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Closed Loop Chillers

LT -80℃~-40℃

Cooling capacity 0.4kW~2.5kW
Circulation Pump
Flow MAX 30L/min 1.6bar
Temperature accuracy ±0.5℃
Power AC220V / AC380V/ AC460V

Our closed loop chillers are available in air-cooled and water-cooled models. In colder climates, the liquid chillers can be configured to bypass the compressor completely and cool the glycol directly on the process side, saving up to 90% of compressor energy! Widely used in many fields such as medical, industrial, laboratory, semiconductor, etc.

LT series

-80°C

lowest

40°C

Highest

±0.5°C

Temperature control accuracy


Model LT8-1.5       LT8-1.5W

LT8-2       

LT8-2W

LT8-3       

LT8-3W

LT8-5       

LT8-5W

Temperature range -75℃~-40℃ -80℃~-40℃
Temp control accuracy ±0.5℃
Cooling capacity  -60℃ 0.7kw 1kw 1.4kw 2.5kw
-70℃ 0.4kw 0.6kw 0.85kw 1.5kw
Circulation Pump
Flow MAX
30L/min 1.6bar 30L/min 1.6bar 30L/min 1.6bar 30L/min 1.6bar
Refrigerant R-404A/R23
Power AC220V / AC380V/ AC460V
Temperature feedback

Temperature feedback PT100 (inlet temperature, outlet temperature)


Compressor

Highly, Mitsubishi, Panasonic and other compressors


Communication protocol

MODBUS RTU protocol RS485 interface



LNEYA never disappoints users!

Advantages of Closed Loop Chillers

LNEYA never disappoints users!

Application of precision chillers

Circulation chillers play a vital role in process cooling, ensuring that machinery is functioning properly and maintaining optimal operation.

Laboratory

Including cooling of analytical instruments, lasers and other equipment that requires precise temperature control.

Pharmaceuticals

chillers machine

circulation pump flow 30L/min 1.6bar~50L/min 2bar

cooling circulators

circulation pump flow 30L/min  1.6bar

temperature accuracy ±0.5℃

precision chillers

circulation pump flow 30L/min  1.6bar

temperature accuracy ±0.5℃

refrigerated circulators

circulation pump flow 30L/min  1.6bar

temperature accuracy ±0.5℃

closed loop chillers

circulation pump flow 30L/min  1.6bar

temperature accuracy ±0.5℃

LT-800 -18~30℃

circulation pump flow 10L/min  0.6bar

You can VISIT our CLOSED LOOP CHILLER factory

If you have any needs, contact LNEYA engineers, we will provide you with one-stop service!

Do you have some problems in some links of your production system? Is the equipment temperature too high? Is the temperature control not precise enough? Is the defective rate of the produced products too high due to improper temperature control? Or is the cost of self-developed temperature control too high?


If you have the above temperature control problems (not limited to the above temperature control problems), please contact LNEYA engineers! We are very professional! We have more than 80 invention patents and various certifications, and the industry-leading refrigeration technology and temperature rise and fall technology have customized more than 2,000 Closed Loop Chillers for partners to solve problems.
If you have any needs, contact LNEYA engineers, we will provide you with one-stop service!

Global service

Served more than 30,000 customers.
Exported to more than 20 countries.

Certification patents

Has obtained CE certification, SGS certification, ISO certification.

After-sales service

Provide comprehensive technical training.
With 24/7 solutions.

Professional team

Founded in 2010, with 15 years of industry experience.
20% of employees are technicians.

Quality control

Visual inspection.
Performance test.
Electrical safety test.

Refrigerated Circulators are frequently used in industry. Circulating coolers are required for the heating parts of various equipment, so the operating efficiency is very important.
Therefore, we need to perform maintenance from the following aspects:
Cooling water and water pipes
During the operation of the circulating chiller, it is necessary to frequently check whether the cooling water pipe connection is safe and firm, and whether the flow, temperature and pressure of the cooling water are appropriate, so as to avoid excessive or insufficient water flow and affect the cooling effect of the circulating chiller.
Circulating water level and quantity
Operators also need to set a time to check the circulating water position of the water tank on a specific date each year to avoid the water level dropping without knowing it, resulting in insufficient circulating water supply, so it is necessary to check and replenish the circulating water regularly.
Water quality
During the use of the circulating chiller, in order to prevent the growth of microorganisms and other substances in the circulating water, which will affect the cooling effect of the circulating chiller, it is necessary to pay attention to the water quality problem. It is recommended to check the water quality problem regularly and replace the water quality at least once a year.
Regular cleaning
The compressor air-cooling filter and cooling fan blades in the circulating chiller should be cleaned regularly. It is recommended to clean them every 6 months. After cleaning, 1 to 2 drops of lubricating oil should be added to the fan bearing of the circulating chiller.
In order to reduce the impact of scale on the flow and cooling capacity of the circulating chiller, the pipeline should be cleaned every 5 years (every 2 years if tap water is used for cooling) to reduce the generation of scale in the pipeline.

A closed loop water system is a chiller that uses water as a heat transfer medium. The closed loop chilled water system design is more energy efficient and environmentally friendly than other types of chillers.
There are three basic types of chillers:
Open loop chillers
Open loop chillers use a cooling tower to transfer heat from the refrigeration loop to the atmosphere.
Mixed flow chillers
Mixed flow chillers are a combination of open and closed loop systems, using both air and water for heat transfer.
Closed loop chillers
Closed loop water chiller systems are generally more energy efficient and environmentally friendly than other types of chillers because they use only water as a heat transfer medium.
The system prevents the coolant from coming into direct contact with anything other than the chiller system itself and the air. This is the key difference between closed loop chillers and open loop chillers.

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