Ozone Analyzer Catalytic Chamber Temperature Measurement
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Solution Overview
Problem
Existing methods for measuring ozone concentration in industrial-grade gas streams face challenges such as bias introduction due to differing properties between reference and measurement streams, and require compensation for variations in pressure and temperature, leading to complexity and potential inaccuracies in measurement.
Innovation Solution
A method utilizing a catalytic chamber with catalytic pellets that decompose ozone into oxygen, measuring temperature differences to evaluate ozone concentration, while minimizing thermal losses through chamber design and insulation, and using a heat removing system to maintain consistent conditions, allowing for direct proportional measurement of ozone concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reference stream and measurement stream approach is used to measure industrial grade ozone concentration, then the measurement can be performed, but biases are introduced due to differing properties between the reference stream and measurement stream
Solution Approach 1:
The patent extracts and eliminates the reference stream from the measurement system, using only a single measurement stream that passes through the catalytic chamber. This removes the source of bias between reference and measurement streams while maintaining measurement capability through direct temperature difference measurement against ambient conditions.
Solution Approach 2:
The patent introduces a catalytic chamber filled with catalytic pellets as an intermediary component that selectively decomposes ozone in the measurement stream. This catalyst bed acts as the mediating element that creates a measurable temperature change proportional to ozone concentration, enabling accurate measurement without requiring a reference stream.
2Measurement precision
If chemical decomposition of ozone is used to generate heat for measurement, then ozone concentration can be determined, but excess heat is generated requiring cooling down to reference temperature
Solution Approach 1:
The patent employs dynamic thermal management by allowing the measurement stream to be heated by ozone decomposition and then cooled back to ambient temperature in a controlled manner. The system dynamically balances heat generation from catalysis with heat removal, enabling continuous measurement without requiring the stream to be maintained at a constant high temperature.
Solution Approach 2:
The patent discards the excess heat generated by ozone decomposition by allowing it to dissipate to the ambient environment, and recovers the thermal energy by using the temperature difference between the heated measurement stream and ambient air as the measurement signal. This converts the unwanted heat into a useful measurement parameter.
3Measurement precision
If compensation for pressure and temperature variations is implemented, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The patent implements self-service compensation by using the ambient environment itself as the reference. The ambient air temperature and pressure automatically serve as the baseline for comparison, eliminating the need for separate reference streams, temperature control systems, or active compensation mechanisms. The system self-regulates by naturally equilibrating with ambient conditions.
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 approach provides a reliable, simplified method for measuring ozone concentration independent of catalytic pellet performance, minimizing thermal losses and ensuring accurate results by directly correlating temperature differences with ozone concentration, thus improving measurement precision and reducing operational risks.
Implementation Method 1
decomposing a totality of the ozone of the sample flow of gas into oxygen in an exothermic reaction along the ozone decomposition path of the catalytic chamber
Implementation Method 2
measuring a first temperature value at a first position and measuring a second temperature value at a second position
Data Source
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AI summary
The method for analyzing an ozone concentration comprising the steps of: providing at least one catalytic chamber having an ozone decomposition path between an inlet portion and an outlet portion thereof; receiving a sample flow of gas containing ozone by the inlet portion of the at least one catalytic chamber and along the ozone decomposition path; decomposing a totality of the ozone of the sample flow of gas into oxygen in an exothermic reaction along the ozone decomposition path of the catalytic chamber; measuring a first temperature value at a first position and measuring a second temperature value at a second position, the first and second positions being associated with the inlet and outlet portions; evaluating the ozone concentration of the sample flow of gas based on the temperature difference between the second temperature value and the first temperature value and calibration data; and generating a signal indicating the evaluated ozone concentration.