Refractory Tile Thickness Profile for Tube Heat Transfer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing refractory tiles for incineration furnaces face challenges in achieving a balance between efficient heat transfer, temperature protection, and cost-effectiveness, while minimizing the risk of dioxin generation and corrosion, and accommodating thermal expansion.
Innovation Solution
A refractory tile design with a groove and fastening receptacle configuration, featuring a non-zero material thickness between these points, and a progressively varying thickness from the fastening receptacle to the groove, ensuring better heat transfer and reduced cracking risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the tile thickness is reduced to minimize material usage and cost, then manufacturing cost decreases, but heat transfer efficiency deteriorates
Solution Approach 1:
The tile employs variable thickness design where the material thickness is greater than zero specifically in the region between the groove and fastening receptacle, while other areas can have reduced thickness. This local quality optimization ensures adequate heat transfer where needed (near the tube contact zone) while minimizing material usage in less critical areas.
Solution Approach 2:
The patent changes the thickness parameter of the tile in a controlled manner, specifying that the material thickness must be greater than zero between the groove and fastening receptacle positions. This parameter optimization balances heat transfer requirements with material conservation, allowing the tile to achieve both efficient heat exchange and cost-effectiveness.
2Use of energy by moving object
If the tile thickness is increased to improve heat transfer efficiency, then heat exchange performance improves, but the risk of cracking increases and material cost increases
Solution Approach 1:
Rather than uniformly increasing tile thickness throughout, the invention applies increased thickness locally only in the region between the groove and fastening receptacle. This localized reinforcement provides sufficient heat transfer capability and structural strength to prevent cracking in the critical area without unnecessarily increasing material usage and cost across the entire tile.
Solution Approach 2:
The patent optimizes the thickness parameter by maintaining it greater than zero specifically in the region between the groove and fastening receptacle, while allowing other areas to have reduced thickness. This controlled parameter change achieves adequate heat exchange performance and cracking resistance where needed while minimizing overall material consumption.
3Adaptability or versatility
If the tile is designed with floating capability to accommodate thermal expansion, then adaptability to thermal cycles improves, but structural stability deteriorates
Solution Approach 1:
The tile incorporates a floating design with a groove that allows the tile to move or adjust its position relative to the tube during thermal cycles. This dynamic capability enables the tile to accommodate thermal expansion and contraction of the tube while maintaining contact, thereby improving adaptability to thermal variations without compromising structural stability during operation.
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 design enhances heat exchange with the heat transfer fluid, maintains low temperatures at the tile's hot face, and reduces the risk of cracking, while being compact and cost-effective.
Implementation Method 1
The low thickness and the high thermal conductivity of the tiles facilitates the transfer of heat from the reactor to the water circulating in the tubes
Implementation Method 2
Tiles forming a refractory lining protect the tubes from physical contact with the materials being combusted and with the smoke and ashes resulting from this combustion
Data Source
AI summary
Refractory tile for protecting a wall of energy recovery tubes. A hot face of the tile is to be exposed to the interior of the furnace. A cold face, opposite the hot face, defines: a groove extending over the entire length of the tile and to receive one the tubes, and a fastening receptacle configured to receive a retaining member to immobilize the tile with respect to the tube. The tile has, in a transverse section plane, at least at each position between the position of the groove and the position of the fastening receptacle, a non-zero material thickness. The thickness is measured between the transverse profile of the hot face and a straight segment, which is referred to as the base and links the ends of the transverse profile of the hot face. The positions are determined along the base.