Wuxi Guanya Refrigeration Technology co., ltd
Ultra-low Temperature Chiller

Ultra-low Temperature Chiller

  • Ultra-low Temperature Chiller
  • Ultra-Low Temp. Water-Cooled Chiller-1.JPG
  • Ultra-Low Temp. Water-Cooled Chiller-2.JPG
  • Ultra-Low Temp. Water-Cooled Chiller-3.JPG
Ultra-low Temperature Chiller

  • Product Description
  • System Introduce
  • Knowledge Center

Operating Principle

LNEYA adopts the world famous brand compressor, which can extend the service life of -10°Cto 200°Cdegree industrial chiller, enhance the refrigeration effect, reduce the energy consumption and noise of -10°Cto 200°Cindustrial chiller.

Technical Parameters:

Model LN-6W LN-10W LN-15W LN-20W LN-30W LN-40W LN-60W LN-90W LN-120W LN-180W
Temperature Range -60°C~ -10°C
Cooling Capacity
At -40°C
12kw 20kw 30kw 40kw 60kw 80kw 120kw 180kw 240kw 360kw
10320Kcal/h 17200Kcal/h 25800Kcal/h 34400Kcal/h 51600Kcal/h 68800Kcal/h 103200Kcal/h 154800Kcal/h 206400Kcal/h 309600Kcal/h
Cooling Capacity
At -55°C
6kw 10kw 15kw 20kw 30kw 40kw 60kw 90kw 120kw 180kw
5160Kcal/h 8600Kcal/h 12900Kcal/h 17200Kcal/h 25800Kcal/h 344000Kcal/h 51600Kcal/h 77400Kcal/h 103200Kcal/h 154800Kcal/h
Circulation Pump Info 6.6m³/h 9m³/h 15m³/h 15m³/h 25m³/h 25m³/h 25m³/h 35m³/h 35m³/h 50m³/h
2.5bar max 2.5bar max 2.5bar max 2.5bar max 2.5bar max 2.5bar max 2.5bar max 2.5bar max 2.5bar max 2.5bar max
Inlet&outlet connection size DN-25
Cooling Water at 30 degree 10m³/h 14m³/h 20m³/h 25m³/h 30m³/h 35m³/h 50m³/h 70m³/h 90m³/h 120m³/h
Cold Storage tank (optional) 200L 350L 500L 750L 1000L 1200L 1500L 2200L 3000L 4000L
Expansion tank(standard) 100L 175L 250L 350L 500L 600L 750L 1000L 1350L 1800L
Compressor Dorin semi-closed compressor Dorin compressor/HANBELL、Fusheng、Bitzer screw compressor
Operation Panel 7-inch color touch screen display, temperature curve record
Control System SIEMENS S7 PLC&Module,Set temperature difference of refrigeration on & off
Closed Circulation System The whole system is a 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 supplement oil automatically at low temperature
Circulation Pump LNEYA Mangetic Pump/German Brand Mangetic Pump
Evaporator Danfoss/KAORI plate heat exchanger
Condenser Casing type water-cooled condenser / tube-type water-cooled condenser
Intermediate heat exchanger Danfoss/KAORI plate heat exchanger
Refrigeration accessory Oil separators, drying filters, expansion valves, refrigeration solenoid valves, pressure control, mirrors, etc. all use Emerson / Danfoss and other brands
Electric AC contactors, intermediate relays, circuit breakers, thermal relays, etc. are Schneider / ABB brand
Refrigerant R404A/R23 mixture,optional: R125/R23 mixture
Secondary refrigerant No corrosive liquid, ethanol water, heat transfer oil etc.
Safety Protection High pressure protect; water supply cut-off protection; over-current protection; leakage protection; sequential and phase failure protection; High temperature protection; Sensor Failure protection; Liquid low level protection etc. multi-safety protection
Level Indicator Adopt glass liquid level indication
Piping material Expansion tank, cold storage tank and circulation pipeline are all made of SUS304
Case material Channel steel + square tube + cold rolled plate        sealing plate spray 7035
Dimension cm 100*150*185 205*145*205 205*145*205 205*145*175 245*145*205 300*160*225 350*160*205 400*160*225 500*200*225 650*200*225
Power 14kW 18kW 26kW 35kW 52kW 69kW 104kW 152kW 200kW 300kW
dB within 75dB within 80 dB within 90 dB
Weight (kg) 850 1000 1200 1450 2000 2400 3000 3600 4200 5600
Optional Optional outside touch screen display controller (separated), the communication line distance is 10 meter
Optional Optional explosion-proof touch screen control system (ExdeIIBT4), the communication line distance is 15 meter

Ultra-low temperature chiller

Ultra-low Temperature Chiller Practical Application

Ultra-low temperature chiller practical application
We know that the low temperature chillers are complicated equipment. Even the switch process, if not according to the standard of operation or with no special maintenance, will inevitably lead to a decline in the refrigeration efficiency of the low temperature chillers and will greatly reduce the service life of the them. Here, we will talk about major attention matters when enterprises use low temperature chillers!

1. Refrigerant leakage

Refrigerant leakage will not only affect the refrigeration efficiency of low temperature chillers, but also affect the health of people in and out of the engine room, so the issue of refrigerant leakage must be noted.

2. Pay attention to the load of the low temperature chillers

The large load of low temperature chillers, or overload phenomenon which is more than the rated load, will bring about serious problems including refrigeration efficiency decline, bigger noise,  bigger vibration amplitude, excessive consumption of resources, decline in service life and so on which need to pay attention to!

3. Temperature and pressure

It can be said that the parameters related to temperature and pressure are the most important parameters of low temperature chillers. Enterprises should pay attention to the parameters related to the temperature and pressure of the low temperature chillers, and solve them in time, so as to avoid affecting the normal operation of the low temperature chillers.

Paying attention to the points mentioned above has extraordinary importance for extending the service life of low temperature chillers ,and improving the refrigeration efficiency and the use safety of low temperature chillers.
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