Ozone Generator Electrode Profiling for Temperature Control
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Solution Overview
Problem
Existing ozone generators face inefficiency due to temperature gradients along the tubes, which reduce ozone yield as temperature increases, and current solutions to maintain constant effective reaction temperature are complex and costly.
Innovation Solution
An ozone generator design with a high-voltage electrode and counter-electrode that maintain constant mean spacing and sparking distance, where the number of surface locations for silent discharges decreases in the gas flow direction, reducing electrical power and effective reaction temperature, achieved through profiling of electrodes or dielectrics, such as wire braiding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of surface locations for silent discharges is reduced in the flow direction, then the electrical power input and effective reaction temperature are reduced, improving ozone yield, but the electrode design becomes more complex
Solution Approach 1:
The electrode surface is designed with locally varying discharge properties. The number of active surface locations for silent discharges decreases in the flow direction, creating zones with different power densities. This local variation in discharge activity allows temperature control along the tube length, maintaining optimal conditions for ozone formation while accepting increased manufacturing complexity.
Solution Approach 2:
The electrode design incorporates dynamic control of discharge distribution through its geometric profile. By varying the number of surface locations along the flow direction, the system dynamically adjusts the effective reaction temperature profile, optimizing ozone yield at different positions rather than using a uniform design throughout.
2Temperature
If cooling measures are applied to dissipate waste heat, then the temperature is controlled, but the overall efficiency of the ozoniser is reduced due to the temperature gradient along the tubes
Solution Approach 1:
Instead of applying cooling measures after temperature rise, the electrode design preliminarily controls the power input distribution to prevent excessive temperature rise in the first place. By reducing the number of discharge surface locations in the flow direction, the system pre-regulates the temperature profile, minimizing the need for active cooling and reducing the harmful temperature gradient effect.
3Ease of manufacture
If conventional electrode designs with constant power distribution are used, then the manufacturing is simpler, but the effective reaction temperature increases along the tube length, reducing ozone yield
Solution Approach 1:
The electrode is designed with non-uniform discharge characteristics along its length, with the number of active surface locations varying in the flow direction. This local differentiation creates zones of different power density, compensating for the temperature rise along the tube and maintaining optimal reaction conditions for ozone formation, thereby improving yield despite increased manufacturing complexity.
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
This design enhances ozone generator efficiency by reducing electrical power input and maintaining a consistent effective reaction temperature, simplifying and cost-reducing the manufacturing process while improving ozone production.
Implementation Method 1
Anode rods with dielectric are arranged in these discharge chambers, which during operation are impinged upon by a high voltage and which cause a silent discharge between the anode rod and the tube. An oxygenated gas or pure oxygen is passed through this interstice. The silent discharge generates ozone molecules in the oxygenated gas from oxygen molecules.
Data Source
AI summary
An ozone generator includes a high-voltage electrode and at least one counter electrode, which define an interstice in which at least one dielectric is arranged and through which a gas flows in the flow direction. The high-voltage electrode and the at least one counter electrode are provided with a connection for an electrical voltage supply to generate silent discharges which are discharged from surface discharge locations. The mean sparking distance and the mean spacing between the high-voltage electrode and the at least one counter-electrode are constant. The number of surface discharge locations decreases in the flow direction.