Serpentine Gas Flow Path in Heat Exchange Furnace
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Solution Overview
Problem
Conventional biomass heat exchange furnaces suffer from reduced heat exchange efficiency due to rapid air flow and a single large upper gas transfer chamber, which limits the heat exchange process.
Innovation Solution
The furnace design includes upright buffer plates to divide the heat exchange space into multiple air chambers and features upper and lower gas-guiding members with multiple serpentine gas flow paths, allowing for extended air flow time and increased heat exchange contact area, thereby enhancing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air is forced into the heat exchange space for heat exchange contact with combustion gases, then the combustion gases are cooled and hot air is produced, but the air flow speed is rapid which reduces heat exchange efficiency
Solution Approach 1:
The heat exchange space is divided into multiple air chambers by buffer plates, creating a segmented flow path that extends the air flow time and improves heat exchange efficiency without reducing the overall productivity of the system
2Productivity
If a single large upper gas transfer chamber is used, then the structure is simple, but the heat exchange efficiency is reduced due to the large volume and single chamber configuration
Solution Approach 1:
The upper gas transfer chamber is divided into multiple smaller chambers by buffer plates, creating a multi-chamber serpentine flow path that increases heat exchange efficiency while maintaining structural simplicity through the use of partition plates
Solution Approach 2:
The gas flow path is designed in a serpentine (sinuous) configuration rather than a straight path, allowing combustion gases to traverse a longer distance through the heat exchange space, increasing contact time and heat exchange efficiency
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 improved design extends the time for air flow through the heat exchange space and increases the heat exchange contact area, significantly enhancing the overall heat exchange efficiency of the furnace.
Implementation Method 1
ambient or fresh air is forced into the heat exchange furnace for heat exchange contact with the combustion gases
Implementation Method 2
The upper and lower gas-guiding members cooperate with the conduit sets so as to constitute cooperatively at least one serpentine gas flow path disposed within the heat exchange space
Data Source
AI summary
A heat exchange furnace includes a surrounding wall disposed around a combustion furnace unit so as to define an annular heat exchange space therebetween. Upright buffer plates divide the heat exchange space into a plurality of air chambers communicated with each other. Upper and lower gas-guiding members are connected respectively and fixedly to upper and lower ends of the surrounding wall. Conduit sets are disposed within the heat exchange space, and cooperate with the upper and lower gas-guiding members so as to constitute cooperatively at least one serpentine gas flow path disposed within the heat exchange space.