Absorptive heat pump
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The production process for spherical activated carbon is complex, making it difficult to find an adsorbent with an effective adsorption amount comparable to or greater than that of spherical activated carbon, while also being easily producible.
Innovation Solution
The use of a metal-organic framework (MOF) as an adsorbent in an adsorption heat pump, specifically MOF-200, which has a high effective adsorption amount and is easily produced compared to spherical activated carbon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If spherical activated carbon is used as an adsorbent, then high adsorption performance is achieved, but the production process becomes complex
Solution Approach 1:
The patent changes the fundamental parameter of the adsorbent material from traditional spherical activated carbon to metal-organic framework (MOF) materials. This parameter change enables achieving comparable or higher adsorption capacity while simplifying the production process, as MOF materials can be synthesized through more straightforward chemical methods compared to the complex activation processes required for activated carbon
Solution Approach 2:
The patent employs metal-organic framework materials which are composite materials consisting of metal ions or clusters coordinated with organic ligands. This composite structure provides both the high adsorption performance needed for carbon dioxide capture and the ease of production through controlled synthesis methods, resolving the contradiction between performance and manufacturing complexity
2Productivity
If an adsorbent with high effective adsorption amount is selected, then refrigeration efficiency is improved, but production cost increases
Solution Approach 1:
The patent changes the material parameter from conventional adsorbents to metal-organic frameworks, which offer tunable pore sizes and surface chemistries that can be optimized for specific refrigeration applications. This enables high refrigeration efficiency while maintaining cost-effectiveness through targeted synthesis rather than requiring expensive rare materials
Solution Approach 2:
The patent utilizes the porous structure of metal-organic framework materials to achieve high effective adsorption amounts for carbon dioxide. The controlled porosity provides high refrigeration efficiency through enhanced adsorption capacity, while the synthetic nature of these porous materials allows for cost-effective production compared to naturally occurring or heavily processed adsorbents
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 metal-organic framework MOF-200 provides a high effective adsorption amount for carbon dioxide, allowing for efficient operation of the adsorption heat pump while being cost-effective and easier to produce than traditional adsorbents.
Implementation Method 1
an adsorption heat pump that uses carbon dioxide as refrigerant and uses spherical activated carbon as an adsorbent
Implementation Method 2
The evaporator 11 evaporates liquid refrigerant to generate gas refrigerant
Implementation Method 3
The condenser 12 condenses gas refrigerant to generate liquid refrigerant
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A process for producing spherical activated carbon is complex; therefore, an adsorbent that has an effective adsorption amount larger than or equal to that of spherical activated carbon and that is easily produced is desired. An adsorption heat pump (100) uses, as refrigerant, carbon dioxide and uses, as an adsorbent (15), a metal-organic framework including a metal ion and an organic ligand. The metal-organic framework is, for example, MOF-200.