Humidity control agent and device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing moisture control materials for air conditioners and absorption refrigerators face challenges such as corrosiveness to metals, instability, and high viscosity, which affect their moisture absorption properties and long-term usability.
Innovation Solution
A moisture control material composed of a pyrazolium cation and a phosphate ester anion, specifically designed to provide excellent moisture absorption properties with low viscosity and reduced corrosiveness to metals, is developed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional moisture control materials (lithium chloride aqueous solution, calcium chloride aqueous solution, triethylene glycol, or ionic liquids) are used, then moisture absorption properties are achieved, but corrosiveness to metals occurs
Solution Approach 1:
The patent changes the chemical composition parameters by using organic salts (pyrazolium cation with phosphate ester anion) instead of conventional inorganic salts or traditional ionic liquids, thereby reducing corrosiveness while maintaining moisture absorption capacity
Solution Approach 2:
The patent employs a composite ionic liquid system combining specific pyrazolium cation and phosphate ester anion, creating a new class of moisture control material that balances moisture absorption performance with reduced metal corrosiveness
2Quantity of substance
If certain ionic liquids are used for moisture control, then moisture absorption properties are improved, but viscosity increases
Solution Approach 1:
The patent optimizes the molecular structure parameters of the ionic liquid by selecting specific pyrazolium cations and phosphate ester anions with appropriate chain lengths and structures, achieving low viscosity while maintaining high moisture absorption capacity
3Quantity of substance
If conventional moisture control materials are used, then initial moisture absorption capacity is achieved, but stability and long-term usability deteriorate
Solution Approach 1:
The patent develops stable ionic liquids with appropriate molecular structures that resist decomposition and maintain performance over time, replacing unstable conventional materials
Solution Approach 2:
The patent adjusts chemical composition parameters to enhance thermal stability and chemical stability, ensuring long-term usability in air conditioner and absorption refrigerator applications
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 material exhibits superior moisture absorption capacity and water vapor exchange efficiency with low viscosity and reduced corrosiveness, making it suitable for use in both open and closed systems, particularly in desiccant-type air conditioners.
Implementation Method 1
a moisture control material comprising a salt composed of a pyrazolium cation represented by the following formula (N1) and a phosphate ester anion
Data Source
AI summary
A moisture control material including a salt composed of a pyrazolium cation represented by the formula (N1) and a phosphate ester anion. In formula (N1), RN1, RN2, RN3, RN4 and RN5 are each independently a hydrogen atom, or an alkyl group having 1 to 12 carbon atoms which optionally has a hydroxy group and optionally includes one or more oxygen atoms in the chain. One or more of RN1 and RN2 which are substituents on a nitrogen atom that constitutes a 5-membered ring are alkyl groups having 1 to 12 carbon atoms, which optionally have a hydroxy group and optionally include one or more oxygen atoms in the chain.