Episode 356. Understanding PID Controllers in Refrigeration Systems
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Episode 356. Understanding PID Controllers in Refrigeration Systems
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In this episode, we explain PID (Proportional-Integral-Derivative) controllers used in refrigeration systems. This will give refrigeration technicians a pragmatic understanding of PID tuning, plus a procedural checklist before making any adjustments, and lots of tips on how to optimize refrigeration system performance through proper PID tuning.
In this episode, we cover:
-PID controllers and their importance in refrigeration
-Explanation of Proportional-Integral-Derivative components
-Manufacturer settings
-Tips for fine-tuning electronic expansion valves (EEVs)
-Sensor placement
-Stable suction pressure
-PID adjustment checklist
-Steps for tuning PID settings
-Common issues caused by improper PID tuning
-Performance indicators for well-tuned systems
Helpful Links & Resources:
Episode 344. Basics of CO2 Controls - Service Calls & Troubleshooting Rack Controllers with Kevin Mullis (Part 4 of 4)
Episode 279. CO2 Experts: Superheat - Controls & Common Issues with Chris Griffiths and John Rothery
Episode 299. Basic Refrigeration 101