall, the front wall membrane type water-cooled wall is set in heat preservation furnace wall inner wall top, the heat preservation furnace wall inside is provided with middle membrane type wall.The utility model is combined by various heat exchange equipment and the flue design of reasonable, realized multistage recovery to flue gas waste heat, improve heat recovery efficiency, flue gas and full empty membrane type water-cooled wall reverse heat exchange in first flue, increased heat transfer temperature difference, improved heat exchange efficiency, flue gas transverse washes evaporator, superheater etc in second flue, enhanced convective heat transfer effect, so that flue gas heat can be more fully transferred to heating surface, improve the overall heat transfer capacity, further improve heat recovery effect.

This invention belongs to the field of fuel cell bipolar plate design, specifically relating to a waveform integrated cooling structure for a fuel cell bipolar plate and a fuel cell. The waveform integrated cooling structure includes gas and coolant flow channels, with ribs between the gas flow channels and several flow-guiding blocks inside. The blocks in adjacent flow channels are arranged alternately, and cavities are formed within the blocks. Several fluid channels are opened within the ribs and communicate with the cavities to form waveform coolant flow channels. The coolant and gas flow channels are integrated along the transverse and longitudinal directions of the bipolar plate. Based on this waveform integrated cooling structure, the thermal resistance from the membrane electrode to the coolant and the volume of the cooling unit are effectively reduced. The cooling flow field layout can be flexibly adjusted to improve its adaptability to different operating conditions. By enhancing convective heat transfer at the flow channel bends, the coolant heat removal capacity is improved and temperature uniformity is maintained. Therefore, under different coolant flow rates, the output performance of the fuel cell is effectively improved by reducing ohmic and concentration losses.