137results 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.

A leak test device (44) is designed to test leaks between a first conduit (38) and a second conduit (40), which may be part of a heat exchange system. The apparatus (44) includes a first channel (48) and a second channel (50), a flow control system (46), and flow sensors (F1.1, F1.2, F2.1, F2.2) located at respective locations within each respective channel (48, 50). Each passage (48, 50) is connected to a conduit (38, 40) to form a respective closed-loop system, and a flow control system (46) is adapted to actively maintain fluid pressure at a set level within each closed-loop system. In a set pressure closed loop system, any detected flow is indicative of a leak. The use of a plurality of flow sensors (F1.1, F1.2, F2.1, F2.2) at different locations allows the possible leakage locations to be distinguished. The shut-off valve may provide a mechanism by which the test device can control a test sequence to be performed on the conduit (38, 40). The apparatus may be used online to test various designs of the heat exchanger, and may be amplified to test complex systems.

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.

A method of analyzing convective heat transfer includes calculating a parameter using a centrifugal force of a fluid flowing inside a heat exchanger and analyzing convective heat transfer performed inside the heat exchanger through a relational expression using the parameter.

The disclosure relates generally to methods and systems for determining heat transfer rates between battery pack and coolant channel with varying coolant flow rate in a real-time. A lumped conductance generated between the battery pack and a coolant channel is used to determine the heat transfer rates between the battery pack and the coolant channel. Conventional techniques for calculating the lumped conductance between the battery and the coolant channel either use experimental methods or rely on the heat transfer correlations in simple geometry. The present disclosure calculates the lumped conductance by understanding an internal structure of a cylindrical battery pack using a high-fidelity computational fluid dynamic (CFD) simulation. This will help in determining the heat transfer rates of the battery pack in the real-time at the battery core especially when the coolant channel side hydrodynamic conditions change with time due to the variable coolant flow rates.

Disclosed herein is a computer-implemented method of generating a three-dimensional structure for a thermal management component. The computer-implemented method of generating a three-dimensional structure for a thermal management component comprises selecting, by a processor, at least one three-dimensional element from a plurality of three-dimensional elements. The computer-implemented method of generating a three-dimensional structure for a thermal management component also comprises determining, by the processor, a surface area necessary to dissipate heat from a first fluid according to a desired temperature difference and a desired heat transfer coefficient. The computer-implemented method of generating a three-dimensional structure for a thermal management component further comprises generating, by the processor, the three-dimensional structure for the thermal management component by intercoupling a quantity of the selected three-dimensional elements whose combined surface area equals the determined surface area.

Systems and methods for designing components for use in thermal management applications. A computer-implemented method of generating a three-dimensional structure of a thermal management component is disclosed herein. The computer-implemented method of generating a three-dimensional structure of a thermal management component includes selecting, by a processor, at least one three-dimensional element from a plurality of three-dimensional elements. The computer-implemented method of generating a three-dimensional structure of a thermal management component further includes determining, by a processor, a surface area required to dissipate heat from the first fluid based on the desired temperature difference and the desired heat transfer coefficient. The computer-implemented method of generating a three-dimensional structure of a thermal management component further includes generating, by a processor, the three-dimensional structure of the thermal management component by interconnecting a number of selected three-dimensional elements having a combined surface area equal to the determined surface area.

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 relates to a computer-implemented method for determining a manufacturable cooling structure (6,6') for cooling a semiconductor device (9,13) wherein the method receives as input (10) at least i) physical parameters of the semiconductor device, wherein the physical parameters are related to physical properties of the semiconductor device, and ii) an array of numbers (1) indicative of a spatial power distribution of the semiconductor device, wherein the method comprises the following steps: 1) determining (11), using an topology optimization algorithm, a cooling structure (6,6') based on the received input (10), and 2) providing, as output (12), a filetype containing the determined cooling structure (6,6') in a data format based on which the determined cooling structure (6,6') can be physically manufactured (9), wherein the filetype containing the determined cooling structure is a vector-based filetype). There is further provided a semiconductor device formed using the method of the invention, a corresponding electronic design automation tool and.

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 disclosure presents methods and systems of controlling a counter flow double pipe heat exchanger (DPHE) that includes a hot fluid pipe and a cold fluid pipe. In a method, a temperature error between a reference temperature and a temperature at an outlet of the hot fluid pipe of the counter flow DPHE is determined. A cold fluid mass flow rate is determined from an output of a proportional-integral-derivative (PID) controller based on the temperature error being input to the PID controller. The cold fluid mass flow rate is used for a cold fluid in the cold fluid pipe of the counter flow DPHE. The temperature error is controlled within a predefined range by utilizing parameters of the PID controller that are set by using a harmony search algorithm (HSA) to obtain a minimization of a cost function.

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).

A method of controlling cooling water treatment may involve measuring operating data of one or more downstream heat exchangers that receive cooling water from the cooling tower. For example, the inlet and outlet temperatures of both the hot and cold streams of a downstream heat exchanger may be measured. Data from the streams passing through the heat exchanger may be used to determine a heat transfer efficiency for the heat exchanger. The heat transfer efficiency can be trended over a period of time and changes in the trend detected to identify cooling water fouling issues. Multiple potential causes of the perceived fouling issues can be evaluated to determine a predicted cause. A chemical additive selected to reduce, eliminate, or otherwise control the cooling water fouling can be controlled based on the predicted cause of the fouling.

