63results about "Heat exchange simulation" patented technology

The present invention relates to a computer-implemented method and system for optimizing geometric configurations within thermal energy transfer device comprising at least one thermal energy exchange channel to enhance performance. The method involves obtaining target design criteria for a physical object and defining a unit cell dimensioned such that the thermal energy transfer channel is formed by a matrix of N1 x N2 identical unit cells. Shape optimization is performed at the unit cell level by iteratively modifying the boundary surfaces of solid structures within a unit cell based on criteria including performance. Optimized design parameters are outputted and transferred to production equipment for creating an optimized thermal energy transfer device. This device comprises a matrix of structures arrayed in at least one dimension, derived from optimized unit cell models.

The present invention relates to a computer-implemented method and system for optimizing geometric configurations within thermal energy transfer device comprising at least one thermal energy exchange channel to enhance performance. The method involves obtaining target design criteria for a physical object and defining a unit cell dimensioned such that the thermal energy transfer channel is formed by a matrix of N1 × N2 identical unit cells. Shape optimization is performed at the unit cell level by iteratively modifying the boundary surfaces of solid structures within a unit cell based on criteria including performance. Optimized design parameters are outputted and transferred to production equipment for creating an optimized thermal energy transfer device. This device comprises a matrix of structures arrayed in at least one dimension, derived from optimized unit cell models.

The invention discloses a calcium-based thermochemical particle bed health status assessment method and a related device. The method comprises the following steps: acquiring a surface image of a calcium-based thermochemical particle bed; performing data enhancement on the surface image of the calcium-based thermochemical particle bed layer; inputting the surface image after data enhancement into a multi-task segmentation model to obtain a pixel-level segmentation mask; calculating the expansion rate, the agglomeration index, the crushing degree, the collapse depth and the collapse area ratio of the particle bed layer according to the pixel-level segmentation mask; the performance of the calcium-based thermochemical particle bed layer is evaluated according to the expansion rate, the agglomeration index, the crushing degree, the collapse depth and the collapse area ratio of the calcium-based thermochemical particle bed layer. The method and the related device can accurately detect the health of the calcium-based thermochemical particle bed layer.

A testing apparatus and an associated method for assessing the performance and integrity of a ground source heat exchanger installation are provided. The testing apparatus is configured to form a fluid tight, pressure resistant connection with the pipework of a ground source heat exchanger so as to create a test system. Fluid can then be pumped through the test system as the flow rate and / or fluid pressure are measured. By collecting this data about the fluid before and after it passes through the pipework the testing apparatus enables an operator to identify differences in the upstream and downstream values that may be indicative of a fault in the pipework. Preferably, fluid is circulated through the pipework in a first flow direction and then a second flow direction and measurements collected for both are compared to provide further detail of possible faults in the pipework.

To provide a method for conforming quality of a heat exchanger that does not require the use of a large amount of hot air.SOLUTION: A method for confirming quality of a heat exchanger comprises: a step ST11 of performing a hydraulic pressure test in which liquid is sealed in a pressurized state into a first flow path and a second flow path of the heat exchanger having the first flow path and the second flow path adjacent to the first flow path; a step ST12 of discharging liquid from the first flow path and the second flow path; and a step ST13 of reducing pressure in the first flow path and the second flow path with a vacuum pump to promote evaporation of the liquid remaining in the first flow path and the second flow path. In the step ST13 of promoting the evaporation of the liquid, heated gas is fed into the first flow path and the second flow path.SELECTED DRAWING: Figure 3

The invention belongs to the field of thermal power generating unit cold end optimization, particularly relates to an air cooling island finned tube temperature field prediction method based on a physical information neural network, and aims to realize accurate, efficient and robust prediction of an air cooling island finned tube temperature field. The method comprises the steps that operation data are collected and preprocessed based on a direct air cooling unit condenser sensor, and a data set is obtained; according to a heat conduction and fluid flow control equation, a loss function is constructed in combination with initial and boundary conditions, and a physical information neural network containing a forward flow region and reverse flow region full-connection neural network and embedded with physical prior constraints is established; then training the network by using a data set, calculating the required heat exchange area and the actual heat exchange area of the downstream region through a heat balance equation during training, and selecting to start the downstream region network or combine the two-region network according to the sizes of the required heat exchange area and the actual heat exchange area; and finally, deducing the temperature distribution of a single-row air cooling unit by using the trained network, finely adjusting model parameters if the prediction deviation exceeds a threshold value, and expanding to a multi-row structure to obtain the temperature field distribution of the whole finned tube of the air cooling island.

