Wuxi Guanya Refrigeration Technology co., ltd
SUNDI -45℃~300℃

SUNDI -45℃~300℃

  • SUNDI -45℃~300℃
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SUNDI -45℃~300℃

  • Product Description
  • System Introduce
  • Technical Parameter
  • Knowledge Center



Temp. range -45℃~+300℃  (the system add pressure 3bar)
Control Mode Feedback PID + Our special dynamic control calculation, PLC controller
Temp. control Process temp. control and jacket temp. control model
Temp. difference Set or control the temperature difference between jacket oil and raw material process
Program Editor 10 programs, each program can edit 42 steps.
Communication Portocol MODBUS RTU Protocol,RS485 interface
Material temp. feedback PT100 OR 4~20mA or communication(normal: PT100)
Temp. feedback The temp. of three points: the inlet and outlet of equipment,  reactor material temp.(external temp. sensor)
Medium temp. acccuracy ±0.5℃
Material temp. accuracy ±1℃
Heating power 5.5 7.5 10 15 25
kW at
250℃ 5.5 7.5 10 15 25
100℃ 5.5 7.5 10 15 25
20℃ 5.5 7.5 10 15 25
0℃ 5 7 10 15 25
-20℃ 2.9 4.2 6 11 16
-40℃ 0.9 1.5 2 3.8 4.7
Circulation pump max
L/min bar
50 50 110 110 150
2 2 2.5 2.5 2.5
Pump LNEYA magnetic drive pump
Compressor DANFOSS/ Emerson copeland vortex flexible
Expansion valve Emerson thermal expansion valve/danfoss thermal expansion valve.
Evaporator DANFOSS/KAORI Plate heat exchanger
Operation Panel 7-inch touch screen,show temp curve\EXCEL data output
Safety protection Self-diagnosis function; freezer overload protection; high pressure switch, overload relay,thermal protection device, liquid low level protection, high temperature protection and temperature fault protection.
Closed circulation system The whole system is full closed circulation, there is no oil mist at high temperature and no water vapor at low temperature, pressure do not rise up when system is running. The system will supply oil automatically at low temperature.
Refrigerant R404A/R507C, optional: R448A
Connection size G3/4 G1 G1 G1 DN32 PN10
Water-cooled type
Dimension mm 450*850*1300 450*850*1300 550*950*1700 700*1000*1750 800*1200*1850
Isolate size mm 450*1100*1300 550*1200*1700 550*1200*1700 550*1200*1700 1050*1200*1850
Positive pressure mm 1100*950*1950 1100*950*1950 1100*950*1950 1350*1450*1950 (1350+600) *1450*2250
Weight kg 245 285 320 360 420
Power 380V 50HZ 9.5kW max 12kW max 17kW max 24kW max 38kW max

Typical application of refrigeration heating temperature control system.

Dynamic thermostatic control of cold and heat source of high pressure reaction kettle, dynamic thermostatic control of double layer glass reaction kettle, and dynamic thermostatic control of cold and hot source of double-layer reactor.

Microchannel reactor thermostatic control, small temperature control system, steam - feeding system temperature control, material low temperature aging test.
The thermostatic control of the combined chemical cold source heat source, the cooling heating of the semiconductor equipment and the heating temperature of the vacuum chamber are controlled.

Advantages and functions of temperature control system of refrigeration.

Temperature range from 120 to 350, performance superior, unique, high - precision, intelligent temperature control.
High cooling power from 0.5 to 1200kW, highest production stability and repeatable results.
Multi-function alarm system and safety function, use plate heat exchanger, tube type heater to increase heating and cooling rate.
7-inch and 10-inch color TFT touch screen graphics display, use magnetic drive pump, no re-seal leakage problem.
Full airtight system, extended thermal conductivity liquid life, very wide temperature range, no need to change liquid media.
Ultra-high temperature cooling technology can be cooled directly from 300 degrees of high temperature.
The principle and the function has many advantages to using staff: because only expansion of cavity in the body heat conduction medium contact with oxygen in the air (and expansion tank temperature at room temperature to 60 degrees), can achieve lower heat conduction medium absorbed by oxidation and the risk of air moisture.
No heat conduction medium evaporates at high temperature, and it can be achieved -80 ~ 190 degrees, -70 ~ 220 degrees, -88 ~ 170 degrees, -55 ~ 250 degrees, -30 ~ 300 degree continuous temperature control without pressurization.

Adopt full closed pipe design, adopt high efficiency plate heat exchanger, reducing the demand for heat conduction liquid, improve the heat utilization rate of the system, reach the rapid lifting temperature.Thermal conductive medium in a closed system, with a container, expand the heat-conducting medium not participate in circulation in the container, whether high or low temperatures, expansion tank temperature to room temperature to 60 degrees, can reduce the heat conduction medium in running the risk of absorbing the moisture and volatile.

How to Determine Freezing Water Flow Rate?

A lot of people will ask such a question when they buy a cold water machine -- how do you determine the freezing water flow of a refrigerated water unit? So which aspects should we consider the cold water flow?

1. Water pressure test of the unit in and out of the water pipe.
Detect the pressure value of the in- and out-water, then refer to instruction about the water flow under this circumstance and determine whether the water system is normal by looking at the description in the corresponding table or flow diagram of the unit. This difference is also used to determine which part of the water pipeline has a large resistance and make corresponding rectification plan and action.

2. The air inlet temperature of the compressor should be tested only when the refrigeration operation is carried out.
If the temperature of the water chiller is tested lower than zero after running for 30 minutes, then water flow is not enough on water side heat exchanger which causes evaporation temperature and pressure to fall and cause freon in evaporator flow to the compressor suction duct in evaporation heat. That brings about the fact that the compressor suction temperature below zero. In addition, the evaporation pressure and evaporation temperature caused by low temperature setting should be excluded. However, the low-temperature unit can be considered normal as long as there is 6 ~ 8 ℃ overheat of compressor suction. So under normal water flow, the compressor suction temperature generally will be greater than 0 ℃. Temperature lower than this value should be ruled out water system problems.

3. The current needs to be tested when the pump runs.
By detecting the current of the pump of water chiller and comparing with rated current, you can determine the actual water flow, whether its water flow is big or small. Refer to the parameters above, you can draw an exact water system testing analysis report.
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