Chiller Water Sampling Device for Peroxyacetic Acid Control
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Solution Overview
Problem
There is a need to accurately assess and control the level of peroxyacetic acid in poultry chiller water to ensure effective antimicrobial results, as existing methods lack precision in monitoring and maintaining optimal concentrations.
Innovation Solution
A chiller water sampling device and system that includes flow meters, pH and peroxyacetic acid sensing devices, and a controller to monitor and adjust the concentration of peroxyacetic acid, ensuring it remains within a suitable pH range for accurate measurement and effective antimicrobial activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If peroxyacetic acid is used as an antimicrobial agent in poultry chillers, then microbial activity is reduced, but accurate assessment of the acid level becomes necessary to ensure efficacy
Solution Approach 1:
The patent replaces manual sampling and laboratory analysis with automated electronic sensing devices that directly measure peroxyacetic acid concentration and pH levels in the chiller water, enabling continuous real-time monitoring without mechanical intervention
Solution Approach 2:
The system incorporates feedback loops where sensor measurements of peroxyacetic acid levels and pH are continuously fed back to control systems that automatically adjust dosing rates and alert operators when levels fall outside predetermined ranges, ensuring consistent antimicrobial efficacy
2Measurement precision
If complex monitoring systems are implemented to accurately measure peroxyacetic acid levels, then measurement precision improves, but device complexity increases
Solution Approach 1:
The sampling device integrates multiple functions into a single unit: it performs automated sampling, pH measurement, peroxyacetic acid concentration sensing, data logging, and alarm notification, eliminating the need for separate equipment for each function
Solution Approach 2:
The system automatically performs sampling at predetermined intervals without manual intervention, self-calibrates sensors, and autonomously generates alerts when measurements fall outside acceptable ranges, reducing operational complexity
3Measurement precision
If continuous monitoring of pH and peroxyacetic acid levels is performed, then measurement precision and reliability improve, but energy consumption increases
Solution Approach 1:
The system performs measurements at predetermined intervals rather than continuously, with sampling and sensing occurring at scheduled times, thereby reducing energy consumption while still providing adequate monitoring coverage
Solution Approach 2:
The monitoring frequency and intensity are dynamically adjusted based on process conditions, increasing measurement rates when peroxyacetic acid levels are critical and reducing them when levels are stable, optimizing energy usage
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 system enables precise monitoring and control of peroxyacetic acid concentrations in poultry chiller water, ensuring optimal antimicrobial efficacy and preventing sensor malfunctions by maintaining the pH within operational ranges, thus enhancing the sanitization process.
Implementation Method 1
A first pH sensing device for monitoring the pH of fluid in the mixing tank is also provided. The first pH sensing device generates a first signal responsive to the pH of the fluid in the mixing tank
Implementation Method 2
a first PAA sensing device for sensing the concentration of peroxyacetic acid in fluid flowing in the sixth line
Implementation Method 3
a first flow meter for sensing fluid flow through the first line; a second flow meter for sensing fluid flow through the second line
Data Source
AI summary
A chiller water sampling device includes a pair of flow meters and a proportional valve to provide a constant flow rate of sample water containing peroxyacetic acid from a chiller to a mixing tank. Acid can be added to reduce the pH of sample water in the mixing tank to bring the pH within the operating range of a peroxyacetic acid sensor. The sensed level of peroxyacetic acid can be used to control further addition of peroxyacetic acid to the chiller.