This heat exchanger analysis device includes a chronological change acquisition unit, a temperature fluctuation region identification unit, a fluctuation frequency calculation unit, and a fatigue determination unit. The chronological change acquisition unit acquires the chronological change of a metal temperature measured at a measurement point provided to a heat exchanger. The temperature fluctuation region identification unit identifies, from the chronological change, a plurality of temperature fluctuation regions that have a temperature fluctuation range. The fluctuation frequency calculation unit calculates a fluctuation frequency of the metal temperature in a predetermined period on the basis of the plurality of temperature fluctuation regions. The fatigue determination unit determines, on the basis of the fluctuation frequency, whether a heat exchanging part at the measurement point is fatigued.

The vapor chamber (1) has a flat-plate-shaped housing (50) in which an internal space (20) is formed, and the housing (50) has formed therein: a heat-receiving section (3) that receives heat from a heat source body (2), a vapor flow path (5) through which a refrigerant (CO) vaporized in the heat-receiving section (3) moves, and a capillary flow path (4) through which the refrigerant (CO) liquefied by heat dissipation is conveyed to the heat-receiving section (3) by means of a capillary force. A plurality of spacers (42) for reinforcing the housing (50) are arranged in the internal space (20) along the surface direction of the housing (50). When [delta] c [mm] is the allowable amount of bending deformation of the housing (50), E [N / mm2] is the longitudinal elastic coefficient of the housing (50), I [mm2] is the moment of inertia of the cross section of the housing (50), and w [N / mm] is the uniform load applied to the housing (50) per unit length due to the internal pressure or external pressure generated in the internal space (20), [delta] c [mm] is the allowable amount of bending deformation of the housing (50), E [N / mm2] is the longitudinal elastic coefficient of the housing (50), I [mm2] is the moment of inertia of the cross section of the housing (50), and w [N / mm] is the uniform load. The distance (Lsp [mm]) between the spacers (42) and the joining protrusions (17) that are adjacent to each other is defined so as to satisfy the following formula.

A method can comprise dividing a heat exchanger design into a plurality of modules (10), the plurality of modules (10) arranged in a grid, each module in the plurality of modules (10) including: a first fluid conduit (161) defining an inlet (1611), an outlet (1612), and a heat-transfer surface (602), and a first flow direction, and a second fluid conduit (162) defining a second inlet, a second outlet, a second heat-transfer surface, and a second flow direction, the second flow direction different from the first flow direction; and determining a heat-transfer augmenter arrangement (1161) for the first fluid conduit (161) and the second fluid conduit (162) of each module in the plurality of modules (10) based on a stress threshold of the module (16) in the plurality of modules (10).

The invention relates to a device (100) for detecting ice formation on an evaporator (10) of a heat pump (200). The evaporator (10) is designed as a heat exchanger with a pipe (12) and a plurality of fins (14) which, during normal operation, are subjected to an airflow (18) that is guided through gaps between the fins (14). At least one vibration sensor (16) is arranged on a fin (14) and determines a natural frequency (30) of the fin (14). Furthermore, the invention relates to a method for detecting ice formation on an evaporator (10) of a heat pump (200) and to the use of such a device (100) for detecting ice formation on an evaporator (10) of a heat pump (200).

A plate heat exchanger is disclosed in which several heat exchanger plates are held together in a pressure frame between a frame head equipped with media connections and a cover by means of a clamping device to form a plate stack. A flow chamber is formed between each adjacent plate by a circumferential seal. The flow chambers are alternately connected to two different pairs of media connections, so that adjacent flow chambers can be supplied with different heat exchange media. To enable monitoring of the seal condition, at least one pressure sensor is arranged on the frame head along a contour line of the circumferential seals, which measures the surface pressure acting on the circumferential seals in the plate stack.

