Multi-Caloric Effects Testing Device for Solid-State Cooling
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Solution Overview
Problem
Current technologies lack specialized equipment and direct methods to characterize multi-caloric effects, hindering the application of caloric materials in solid-state cooling, which is essential for improving cooling power and efficiency.
Innovation Solution
A testing device for multi-caloric effects is developed, comprising a dynamic magnetic field application assembly, a stress application assembly, a pulse voltage application assembly, and an infrared thermal imaging temperature acquisition assembly, allowing for simultaneous loading/unloading of multiple physical fields and synchronous temperature acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multi-field coupling characterization is implemented, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The testing device is divided into separate functional modules: magnetic field application module, electric field application module, stress application module, and temperature acquisition module. Each module independently applies or measures one specific physical quantity, allowing complex multi-field coupling characterization to be achieved through coordinated operation of simpler subsystems.
Solution Approach 2:
The testing device integrates multiple field application capabilities (magnetic, electric, stress) and temperature measurement into a single universal platform. The sample can be subjected to different combinations of physical fields while maintaining consistent measurement conditions, enabling comprehensive characterization of multi-caloric effects without requiring separate specialized equipment for each effect type.
2Productivity
If simultaneous multi-field loading is implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
Multiple field application systems (magnetic field generator, electric field generator, stress application mechanism) are merged into a single integrated testing device with coordinated control. This allows simultaneous application of multiple physical fields to the sample during one test cycle, dramatically improving productivity by eliminating the need for separate sequential testing for different field effects.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device enables accurate characterization of multi-caloric effects by configuring various stress, electric, and magnetic fields, and temperature conditions, thereby enhancing the understanding and application of caloric materials in solid-state cooling.
Implementation Method 1
dynamic magnetic field application assembly includes a first linear reciprocating device, a first guide rail, permanent magnet holding devices, and permanent magnets
Implementation Method 2
The dynamic magnetic field application assembly includes a first linear reciprocating device, a first guide rail, permanent magnet holding devices, and permanent magnets
Implementation Method 3
stress application assembly includes a second linear reciprocating device, a second guide rail, a first sample clamp, and a second sample clamp
Implementation Method 4
pulse voltage application assembly includes a high-voltage amplifier, a pulse-pattern generator, and a photoelectric sensor
Implementation Method 5
infrared thermal imaging temperature acquisition assembly is used to collect information on temperature variation in the sample surface
Data Source
AI summary
A testing device for multi-caloric effects in the solid-state cooling technology includes a dynamic magnetic field application assembly, a stress application assembly, a pulse voltage application assembly, and an infrared thermal imaging temperature acquisition assembly. In the dynamic magnetic field application assembly, permanent magnetic holding devices hold permanent magnets, which are slidably mounted on the first guide rail, with two permanent magnets positioned parallel to each other at a distance. The stress application assembly is located between the two first guide rails. The sample is clamped between the first and second sample clamps, and the pulse voltage application assembly is connected to the electrode plates of the sample clamps via wires. The advantages are that it allows for the application of stress, electric fields, and magnetic fields to solid materials, individually or simultaneously, and enables the non-destructive collection of temperature changes in the sample.