CN-122015566-A - TPMS heat exchanger based on intelligent response of phase change material

CN122015566ACN 122015566 ACN122015566 ACN 122015566ACN-122015566-A

Abstract

The invention discloses a TPMS heat exchanger based on intelligent response of a phase change material, which relates to the technical field of heat exchange and heat energy management, and comprises a heat storage unit, a sensor group and a controller, wherein a three-period minimum curved surface-based stepped hole composite heat storage material is packaged in the heat storage unit and is used for absorbing redundant heat and generating phase change when heat load is increased, the sensor group is used for monitoring flow resistance parameters and heat transfer parameters in real time, the controller is used for identifying the phase change state and the phase change degree of the heat storage material through a built-in data driving model according to monitoring data and generating a self-adaptive control signal to adjust system operation parameters, and the three-period minimum curved surface structure is optimized through a data driving method and active heat management is realized based on phase change state feedback, so that the comprehensive performance of the heat exchange system corresponding to dynamic heat load can be remarkably improved.

Inventors

CHANG HONGLIANG
Qi Hongkun
LI XIONGHUI
GAO LONG
WEN WENBIN
XU MINGJUN
LI LONG
SUN XIHAN

Assignees

东北电力大学

Dates

Publication Date: 20260512
Application Date: 20260402

Claims (9)

1. The TPMS heat exchanger based on the intelligent response of the phase change material is characterized by comprising a heat storage unit (1), a sensor group and a controller (6); the heat storage unit (1) is connected with an external heat management system through an inlet connecting pipe (2) and an outlet connecting pipe (3), a porous framework formed by three-period minimum curved surfaces is arranged in the heat storage unit (1), phase-change heat storage materials are filled in the heat storage unit, and the porous framework and the phase-change heat storage materials together form a stepped hole composite heat storage structure; The sensor group is configured to monitor flow resistance parameters and heat transfer parameters of the heat storage unit (1) in real time; the controller (6) is in communication connection with the sensor group and is configured to receive real-time monitoring data from the sensor group, identify the phase change state and the phase change degree of the heat storage material through a built-in data driving model based on the real-time monitoring data, and generate a self-adaptive control signal according to the identified phase change state and the identified phase change degree to adjust the operation parameters of the system.
2. The TPMS heat exchanger based on intelligent response of phase change materials as recited in claim 1, wherein the sensor group comprises a pressure sensor group (4) for monitoring inlet and outlet pressure differences of the heat storage unit (1) and a temperature sensor group (5) for monitoring temperature, the pressure sensor group (4) comprises an inlet pressure sensor (401) and an outlet pressure sensor (402) for monitoring inlet and outlet pressure differences of the heat storage unit (1), the temperature sensor group (5) comprises an inlet temperature sensor (501), an outlet temperature sensor (502) and an internal temperature sensor array (503) for monitoring inlet temperature, outlet temperature and temperature distribution inside the heat storage unit (1), the flow resistance parameter is a flow resistance value calculated based on the inlet and outlet pressure differences, and the heat transfer parameter comprises inlet temperature, outlet temperature and temperature distribution inside the heat storage unit (1).
3. The TPMS heat exchanger based on intelligent response of phase change materials as set forth in claim 1, wherein the three-period minimum curved surface in the heat storage unit (1) is PRIMITIVE curved surfaces, and units with porosity decreasing from an inlet to an outlet in the flowing direction are connected with each other to form a gradient structure.
4. The TPMS heat exchanger based on intelligent response of phase change material as set forth in claim 1, wherein the data driving model is a long-term and short-term memory neural network trained by a machine learning algorithm, and the long-term and short-term memory neural network takes time sequence data of the flow resistance parameter and the heat transfer parameter as input to output liquid phase rate or residual heat storage capacity of the cascade pore composite heat storage material.
5. The TPMS heat exchanger as recited in claim 4, wherein the controller (6) is further configured to determine that the system is in a high thermal load state and generate a corresponding control signal when a liquid phase ratio output by the data driving model exceeds a first preset threshold or the remaining thermal storage capacity is below a second preset threshold.
6. The TPMS heat exchanger as recited in claim 5, wherein the adaptive control signal is generated based on a proportional-integral-derivative control algorithm.
7. The TPMS heat exchanger based on intelligent response of phase change materials as set forth in claim 1, wherein the controller (6) is connected with an executing mechanism through a control line, the executing mechanism comprises a flow regulating valve and a heat exchanger shell (7), and the self-adaptive control signal is used for at least one of regulating flow of circulating working media in a system, starting or adjusting power of an auxiliary cooling device, triggering system overheat pre-warning, and reducing power output of heat source equipment.
8. The TPMS heat exchanger as set forth in claim 1, wherein the material of the three-period minimum curved surface is a metal material or a ceramic material, and the metal material is at least one of stainless steel, aluminum alloy or die steel.
9. The TPMS heat exchanger based on intelligent response of phase change materials as set forth in claim 1, wherein the phase change materials in the cascade hole composite heat storage material are paraffin or inorganic salt phase change materials.