The invention discloses transformer waste heat recovery equipment for a transformer substation, and belongs to the field of transformer waste heat utilization, the transformer waste heat recovery equipment comprises a transformer main body, and the outer side of the transformer main body is provided with a stable waste heat recovery mechanism for recovering heat of the transformer main body; the waste heat stable recovery mechanism comprises a circulating winding pipe connected to the outer side of the transformer body in a winding mode and a heat preservation shell fixedly connected to the outer portion of the transformer body, the two ends of the circulating winding pipe penetrate through the heat preservation shell and jointly communicate with a circulating liquid pipe, and the middle position of the circulating liquid pipe is connected with a medium-temperature phase change heat storage mechanism in a penetrating mode. The heat preservation shell enables the waste heat stable recovery mechanism to be kept stable to the maximum extent during heat recovery, secondly, the medium-temperature phase change heat storage mechanism and the low-temperature phase change heat storage mechanism are arranged, the waste heat recovery efficiency can be achieved to the maximum extent, the heat dissipation efficiency of the transformer body can be guaranteed, and the service life of the transformer body is prolonged. And the condition that the normal work of the transformer main body is influenced by over-high temperature is avoided.

A fluid control device includes a housing having a plurality of surfaces that define a cavity within the housing. The housing includes an inlet to receive a fluid mixture and an outlet to direct the fluid mixture out of the housing. The fluid mixture includes a fluid combined with debris. An array of structures is disposed within the cavity and includes a plurality of structures. Each of the plurality of structures includes a first surface coupled with an inner surface of the housing and a second surface disposed a distance away from the inner surface of the housing. The array of structures includes a first portion and a second portion. The first portion is configured to interfere with the fluid mixture to separate at least some of the debris from the fluid, and the second portion is configured to direct the fluid and at least some of the debris toward the outlet.

Provided are a thermal management system modeling method and apparatus, and a device, a readable storage medium, a vehicle, a computer program product and a computer program. The method comprises: acquiring a plurality of temperature nodes in a thermal management system and a plurality of branch loops in the thermal management system; on the basis of a heat exchange component in each branch loop and / or warm water points of cooling liquids in at least two branch loops, determining temperature nodes which cannot be combined; and on the basis of the temperature nodes which cannot be combined, combining the temperature nodes in the thermal management system according to a preset combination strategy, so as to obtain a target model corresponding to the thermal management system.

Systems and methods are provided for evaluating performance of a heat exchanger, such as a condenser, using rules-based logic. A plurality of sensors can measure various operating properties of the heat exchanger and transmit corresponding measurement information to a controller. The controller can (i) evaluate the measurement information for a plurality of rules in which each rule considers an operating parameter of the heat exchanger that is based on the measurement information to provide a set of operating values; (ii) compare the set of operating values to a rules matrix in which each of a plurality of possible diagnoses for the heat exchanger are associated with a corresponding set of predetermined values from a set of the plurality of rules; and (iii) based on the comparison, determine at least one likely diagnosis for the heat exchanger from among the plurality of possible diagnoses.

Method for operating a heat exchanger in the intake manifold of an internal combustion engine, - wherein the heat exchanger is subjected to a flow of medium during temperature control, which contains components that are deposited on and subsequently removed from a surface of the heat exchanger, resulting in a variable thickness (d S ) a layer of deposited components of the medium to be tempered on a surface of the heat exchanger and consequently the thermal resistance (M) of the heat exchanger changes during operation, so that control and / or regulation of the temperature of the medium to be tempered is affected, - where the medium to be tempered is a mixture of fresh air and exhaust gas, - where the control and / or regulation of the temperature of the medium to be tempered is model-based, - taking into account the change in thermal resistance (M) in model-based temperature control and / or temperature regulation, - where it is assumed that the thermal resistance (M) is composed of a constant component (M0) and a time-dependent component (M1(t)), where the time-dependent component (M1(t)) is further dependent on the variable thickness (d) S ) is dependent and the change in thickness (d S ) is attributed to the mass or quantity flow rate of the medium to be tempered, which flows through the heat exchanger, - wherein the deposition and removal of components of the medium to be tempered on a surface of the heat exchanger is described by a differential equation concerning the variable thickness (d S ) is described, - where a determination of parameters k appearing in the differential equation d , k R, which take into account the application to the surface of the heat exchanger and the removal from the surface of the heat exchanger during the operation of the heat exchanger.

