SUNDI -80℃~250℃

Product Description
System Introduce
Technical Parameter
Knowledge Center

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 shorter 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 the simple and easy operation.

Typical applications of refrigeration heating temperature control system:
Dynamic constant temperature control of cold and heat sources of high-pressure reactor, dynamic constant temperature control of cold and heat sources of double-layer glass reactor, dynamic constant temperature control of cold and heat sources of double-layer reactor and constant temperature control of cold and heat sources of microchannel reactor; Small constant temperature control system, temperature control of steam saturation system, material low-temperature and high-temperature aging test, combined chemical cold and heat source constant temperature control, semiconductor equipment cooling and heating, vacuum chamber refrigeration and heating constant temperature control.

Structure and principle of Dynamic Temperature Control System:

Ultra high temperature cooling technology can directly cool from a high temperature of 300℃[because only the heat transfer medium in the expansion chamber contacts with oxygen in the air (and the temperature of the expansion tank is between normal temperature and 60℃), which can reduce the risk of heat transfer medium being oxidized and absorbing water in the air. At high temperature, no heat conducting medium evaporates, and continuous temperature control of - 80℃ ~ 190℃, - 70℃ ~ 220℃, - 88℃ ~ 170℃, - 55℃ ~ 250℃ and - 30℃ ~ 300℃ can be realized without pressurization.

Model		SUNDI-825W	SUNDI-835W	SUNDI-855W	SUNDI-875W	SUNDI-8A10W	SUNDI-8A15W	SUNDI-8A25W	SUNDI-8A38W	SUNDI-8A60W	SUNDI-8A80W

Temp. range		-80℃～+250℃
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℃								±1℃
Material temp. accuracy		±1℃
Heating power kW		2.5	3.5	5.5	7.5	10	15	25	38	60	80
Cooling capacity kW at	250℃	2.5	3.5	5.5	7.5	10	15	25	38	60	80
	250℃	2.5	3.5	5.5	7.5	10	15	25	38	60	80
	0℃	2.5	3.5	5.5	7.5	10	15	25	38	60	80
	-40℃	1.8	2.6	3.3	5.8	6.4	11	20	31	48	65
	-60℃	1	1.4	1.6	3	3.5	5.8	10	16	23	32
	-75℃	0.3	0.42	0.7	1.3	1.5	2.4	5	8	11	16
Circulation pump max L/min bar		20	35	50	50	110	110	150	200	400	400
		2	2	2	2	2.5	2.5	2.5	2.5	2.5	2.5
Pump		LNEYA magnetic drive pump							German magnetic drive pump
Compressor		Tecumseh closed compressor				Dorin semi-closed compressor
Expansion valve		Emerson thermal expansion valve/Emerson electronic 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/R23/R14 mixture，optional: R125/R23/R14 mixture
Connection size		G1/2	G3/4	G3/4	G1	G1	G1	DN32 PN10	DN40 PN10	DN50 PN10	DN50 PN10
Water-cooled type W(@20℃)		900L/H	1200L/H	1800L/H	2300L/H	3200L/H	4500L/H	8m³/H	12m³/H	20m³/H	30m³/H

Dimension cm		55 68 145	55 68 145	55 95 170	55 95 170	70 100 175	100 95 185	150 100 185	205 145 205	245 145 225	300 160 225
Weight kg		240	285	345	500	600	950	1300	1550	2200	2850
Power 380V 50HZ		6.5kW	10kW	13kW	19kW	25kW	37kW	50kW	71kW	110kW	150kW

Process Control Principle:
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 controlloops: the main circuit and from the circuit. the main control loopfrom the loop output as the setting.
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 temperaturegradient to ensure the accuracy of temperature control system.

Displays Various Information：

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 temp. control ( materials temp. control pattern, heat conducting medium temp. control ).
7. The temp. upper limit, lower limit control can be set.
8. The temp. 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 manuallyor automatically.

