Grooved Deflector for Condensation Heat Exchanger Cooling
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Solution Overview
Problem
Current water tube condensation heat exchangers face inefficiencies due to high temperatures in the condensation chamber, pollutant emissions from refractory materials, and shorter lifespan of components, leading to increased operating costs and emissions of nitrogen oxides and carbon monoxide.
Innovation Solution
A deflector design comprising two cups and a central partition made of good thermal conductor materials, with circulation grooves that allow heat transfer fluid to circulate, cooling the rear wall and reducing temperature, eliminating the need for refractory materials and enhancing exchanger efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a refractory material disc is used as a deflector in the combustion chamber, then the condensation chamber is thermally insulated, but the temperature in the condensation chamber remains too high, reducing exchanger efficiency
Solution Approach 1:
The patent removes the refractory material disc from the combustion chamber, extracting the source of thermal radiation that was preventing adequate cooling of the condensation chamber. This elimination allows the condensation chamber temperature to drop to optimal levels for efficient heat exchange, directly resolving the temperature control issue while improving overall exchanger efficiency.
2Object-affected harmful factors
If a refractory material disc is used as a deflector, then the condensation chamber is thermally insulated, but the refractory material radiates heat into the combustion chamber, creating nitrogen oxides and carbon monoxide pollutants
Solution Approach 1:
The patent eliminates the refractory material disc that was causing thermal radiation into the combustion chamber and subsequent pollutant formation. By removing this heat-radiating component, the system reduces nitrogen oxide and carbon monoxide emissions without compromising condensation chamber insulation, as alternative insulation methods are employed.
Solution Approach 2:
The patent converts the harmful thermal radiation from refractory materials into a beneficial cooling effect by redesigning the deflector to allow controlled heat transfer pathways. The hot gases are directed to cool the condensation chamber walls through designated channels, transforming the previously harmful radiant heat into useful convective cooling that reduces pollutant formation.
3Duration of action of stationary object
If a refractory material disc is used as a deflector, then the combustion chamber is separated from the condensation chamber, but the disc has a shorter lifespan than the tube bundles, requiring frequent replacement and increasing operating costs
Solution Approach 1:
The patent replaces the expensive, short-lived refractory material disc with a durable metal deflector that has a lifespan matching or exceeding the tube bundles. This substitution eliminates the need for frequent deflector replacements, reducing maintenance costs and operational disruptions while maintaining effective chamber separation.
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 solution effectively lowers the temperature of exiting gases, reduces pollutant emissions, and extends the lifespan of the exchanger by eliminating the refractory disc, thereby improving overall efficiency and reducing operating costs.
Implementation Method 1
The two cups and the central partition are made of a material that is a good thermal conductor
Implementation Method 2
a circulation groove, which extends over at least part of said bottom, the two cups being assembled together in such a way fluid-tight... so that said heat transfer fluid can circulate from the inlet connector to the outlet connector
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a deflector for a condensation heat exchanger and to an exchanger provided with such a deflector. Said deflector (2) is characterised in that it includes two front (3) and rear (4) cups of which the inner surface (311, 411) of the bottom is designed in relief so as to have at least one circulation groove (34, 44), the two cups being assembled on either side of a central partition (5) so that each groove forms, with said partition, a channel in which a heat-transfer fluid is intended to circulate, the channels of the front and rear cups being connected via an opening (50) bored into said central partition (5), so that said heat-transfer fluid can circulate from an inlet coupling (40) to an outlet coupling (30) of the deflector, through said channels by flowing on either side of said central partition.