SUNDI-775 Refrigeration Units temperature range from -70 UP TO 250 DEGREE

Typical Applications

Reactor Systems Autoclaves
Pilot Systems
Mini Plant Systems
Scale up for Operational Development
Double wall reactors
Advanced-Flow Reactors
Distillation Systems
Material Testing
Combinational Chemistry
Semiconductor Industry
Vacuum Chambers

Advantages & Functions

Working temperatures from -100℃ to +350℃
Previously unachievable performa

Intelligent temperature control
Maximum process stability and reproducibility
Adop plate heat exchager,Pipeline heating,

the fastest heating and cooling rates.
High cooling power

Large temperature range without fluid change
Closed system,extend thermal fluid lifetime
Incredibly compact
7-inch,10-inch color TFT touch screen display
Comprehensive warning and safety functions
Rapid cooling down from high temperature

Use magnetic drive pump,solve the circulation pump leakage

Structure design

A fully closed piping design, high efficiency plate heat exchanger used to reduce the

demand for the thermal fluid utilization while providing the system to achieve the rapid

ups and downs in temperature The whole system is a closed liquid circulation system

with the expansion of container, expansion of the container and the liquid circulation is

adiabatic, and do not participate in liquid circulation, only mechanical connection,

no matter the temperature is a high temperature or low temperature, the tank

temperature is limited to 60℃. Therefore, during the process the risk of imbibing

and volatilization of the heat conducting medium is reduced. There following

advantages

for the user.

 Only the heat conduction medium in the expansion container touches the oxygen

 in the air. (The container temperature is limited to 60℃).

 No volatilization of the heat conducting medium at high temperature.

 No need to change the heat conducting medium. Continuous control of the temperature 

 of the below range can be done without rising the pressure: -80℃~190℃, -70℃~220℃,

 -88℃~170℃, -55℃~250℃, -30℃~300℃.

Display funcation

 The Refrigeration system displays various information on the touch screen.

1. Displays all the kind of process control temperatures.

2. Shows the liquid level of the heat conducting medium in the expansion vessel.

3. Shows indication for refrigeration system working.

4. Shows indication for heater working.

5. Shows indication for circulation pump working.

6. Displays the temperature control (materials temperature control pattern, heat

conducting medium temperature control ).

7. The temperature upper limit, lower limit control can be set.

8. The temperature difference between jacket & reactor material can be set.

9. Shows the alarm to add the liquid when it is empty.

10. The refrigeration compressor can be set to operate manually or automatically.

11. Simple Menu to use. 

Process Control Schematic diagram

Change the control settings of the method, the response as soon as possible in the 

process of the system lags behind, be the smallest system overshoot. Controlled by 

two PID (PID is a variable in each group) control loop structure, known as the two 

sets of control loops: the main circuit and from the circuit, the main control loop from 

the loop output as the settings. 

System with feedforward with PV, the master PID loop operation results of the PV 

output and feedforward signals as the composite of the settings from the control loop, 

through such control of the temperature gradient to ensure the accuracy of temperature 

control system.

High repetative of tempeature control effect 

Each cycle curve slope is consistent and greatly improve the consistency of production thermostatically control environment.

Circulation Pump

High temperature resistant low temperature magnetic drive pump or a leak-free high

and low temperature shield-driven pump, reduce the risk of system leakage. At the

same time the system has the advantages of low noise and big traffic flow.

Connecting Pipe

LNEYA Dynamic Temperature Control systems in practice

In comparison to other thermal control systems, Dynamic Temperature Control systems

differ sometimes considerably in their thermodynamic characteristics. In practice Dynamic Temperature Control systems offer definite advantages in your work: noticeably shorther heating and cooling times, better stability and reproducibility through the entire process

chain, greater safety for expensive glass reactors and the contained substances, together

with simple and easy operation.

Heat Conduction Medium

It is important to choose the suitable heat conduction medium, to make sure that

system works stably.To choose the suitable medium according to the working

temperature of the system is essential.

The package kinds of LNEYA heat conduction medium are 10L, 25L, 30L, 200L.

when ordering the heat conduction medium, the heat conduction medium for constant

temp       control system, channel, and external circulation equipments.

In 2006 Start production of refrigeration and heating system equipments.

In 2007 Developed the first generation of refrigeration and heating thermostat and establish the LNEYA CO., LTD.

In 2008 Developed the first generation of refrigeration and dynamic temperature control system.

In 2009 Developed the second generation of refrigeration and heating thermostat.

In 2010 Established WUXI GUANYA REFRIGERATION TECHNOLOGY CO., LTD.

Developed the second generation of refrigeration and heating dynamic temperature control system.

Developed the refrigeration and heating dynamic temperature control system & low temperature freezer for industry use. 

In 2011 Developed new technology with single compressor having multiple circulation systems (can reach to -80 degree with single compressor) 

Upgraded the second generation of refrigeration and heating dynamic temperature control system.

In 2012 Single compressor having multiple circulation systems is applied in production of SUNDI-4, SUNDI-5, SUNDI-6, and SUNDI-7, SUNDI-8 and LT series.

Upgraded the second generation of refrigeration and heating dynamic temperature control system for the second time and developing the third generation of refrigeration and heating dynamic temperature control system.

In 2013 Developed new product one operating multi refrigeration and heating temperature control system(the third generation of refrigeration and heating dynamic temperature control system).At the same time  testing the large capacity of ultra-low temperature freezer.

In 2014 Developed with large capacity of ultra-low temperature freezer which used for industrial production,new goods will be research.And it will be launched in the market soon........