This invention provides a gasket-type electromagnetic flow sensor and a heat exchanger. The gasket-type electromagnetic flow sensor includes a gasket body and multiple sensing units. The gasket body includes an insulating region with multiple tube holes, which are connected to multiple heat exchange tubes of a tube bundle. Multiple sensing units are respectively disposed within the gasket body and distributed within the insulating region, each corresponding to one of the tube holes. Each sensing unit includes a magnetic field generator and an electrode assembly. The magnetic field generator generates a magnetic field within the tube holes to polarize the liquid medium passing through them. The electrode assembly outputs an induced electromotive force signal based on the polarized liquid medium. This invention can monitor the flow state of the medium within each heat exchange tube of a tube bundle online, quickly locating leaking heat exchange tubes. This not only facilitates accurate monitoring and description of the flow and heat exchange state of the heat exchanger but also provides guidance for operations such as tube plugging when tube-side leaks occur.

A system (80) and method (200) for controlling corrosion in a heat exchanger (60) having a hot gas inlet (74) and outlet (76) and a cold-side inlet (68) and outlet (70) includes determining (210) a temperature at a selected first location on the heat exchanger, controlling (220) a temperature of a corrosion detection device (82) to a selected first temperature based on the temperature of the heat exchanger surface, and determining (230) a corrosion rate at the selected first location associated with the heat exchanger surface for the selected first temperature. The method (200) further includes comparing (240) the corrosion rate to a predicted corrosion rate, determining (250) a target temperature for a cold-side fluid inlet of the heat exchanger (60) based at least in part on the determined corrosion and the comparison, and controlling (260) the temperature of the cold-side fluid inlet based at least in part on the determined target inlet temperature, the determined corrosion rate, and the predicted corrosion rate.

A first temperature value indicating a temperature near a heat source, a second temperature value indicating a temperature near an outer end of a cooling rib extending from the heat source, and a third temperature value indicating an ambient temperature in the location of the heat source are used to determine fouling status.

In one aspect, a heat exchanger system is provided that includes a cooling system and a sensor configured to detect a variable of the cooling system. The heat exchanger system includes processor circuitry configured to provide the variable and a plurality of potential operating parameters of the cooling system to a machine learning model representative of the cooling system to estimate at least one of energy consumption, water usage, and chemical usage for the potential operating parameters. The processor circuitry is further configured to determine, based at least in part on the estimated at least one of energy consumption, water usage, and chemical consumption, for the potential operating parameters, an optimal operating parameter of the cooling system to satisfy a target optimization criterion.

The invention discloses a condenser scaling prediction method, product, medium and system, and the method comprises the following steps: S1, obtaining the operation parameters of a condenser, including the circulating water inlet temperature, the circulating water outlet temperature, the steam turbine exhaust steam temperature, the cooling water mass flow and the condenser heat exchange area; s2, calculating a total heat transfer coefficient of the condenser based on the condenser operation parameters, and further obtaining a scaling coefficient; wherein the scaling coefficient is used for representing the cleanliness of the cooling water pipe, and the value of the scaling coefficient is increased along with the increase of the scaling degree; and S3, outputting the scaling coefficient as time sequence data to a pre-constructed gray prediction model for processing, outputting a scaling coefficient prediction value of a future time period, and judging the scaling trend of the condenser according to the scaling coefficient prediction value. According to the method, the condenser variable working condition physical model and the grey prediction algorithm are fused, and dynamic and quantitative evaluation and trend prediction can be carried out on the condenser scaling state only through a small amount of operation data.

A method and system for optimizing the geometric configuration of a thermal energy transfer device featuring vertically stacked thermal energy channels separated by a wall structure. The device is conceptualized as composed of N1 x N2 x N3 identical unit cells, each encompassing parts of the channels. Optimization is conducted at the unit cell level, focusing on the geometry of solid structures within the channels to enhance thermal energy transfer between the involved fluid streams / flows within each of the at least two channels. This is achieved through shape optimization using a processing unit, which iteratively adjusts the boundaries of these structures based on predefined criteria until a specific performance threshold is met or a maximum number of iterations is reached. The outcome is optimized design parameters that define the geometry of the solid structures in each unit cell. These parameters are then utilized to guide the manufacturing of the optimized thermal energy transfer device.

A method can comprise dividing a heat exchanger design into a plurality of modules (10), the plurality of modules (10) arranged in a grid, each module in the plurality of modules (10) including: a first fluid conduit (161) defining an inlet (1611), an outlet (1612), and a heat-transfer surface (602), and a first flow direction, and a second fluid conduit (162) defining a second inlet, a second outlet, a second heat-transfer surface, and a second flow direction, the second flow direction different from the first flow direction; and determining a heat-transfer augmenter arrangement (1161) for the first fluid conduit (161) and the second fluid conduit (162) of each module in the plurality of modules (10) based on a stress threshold of the module (16) in the plurality of modules (10).

