Micro-patterned Reactor Wall Heat Transfer
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Solution Overview
Problem
The heat transfer resistance at the interface between microfibrous entrapped catalysts (MFECs) and the reactor wall limits the efficiency of heat transfer in exothermic and endothermic processes, necessitating improvements in effective thermal conductivity and contact area.
Innovation Solution
Roughening the reactor wall surface with micro-patterns, enhancing contact efficiency by forming a continuous phase with the same material as the fibers, and using finer fibers to increase the number of contact points and surface area for improved heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the heat transfer area at the wall-MFEC interface is increased, then the heat transfer rate is improved, but the device complexity increases
Solution Approach 1:
The interface between the reactor wall and MFEC is segmented into multiple discrete contact points rather than a continuous interface. This segmentation allows for increased effective heat transfer area through multiple localized contact zones while maintaining relative structural simplicity.
Solution Approach 2:
The contact points between the mesh media and reactor wall are positioned at specific spatial locations and orientations, utilizing three-dimensional positioning to maximize heat transfer area without requiring complex interface structures across the entire surface.
2Productivity
If the effective thermal conductivity at the internal wall is improved, then the heat transfer rate is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The mesh media is designed with locally optimized properties at the contact points with the reactor wall, where thermal conductivity and contact pressure are enhanced specifically at these interfaces rather than requiring uniform high precision throughout the entire structure.
Solution Approach 2:
The physical parameters of the mesh media (such as fiber diameter, mesh size, and material composition) are adjusted to optimize thermal conductivity at the wall interface, allowing for improved heat transfer through material property changes rather than precise geometric manufacturing.
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
Significantly enhances heat transfer rates by increasing the contact area and thermal conductivity, allowing for more uniform temperature control and faster reaction rates in temperature-sensitive processes.
Implementation Method 1
The sintered metal microfibrous structure can collect the heat from the catalyst particles, where the reaction heat is generated and transfer it to the internal reactor wall-MFEC contacting interface
Implementation Method 2
roughening the contacting surface of the interface between the mesh media and the reactor wall
Implementation Method 3
enhancing the contacting efficiency at the contacting points between the mesh media and the reactor wall
Data Source
AI summary
Methods for improving heat transfer at the interface between the internal reactor wall and mesh media containing microfibrous entrapped catalysts (MFECs) and/or microfibrous entrapped sorbents (MFESs) are described herein. Improved (e.g., more rapid) heat transfer can be achieved using a variety of approaches including increasing the contacting area of the interface between the mesh media and the reactor wall so that more contacting points are formed, enhancing the contacting efficiency at the contacting points between the mesh media and the reactor wall, increasing the number of contact points between the mesh media and the reactor wall using fine fibers, and combinations thereof.