Comparison between LNEYA SUNDI series and other systems on thermodynamic properties
	LNEYA Dynamic temperature control system SUNDI series	General cooling circulator,heating oil furnace
Whether it is closed system	Use patent closed liquid circulation system and expansion system, regardless of high or low temperature, the heat transfer oil inside the expansion tank will keep room temperature, So it can be used in a wide temperature range. You can safely use it if the boiling point of the heat conduction oil is within 10℃.	Generally open systems. The heat transfer oil will react with oxygen in the air at high temp. and turn brown even becomes deeper and darker in a short time with terrible smell. Because of open system at low temp., it can reach the target temp. for a few times, but accompanied by absorbing the moisture in the air, its viscosity will keep increasing and can't drop to the target temperature.
Whether it is closed system	At low temperature, the heat conduction medium won't contact with or absorb the moisture in the air, this closed system can improve the stability of the cryogenic system.	There may be some closed loop systems, in the process of running, some medium inside the expansion tank will recycle, the above problems will appear.
Whether the high-level heat transfersystem	The system adopts pipeline heating and cooling. There is lttle liquid participated in circulating. Plate heat exchanger is used in refrigeration, and pipeline flange heater is used in heating, the whole system volume is (The volume of plating heat exchange + The volume of pipeline heater+ The volume of circulating pump + The volume of circulation loop）	With open system, the same 10 kW heating or cooling ability, it can concert with 100L trough. This system loading is 100L + 25L jacket reactor + 100L material. The relative efficiency is much lower.
	Such as to control a 100L reactor, choose model SUNDI-5A10W; heating power 10kW; cooling capacity 10kW;temperature -5℃.	They tend to use relatively small circulation pump, the heat transfer on reactor is even less.
	The volume of the whole system participated in the circulation is only 5.5L. Comparing with the 100L of reactor jacket + material, the 5.5L internal system volume is very small.	Some closed system: Because some liquid in expansion tank involved in circulation, the medium will be added. There is no heat preservation in expansion system, increase the heat dissipation and reduce the thermal efficiency.
	The 10kW heater is almost all used on reactor.
	Use big flow circulation pump, heat transfer relies on circulation pump to transfer the liquid regardless of how large the outside storage tank is.
whether there has valve incirculatorysystem	The entire circulatory system without mechanical or electronic valve. This can avoid the broken of valve at high or low temp. for long time.	Use high and low temperature precooling control, system with mechanical or solenoid valve. Any mechanical or electronic valve will be broken easily after long time cold and hot shock. And a small amount of impurity in the system will cause valve broken.(we cannot avoid a small amount of impurity into the circulatory system in production and operation process)
Ultra high temperature cooling technology	Use ultra high temperature cooling technology, the system can directly start the compressor at max 300℃.	The general refrigeration cycle trough can't be cooled at high temperature or cool high temperature heat conduction medium to room temperature by circulation fan (this is often exchanged through the valve). After 2 ~ 3 months, the valve can't be tightly shut and cold energy loss is serious, the temperature can't drop down.
Ultra high temperature cooling technology	This system can easily take away heat when exothermic reaction taken place under high temperature. The unique temperature control system can always keep the system temperature maintain at moderate reactor's temperature. p Look at the control effect	Exothermic reaction at high temperature will often need people to pipe in low temperature liquid. Temperature control problems will take place easily for careless operation. Too much of the cryogenic liquid will lower the temperature of reaction system too much, which can't reach the reaction temperature. What's worse, the reaction kettle may be broken
Temp.control system	The method of changing the control settings can response to the system delays as soon as possible, and gets the smallest system overshoot. The system consists of two PID (PID is changeable in each group) control loop structures. We call these two sets control loops the main circuit and from the circuit, the output of the Main loop as the set point of from loop. p The system with feed-forward PV, the master PID loop operation results of the PV output and feed-forward signals as the composite of the settings from the control loop. Through such control of the temperature gradient.	For example, reaction material reacts at 100℃.
	To ensure the accuracy of temperature control.	Operators firstly set the temperature of thermal oil at 1350C or higher, this process will continue for a period of time, then operators will set heat conduction medium temperature at 105C according to their experience, to control the reaction temperature to about 100C.
	The specially designed lag forecasts ( special dynamic control calculation) create a dynamic signal yc(t) to replace the process variable y(t) to serve as the feedback signal.	This process with large temperature range, so skilled and responsible operators will be needed. No complete temperature curve record of the whole process.
	It sends an e (t) signal to the controller, the controller will predict whether the control function has large time delays. So the controller can always produce appropriate control signals. That is to say, even if there may be large time delays, the dynamic signal yc (t) can make the feedback loop keep working.	If just set the temperature of heat conduction medium at 1Ó5"C, there will be long time before the reaction material temperature reach 100*C. (Because the temperature difference between the jacket and material is too small). ý How about using temperature measuring points to directly sample the temperature of the reaction material? What's theresult?
	By taking sample at three temp. points (material temp., outlet and input temp. of the temp. control system), our special dynamic control calculation combine with the common resistance lag cascade algorithm.	Use common PID or simple cascade algorithm to control the process with significant time delays, the output of controller will keep increasing without getting appropriate feedback signal within the delay time, this will lead to large system response overshoot and even make the system out of control.
	Look at the control effect	Chemical reaction is often unpredictable, the 50L reactor is fixed, but the volume of the reaction materials will be different each time, and the hot hot melting will be different too, it can't be co controlled by PID self-tuning.

