Reactive Sintered Magnetic Articles for Heat Exchange
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current magnetic heat exchange technologies face limitations in scalability and efficiency due to the complexity and cost of producing magnetocaloric materials with optimal Curie temperatures for widespread applications in climate control and refrigeration.
Innovation Solution
Development of a reactive sintered magnetic article with a composition of (La1−aMa)(Fe1−b−cTbYc)13−d, where M, T, and Y are specific elements, allowing for the production of magnetocaloric phases with adjustable Curie temperatures and improved mechanical properties through a simpler manufacturing process, enabling more efficient and cost-effective magnetic refrigeration systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional magnetic heat exchange materials are used, then magnetocaloric effect is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent modifies the chemical composition parameters of the magnetocaloric material by incorporating specific elements (M=Ce, Pr, or Nd; T=Co, Ni, Mn, or Cr; Y=Si, Al, As, Ga, Ge, Sn, or Sb) in controlled amounts to achieve optimal Curie temperature and magnetocaloric effect while simplifying manufacturing
Solution Approach 2:
The invention creates a composite magnetocaloric material with multiple phases including (La1-aMa)(Fe1-b-cTbYc)13-d and secondary phases, combining different elements to achieve both desired magnetic properties and improved mechanical strength, thereby resolving the contradiction between performance and manufacturing complexity
2Productivity
If magnetocaloric materials with optimal Curie temperatures are produced, then refrigeration efficiency improves, but production cost increases
Solution Approach 1:
The patent adjusts compositional parameters (values of a, b, c, d) to tune the Curie temperature to match specific application requirements, optimizing refrigeration efficiency while controlling production costs through controlled use of rare earth elements
Solution Approach 2:
The invention applies different element substitutions at specific lattice positions (La site, Fe site) to locally optimize magnetic properties without requiring expensive bulk material modifications, thereby improving efficiency while controlling overall production cost
3Adaptability or versatility
If magnetic heat exchangers are designed for broader applications, then versatility increases, but material performance consistency decreases
Solution Approach 1:
The patent develops a universal magnetocaloric material composition framework (La1-aMa)(Fe1-b-cTbYc)13-d that can be adapted to different applications by adjusting parameters a, b, c, d and selecting different M, T, Y elements, maintaining performance consistency across climate control, refrigeration, and automotive applications
Solution Approach 2:
The invention enables dynamic adjustment of material properties by varying compositional parameters to match different operating temperature ranges and magnetic field conditions, allowing the same base material system to serve multiple applications with consistent performance
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 reactive sintering process results in articles with enhanced mechanical strength, corrosion resistance, and reduced grain size, facilitating the production of magnetocaloric materials suitable for a broader range of applications, including climate control and refrigeration, with increased efficiency and reduced production costs.
Implementation Method 1
reactive sintering the green body to form a magnetocaloric phase
Implementation Method 2
The magnetocaloric effect describes the adiabatic conversion of a magnetically induced entropy change to the evolution or absorption of heat
Data Source
AI summary
Method of manufacturing a reactive sintered magnetic article, a composite article comprising a mantle and at least one core and a laminate article comprising two or more composite articles are provided which each comprise (La1−aMa) (Fe1−b−c−Tb−Y−c)13−dXe, wherein 0≦a≦0.9, 0≦b≦0.2, 0.05≦c≦0.2, −1≦d≦+1, 0≦e≦3.