Humidity control element and method for using the same
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Solution Overview
Problem
Current humidity control systems using hygroscopic materials like silica gel and sodium polyacrylate lack optimal switching times and dimensions for dehumidification and regeneration operations when using metal organic frameworks like MIL-101 (Cr) as the hygroscopic material, leading to inefficient dehumidification capacity and practical limitations.
Innovation Solution
A humidity control element with flat plate members forming first and second flow paths, where MIL-101 (Cr) is used as the hygroscopic material, with adjustable switching times and dimensions to maintain high dehumidification capacity, and a method for optimizing these parameters to extend switching intervals and reduce element size while maintaining performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If sodium polyacrylate is used as hygroscopic material, then the system can perform dehumidification operations, but the switching time must be kept short and element size must be large to maintain dehumidification capacity
Solution Approach 1:
The patent changes the material parameter from sodium polyacrylate to MIL-101 (Cr) metal organic framework, which has fundamentally different adsorption characteristics. This material substitution enables extended switching times while maintaining compact element size, as MIL-101 (Cr) maintains high dehumidification capacity over longer operational periods compared to conventional materials
Solution Approach 2:
The patent employs a metal organic framework (MIL-101 (Cr)) which is a composite material consisting of metal ions coordinated with organic ligands. This composite structure provides both high adsorption capacity and stability, enabling the system to achieve extended switching times without increasing element size, thereby resolving the contradiction between operational duration and compact dimensions
2Duration of action of moving object
If MIL-101 (Cr) is used as hygroscopic material, then extended switching times can be achieved, but optimal switching time and dimension parameters must be determined
Solution Approach 1:
The patent employs feedback mechanisms where dehumidification performance data is continuously monitored and used to optimize switching time and dimensional parameters. By measuring actual dehumidification capacity under various operating conditions, the system identifies optimal parameter combinations for MIL-101 (Cr), enabling extended switching times while managing the complexity of parameter determination through data-driven optimization
3Device complexity
If conventional hygroscopic materials are used, then system configuration is simple, but dehumidification capacity decreases with extended switching times
Solution Approach 1:
The patent changes the fundamental material parameter from conventional hygroscopic materials to MIL-101 (Cr) metal organic framework. This material substitution maintains configuration simplicity while fundamentally improving dehumidification capacity retention over extended switching times, as MIL-101 (Cr) exhibits superior adsorption-desorption cycling stability compared to traditional materials like silica gel or calcium chloride
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 system achieves a high dehumidification capacity with extended switching times and reduced element sizes, compared to systems using sodium polyacrylate, by optimizing switching times and dimensions based on the characteristics of MIL-101 (Cr), ensuring effective dehumidification and regeneration operations.
Implementation Method 1
a dehumidifying flow path is formed in which a metal organic framework MIL-101 (Cr) containing chromium as a metal, as a hygroscopic material adsorbing and desorbing moisture
Implementation Method 2
by causing a regenerating fluid having a relatively high temperature and low humidity to flow through this dehumidifying flow path, moisture can be released from the hygroscopic material to regenerate the hygroscopic material
Implementation Method 3
heat is exchangeable between the first flow path and the second flow path via the flat plate member
Data Source
AI summary
A humidity control element includes a plurality of flat plate members stacked in a state where a first flow path or a second flow path is formed in each space between the flat plate members. Heat is exchangeable between the first flow path and the second flow path via the flat plate members. Each of the flat plate members is formed of any one material of a resin, paper, glass, a metal, and a ceramic, a metal organic framework MIL-101 (Cr) containing chromium as a metal is held on any one of an inner surface of the first flow path and an inner surface of the second flow path, and a switching time between a dehumidification operation and a regeneration operation is relatively long.