A method can comprise dividing a heat exchanger design into a plurality of modules (10), the plurality of modules (10) arranged in a grid, each module in the plurality of modules (10) including: a first fluid conduit (161) defining an inlet (1611), an outlet (1612), and a heat-transfer surface (602), and a first flow direction, and a second fluid conduit (162) defining a second inlet, a second outlet, a second heat-transfer surface, and a second flow direction, the second flow direction different from the first flow direction; and determining a heat-transfer augmenter arrangement (1161) for the first fluid conduit (161) and the second fluid conduit (162) of each module in the plurality of modules (10) based on a stress threshold of the module (16) in the plurality of modules (10).

The invention relates to the field of waste heat utilization, in particular to a process cooling water waste heat recovery equipment performance evaluation method which comprises the following steps: S1, constructing an equipment stability model based on equipment stability influence parameters, and outputting a corresponding equipment stability coefficient; s2, constructing an operation state model based on the total electric power of the equipment and the energy efficiency of the equipment, and outputting an operation state coefficient; and S3, constructing a performance evaluation coefficient of the equipment in combination with an equipment stability coefficient and an operation state coefficient based on the equipment use duration and the workshop personnel density under the corresponding working condition parameters in the equipment stability model and the operation state model as influence factors. According to the invention, a more comprehensive and dynamic performance evaluation system is constructed to judge the real performance of the waste heat recovery equipment.

This invention discloses an online fault diagnosis method for graphite heat exchangers, relating to the field of data processing technology. The method includes: performing data acquisition to establish a time-series monitoring dataset; dividing the time-series monitoring dataset into stages, creating a uniform sampling space; constructing a fitting dataset with constraints of minimum sample size and sampling space, and performing interior and exterior point discrimination; iteratively constructing the fitting dataset and obtaining a working fitting curve; establishing a calibration fitting curve, and establishing a basic deviation evaluation value based on the deviation evaluation between the calibration fitting curve and the working fitting curve; performing exterior point discrete analysis to establish additional deviation evaluation values; setting key coefficients for monitoring parameters in fault anomalies, calculating fault values, and performing fault early warning. This method solves the technical problem of difficulty in timely and accurate diagnosis of graphite heat exchanger faults in existing technologies, achieving online fault diagnosis of graphite heat exchangers and improving the accuracy and efficiency of fault diagnosis.

Shell-and-tube devices typically require regular maintenance. Described herein is an automated method for tracking the status of individual tubes during maintenance activities and recording status data for review and analysis. Status data may optionally be reported in real-time summary format and / or used to predict time-to-completion. The method helps to reduce the expense of performing maintenance activities in shell-and-tube devices, including shell-and-tube reactors and heat exchangers.

A testing apparatus is designed to test for leakage out of and between first and second conduits, which may be part of a heat exchange system. The apparatus includes first and second channels, a flow control system and flow sensors located at various positions within each respective channel. Each channel connects to a conduit to form respective closed loop systems and the flow control system is adapted to actively maintain fluid pressure at a set level within each closed loop system. In a set-pressure closed loop system, any detection of flow is indicative of a leak. The use of multiple flow sensors at different positions permits differentiation between possible leak locations. Shut-off valves may provide a mechanism by which the testing apparatus can control a sequence of tests to be carried out on the conduits. The apparatus can be used in-line to test a variety of designs of heat exchanger and may be scaled up to test complex systems.

The invention relates to a cooling device (30), comprising a first and a second section (10, 20), each of which is plate-shaped. At least one channel (12, 22) for a cooling fluid (25) is formed in each of the segments (10, 20), and wherein the first and the second segment (10, 20) are connected via a bending structure (40) so as to be pivotable relative to one another about a bending axis (15). According to the invention, the bending structure (40) is designed to exert a restoring force in the bent state, and the bending structure hydraulically connects the at least one channel (12) in the first section (10) to the channel (22) in the second section (20). Likewise, the invention relates to a converter (50) and a foldable electronic device (60), each of which is embodied with such a cooling device (30). The invention further relates to a simulation program product (70), which is designed to simulate the operating behavior of the corresponding cooling device (30).