	LNEYA Dynamic temperature control system SUNDI series	General cooling circulator,heating oil furnace
Repetitiv econtrol results	Based on advanced dynamic control system, each time it can achieve consistent control effect, it greatly improves the stability of the products. Look at the control effect	Because the operation with human intervention, It doesn't keep consistent in effect every time and influence the stability of produced products.
Control exothermic reaction	The material temperature is rising when testing of reactor. The system will rapid heat-up and cool-down temperature with good result to meet your demand.	Because jacketed reactor with large time delay. The heat conduction medium response time- delay, and the actual temperature is too high.
	Based on the algorithm, make the right choice to maintain moderate heat conduction oil temperature; take away the released heat and maintain reaction system at required temperature.	Can' t be better controlled without human intervention. This system needs experienced operators, or the system temperature will be too low or too high, greatly affect the stability of the products.
	Look at the control effect
Smaller amplification effect	Based on precise control of reactor temperature,lt can control the process temperature. This is most important in process control with protecting thermostatically controlled environment. Look at the control effect	With small dose of laboratory experiment and higher yield. It has problems if it will be blew up. Need to grope for temperature process curve. It is high cost. No good result in extreme condition.
Safety protection	It can control and set the temperature of outlet temperature and material temperature.	Conventional protection: high temperature protection, refrigeration system high and low pressure protection, compressor circulating pump overheating protection, the high cooling water temperature protection, phase sequence protection, leakage circuit breaker, sensor fault protection, liquid level protection
	Heating security protection, control protection, solid state relay power protection, independent temperaturelimiter.
	Conventional protection: high temperature protection, refrigeration system high and low pressure protection, compressor circulating pump overheating protection, the high cooling water temperature protection, phase sequence protection, leakage circuit breaker, sensor fault protection, liquid level protection
Circulating pump	With magnetic resistance to high temp. and low temp. circulation, without shaft seal, no leakage problems for using 2 to 3 -years.	With shaft seal circulating pump, there will be leakage problems after being used for a long time.
Program Editor	It can edit 25 programs, each program can edit 45 steps.	With program Without program
Heat Conduction Medium	Use colorless and tasteless heat conduct medium, wide temperature range ( Look at the heat-conducting medium parameter table), with LNEYA temperature control system and the service life of more than 6 years.	In the process of using the color change, terrible smell of transfer fluid for a period of time. Firstly, the heat conduction medium itself has problems. Secondly, the system design has problems, lead to the oxidation of heat conduction oil at high temperature.
Display	Use 7-inch or 10-inch color touch screen.	With instrument display
Data recording	Clearly records material temp.,setting temp., inlet and outlet temp. of heat conduction medium and alarm record of -system.	Without data record ,only display
Temp. curve	With real time temperature curve record, it can record temperature curve of 18 months.	Without
Temp. data export	With U disk derived data curve, it can select the export time.	Without
Configuration software	It can be easily configured. You can install and record the picture of display on the computer.	Without
Communication	Adopt good Modbus RTU communication protocols, can easily communicate with other equipment like DCS.	without or no special communication protocol, poorscalability
Testing	All dynamic temp. control systems with load testing of 24 hours. Confirm and record the whole process of load testingprocess.
Intellectualproperty	Wuxi Guanya Refrigeration Technology Co., Ltd, We have successfully applied for 10 patents in China.

How to deal with the malfunction of Industrial Water Chiller System

What's wrong with the Industrial Water Chiller System when it fails to cool down? Let Guanya explain it to you below.

One reason is that the initial use of liquid chiller system fails to reduce the temperature, or there is something wrong with the installation of water-cooled chiller, cooling water tower, circulating water pump and pipe. It needs to be carefully checked according to the installation diagram.

The second reason may due to the pipes which are attached to various devices for a long time, and the impurities have accumulated in the water sources, resulting in smaller water flow. Therefore, we must clean the pipes between the devices.

Thirdly, If this problem occurs during the first use, it may cause by the wrong matching of the chiller and the problem of delivery. Because the industrial chiller has carried out 100% performance tests before getting out of the machine to ensure the normal operation of the machine unit.

Finally, If this is the case of a chiller that has been used for half a year or 1-2 years later, it may due to the leakage of Freon in the cooling system of the cold water machine. It is suggested to find out the leakage, weld it again and refrigerant. The heat exchanger of the water-cooled chiller is dirty and needs washing, and remember to clean it regularly after subsequent use.

The operation of any Industrial Water Chiller System is inseparable from the participation of refrigerant. So the shortage of refrigerant will affect the normal operation of the industrial chiller, and then result in the reduction of refrigerating capacity of the industrial chiller and even shut down, which is also the main reason for the shrinkage of the refrigerating capacity of the industrial chiller.

SUNDI -80℃~250℃

SLJ -110℃～-150℃

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