Principle and Process of TCU Temperature Control Unit

The TCU temperature control unit is different from the refrigeration and heating temperature control systems. The temperature control process is the process of controlling the temperature of the reactor materials. The principle is relatively simple. TCU adopts the method of changing the control set value to react as quickly as possible to the system lag in the process and obtain a small system overshoot. TCU control consists of two sets of PID control loops, called the master loop and the slave loop. The control output of the master loop is used as the set value of the slave loop.

TCU temperature control uses feedforward PV and the PID operation result output of the master control loop, and combines the feedforward PV signal as the set value of the slave control loop. TCU controls the temperature gradient in this way to ensure the accuracy of system temperature control. The specially designed lag predictor of TCU generates a dynamic signal yc(t) instead of the process variable y(t) as a feedback signal. Generate an e(t) signal to the controller, allowing the controller to predict the control effect without large lag, so that the controller can always generate appropriate control signals. That is, even with a large hysteresis, this dynamic signal yc(t) can keep the feedback loop working properly. However, if a universal PID is used to control a process with significant time lag, the controller output cannot be obtained correctly within that lag time. The feedback signal continues to increase, causing a large overshoot in the TCU system response, and even causing the system to lose control.

TCU temperature control adopts three-point sampling (material temperature point, temperature control system outlet temperature, temperature control system inlet temperature), combined with self-built model-free self-building tree algorithm and universal anti-lag cascade algorithm. When choosing a TCU, you can choose the corresponding types of conventional, isolation explosion-proof, and positive pressure explosion-proof TCU according to your own requirements.

We provide complete temperature control systems design and manufacturing. From standard models to complete customized products. We specialize in customer service and are dedicated to helping each customer have the optimal temperature control system for their specific need.

We provide non-standard customized solutions. Both single cooling chillers and cooling & heating combo units are available.

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Cooling and Heating Systems (SUNDI series)

(Custom Designs)

• Temperature range: -120℃ ~ +350℃
• High-precision, intelligent temperature control
• Cooling capacity: 0.5kW ~ 1200kW
• Fully closed system to extend the service life of thermal fluid
• Each device is load tested for more than 12 hours

Cooling and Heating Systems (WTD series)

(Custom Designs)

• （Micro channel / tube reactors specialized）
• Temperature range: -70℃ ~ +300℃
• High-performance circulation pump, more stable temperature control effect
• Wide temperature range to meet the needs of more industries
• Each device is load tested for more than 12 hours

Cooling and Heating Circulators

(Custom Designs)

• Temperature range: -45℃ ~ +250℃
• Emerson Copeland compressor, reliable quality
• Self-diagnosis function, multiple safety protection devices
• Fully closed system to extend the service life of thermal fluid
• Each device is load tested for more than 12 hours

Heating Circulators

(Custom Designs)

• Temperature range: +50℃ ~ +300℃
• Large heat exchange area and fast heating speed
• Self-diagnosis function, multiple safety protection devices
• Closed circulation system, no oil mist at high temperatures
• Each device is load tested for more than 12 hours

TES Series (Temperature control for fuel and oil testing)

(Custom Designs)

• Temperature range: -85℃ ~ +250℃
• Siemens PLC controller and other brand accessories
• Self-diagnosis function, multiple safety protection devices
• Fully closed circulation system, no oil mist at high temperatures
• Each device is load tested for more than 12 hours

TCU Multi-reactors Temperature Control System

(Custom Designs)

• Temperature range: -120℃ ~ +250℃
• Sealed, repeatable temperature control
• Built-in electric heating thermal oil auxiliary system
• Add cold and heat source heat exchange modules according to needs
• Each device is load tested for more than 12 hours

Cooling Chillers                                                                                                     

Recirculating Chillers / Refrigerated Circulator

(Custom Designs)

The chiller can be widely used in various industries and laboratories, and supports customized design.

Mini Chillers / Small Chillers

(Custom Designs)

The chiller can be widely used in various industries and laboratories, and supports customized design.

Low Temperature Chillers

(Custom Designs)

We specialize in the production of low-temperature chillers with a temperature control range as low as -150°C, which can meet the refrigeration needs of different industries.

High Temperature Chillers

(Custom Designs)

The chiller can be widely used in various industries and laboratories, and supports customized design.