Description

TPMS heat exchanger based on intelligent response of phase change material Technical Field The invention relates to the technical field of heat exchange and heat energy management, in particular to a TPMS heat exchanger based on intelligent response of a phase change material. Background Modern high-technology equipment often faces severe transient thermal shock problems in the operation process, and in the fields of aerospace, energy power and the like, severe thermal load changes can lead to equipment performance reduction, service life shortening and even thermal failure accidents. To solve the problem of transient thermal shock, phase change materials are receiving attention because of their ability to absorb or release a large amount of latent heat. However, conventional phase change materials suffer from the inherent disadvantages of low thermal conductivity and slow thermal response. In the prior art, heat transfer is enhanced by adding high-heat-conductivity nano particles, embedding metal foam or designing fin structures and the like, but the problems of discontinuous heat transfer paths, poor structural controllability, large interface thermal resistance with phase change materials and the like still exist, and the active sensing capability for the phase change process is lacked. In recent years, a three-period minimum curved surface structure is applied to heat exchanger design due to unique topological characteristics, and part of researches are carried out on the three-period minimum curved surface structure as a framework filling phase change material so as to construct an efficient heat transfer network. However, most of the existing applications take the TPMS structure as a static component with fixed parameters, the geometric programmable potential of the TPMS structure cannot be fully utilized for carrying out working condition adaptability optimization design, and deep integration with an intelligent control system is not realized. Therefore, a heat exchange system which can optimize structural design according to working conditions, accurately sense a phase change state in real time and realize self-adaptive intelligent regulation and control based on sensing data is needed, so that the problems that in the prior art, structural adaptability is poor, sensing capability of a phase change process is insufficient and active closed loop thermal management cannot be realized are solved. Disclosure of Invention The invention aims to provide a TPMS heat exchanger based on intelligent response of a phase change material, which aims to solve the problems in the prior art. In order to achieve the aim, the invention provides the technical scheme that the TPMS heat exchanger based on intelligent response of the phase change material, The TPMS heat exchanger comprises a heat storage unit, a sensor group and a controller, wherein the TPMS is a ‌ three-period minimum curved surface, is a three-dimensional curved surface structure with a periodic repeating unit and is used for improving heat exchange efficiency; The heat storage unit is internally provided with a porous framework formed by three-period minimum curved surfaces, a through space formed by the porous framework is internally filled with a step hole composite heat storage material, and the step hole composite heat storage material is used for absorbing redundant heat and generating phase change when the heat load of the system is increased; the sensor group is configured to monitor flow resistance parameters and heat transfer parameters of the heat storage unit in real time; The controller is in communication connection with the sensor group and is configured to receive real-time monitoring data from the sensor group, identify the phase change state and the phase change degree of the heat storage material through a built-in data driving model based on the real-time monitoring data, and generate a self-adaptive control signal according to the identified phase change state and the identified phase change degree to adjust the operation parameters of the system. The three-period minimum curved surface in the heat storage unit is PRIMITIVE curved surfaces, units with porosity decreasing from an inlet to an outlet in the flowing direction are mutually connected to form a gradient structure, the expression of the PRIMITIVE curved surface is cosX + cosY + cosZ =c (Z), wherein X=2αpi X, Y=2βpi Y, Z=2γpi Z, X, Y and Z represent rectangular coordinates, alpha, beta and gamma are used for controlling the unit size of the three-period minimum curved surface, c (Z) is used for controlling the porosity of the unit, the porosity is uniformly changed along the Z axis of the flowing direction, and the expression of c (Z) is c (Z) =c min+(cmax-cmin)×[(z-zmin)/(zmax-zmin). Where c min is the set minimum porosity, c max is the set maximum porosity, z min is the z-axis coordinate minimum, and z max is the z-axis coordinate maximum. The sensor group comprises a pre