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 method for the detection of leaks in a heat exchanger having discrete first and second fluid flow paths is disclosed. The method comprising the steps of introducing a contaminant fluid into the first flow path (13) and testing for the presence of the contaminant fluid in the second flow path (14), wherein the pressure in the second flow path (14) is maintained below atmospheric pressure. The pressure in the second flow path may be maintained, for example, at between 0.1 bar (1 x 104 N.m -2) and 1 bar (1 x 105 N.m -2) below atmospheric pressure. Apparatus for carrying out the method is also disclosed.

To provide a deterioration determination method and apparatus, capable of exactly determining deterioration of a facility while eliminating an increase in power consumption by an influence of the disturbance which changes a temperature inside a box-type enclosure.SOLUTION: Provided is a deterioration determination method by which an increase in power consumption caused by an influence of the disturbance which changes a temperature inside a box-type enclosure can be eliminated by extracting, as deterioration determination reference data earlier than the deterioration determination time, data on power consumption at an operation mode in which a cooling facility 60a is operated while suppressing the power consumption more than usual and an ambient temperature of a heat exchanger 60b for exhausting heat to the outside of the facility, and extracting, as determination data, the data on the power consumption and the ambient temperature at the operation mode in which the cooling facility is operated while suppressing the power consumption more than usual, and the deterioration of the facility can be determined properly by grasping an increase in power consumption due to the aged deterioration.SELECTED DRAWING: Figure 1

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.

The present invention relates to a method and to a graphical user interface (300) for managing a process engineering facility comprising at least one heat exchanger, wherein each of these heat exchangers is designed as a plate heat exchanger and each comprises a plurality of heat exchanger blocks, the method comprising: receiving sensor values from sensors which are arranged on or in the at least one heat exchanger; determining parameters which characterize an operation of the at least one heat exchanger on the basis of the received sensor values, wherein a temperature difference between heat exchanger blocks of the at least one heat exchanger is determined as a parameter; processing the sensor values and / or the parameters for a graphical display of a state of the at least one heat exchanger, wherein a service life of the at least one heat exchanger is determined as the state on the basis of the determined temperature difference between the heat exchanger blocks of the at least one heat exchanger, and a graphical display of the service life of the at least one heat exchanger is determined; outputting the processed sensor values and / or parameters in the graphical user interface (300), wherein the graphical display of the service life of the at least one heat exchanger is output in the graphical user interface (300); managing the operation of the at least one heat exchanger on the basis of the output, processed sensor values and / or parameters in the graphical user interface (300), wherein the service life of the at least one heat exchanger is monitored.

The invention relates to a method and a device for determining whether a cooling structure (6, 7) which can be manufactured is used for cooling a semiconductor device (9, 13). The invention relates to a computer-executable method for operating a semiconductor device (6, 6 '), where the method receives as input (10) at least one of i) physical parameters of the semiconductor device, where the physical parameters are physical characteristics related to the semiconductor device, and ii) a digital array (1) indicating a spatial power distribution of the semiconductor device, where the digital array (1) is a digital array (2) indicating a spatial power distribution of the semiconductor device. Wherein the method comprises the following steps: 1) using a topology optimization algorithm to determine (11) a cooling structure (6, 7) on the basis of the received input (10); and 2) based on the determined cooling structure (6, 6 ') can be physically manufactured (9) to provide a file type containing the determined cooling structure (6, 6') as output (12) in a data format, where the file type containing the determined cooling structure is a vector file type. It further provides a semiconductor device formed using the method of the invention, a corresponding electronic design automation tool.

A ground testable spacecraft heat pipe has a spacecraft heat pipe thermally connected for conduction of heat through a heat acquisition cold plate to a heat acquisition riser of a bubble pump heat pipe, enabling a plug-slug flow of heated fluid into a separator, with heated liquid flowing downward through a hear rejection downcomer to a heat rejection pipe section mounted on a heat rejection cold plate for conduction of heat to a bottom end of the spacecraft heat pipe, the now-cooled liquid flowing through a heat rejection riser to an outlet in a condenser that receives the heated vapor from the separator through a vapor condensation conduit, the condenser holding the cooled fluid and vapor condensate that exits the condenser through a heat acquisition downcomer to restart the cycle.

A maintenance method for a tube heat exchanger comprising: - obtaining (S01) measurement signals resulting from the passage of a measurement probe in tubes of the heat exchanger, - determination (S02) of a reference time series corresponding to an average, at each instant, of the measurement signals, - synchronization (S03) of each measurement signal with the reference time series by applying a dynamic time distortion, DTW, on said measurement signal and the reference time series, - search for a possible anomaly (S04) by measuring a possible local deviation of a measurement signal with respect to the other measurement signals.

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.

The invention relates to a heat supply control method and system of a heat source tower heat pump unit, electronic equipment and a storage medium. The heat supply control method specifically comprises the following steps that a heat and mass transfer control body of a heat source tower is divided into a plurality of control body unit models in the air flowing direction; based on the control body unit model, establishing an air side heat quality dynamic model and a solution side heat quality dynamic model interacting with the heat source tower; based on the air side heat mass dynamic model and the solution side heat mass dynamic model, establishing a heat mass balance model of a heat and mass transfer control body of the heat source tower; establishing a heat transfer balance model of the heat source tower heat pump unit based on the working parameters of the heat source tower heat pump unit; and based on the heat mass balance model of the heat transfer and mass transfer control body and the heat transfer balance model of the heat source tower heat pump unit, establishing a target function for maximizing heat supply of the heat source tower heat pump unit, and solving the target function to obtain regulation and control results of the heat source tower heat pump and the heat transfer and mass transfer control body thereof.