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Low Temperature Industrial Chillers (-30℃~-80℃)
(1).Ultra low temperature design
(2).Precise temperature control
(3).Custom cooling capacity / voltage
(4).Independent design & easy installation
(5).These fermented beverages include craft beer breweries, distilleries, wineries, cider, we can provide you with the right chiller according to your requirement on cooling capacity.
Description
Technical Parameters
Detail Images

Key Industries & Applications

✔ Chemical & Petrochemical

Low-temperature reactions & catalyst testing

LNG cooling & gas liquefaction processes
✔ Pharmaceutical & Biotechnology

Lyophilization (freeze-drying) systems

Vaccine storage & cryopreservation

Laboratory reactor cooling
✔ Advanced Materials & Electronics

Semiconductor manufacturing

Superconductor testing

Battery cell thermal cycling
✔ Food Processing & Specialty Manufacturing

Deep-freeze crystallization

Specialty chemical synthesis

Aerospace component testing

Core Advantages

1. Extreme Temperature Precision

Patented cascade refrigeration technology ensures ±0.5℃ stability even at -80℃

Adaptive PID control for dynamic load conditions

2. Energy-Efficient Design

Eco-friendly R23 refrigerants with low GWP

Variable frequency compressors reduce energy consumption by up to 35%

3. Industrial-Grade Reliability

Corrosion-resistant stainless steel evaporators

Dual-circuit redundancy for 24/7 operation

IP55 protection rating for harsh environments

4. Smart Monitoring & Connectivity

IoT-enabled remote diagnostics via HMI touchscreen

MODBUS/Profibus integration for Industry 4.0 compatibility

Technical Specifications

Parameter

Specification

Temperature Range

-30℃ to -80℃ (customizable)

Cooling Capacity

30kW ~ 1500kW

Flow Rate

20 L/min ~ 5000 L/min

Pressure Range

3 bar ~ 15 bar

Compliance Standards

ASHRAE 15, CE, UL, ISO 514


Why Choose Our Ultra-Low Temp Chillers?

Proven Performance: 20+ years serving Fortune 500 manufacturers

Custom Solutions: Modular design adapts to your facility layout

Rapid ROI: Predictive maintenance reduces downtime by 40%

Global Support: 24/7 technical service with regioa warehouses

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Model

DK-60DL

DK-90DL

DK-120DL

DK-130DL

DK-150DL

DK-180DL

DK-200DL

DK-220DL

Cooling Cpacity

kW

58

89

126

169

212

250

326

380


Kcal/h

49886

76721

108545

145357

181997

214595

280221

327010

Input power

kW

52

86

115

152

184

222

295

312

High Temperature Part

Compressor Qty

1


Capacity Control

4 stage


Start Type

Y-▲


Power Supply

380VAC/3N/50Hz


Refrigerant

R22


Water flow

19

30

41

55

68

81

107

119


Condenser pressure drop

kPa

44

51

39

42

42

51

50

54


Condenser Pipe Dia

DN

80

80

100

125

125

150

150

150

Low Temperature Part

Compressor Qty

1


Capacity Control

3 stage

4 stage


Start Type

Y-▲


Power Supply

380VAC/3N/50Hz


Refrigerant

R23


Coolant

Anhydrous ethanol


Chilled Water Flow

12

37

52

69

87

103

134

156


Evaporator Pressure drop

kPa

81

79

80

77

79

75

82

80


Evaporator Pipe dia

DN

100

125

150

150

150

150

150

150

Dimension

Length

mm

3000

3050

3100

3100

3100

3450

3450

3450


Width

mm

1250

1350

1450

1450

1450

1550

1550

1550


Height

mm

1600

1650

1900

1900

1900

2000

2000

2000

Weight

Net.W

kg

1630

2200

2570

2670

2750

3540

3740

3820


Running W

kg

1830

2510

3970

3070

3140

4170

4350

4430

Note: 1. The above parameters are based on the nominal operating conditions of the unit: cooling water inlet and outlet water temperature 30/35℃; chilled water inlet and outlet water temperature -45℃/-50℃3. The dimensions may vary slightly depending on customer requirements


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Heat Exchanger 

(1). Adopt the internally and externally threaded reinforced tubes.


(2). The inside surface of the copper pipe is threaded, the outside surface of the copper pipe is smooth, so that can ensure the good heat exchange efficient.


(3). The evaporator design running with the latest CAD design technology, CNC production and processing, compact structure ,stable performance. And outside insulated with 25mm thick PE insulation, no condensation, less cooling loss.

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Semi-hermetic screw compressor


(1). All the DARKO WATER cooled screw chillers adopt world famous brand semi-hermetic screw and semi-hermetic reciprocating compressors, such as HANBELL, BITZER, REFCOM and etc.


(2). Twin-screw 5:6 gear ratio and advanced linear design, low energy consumption and eco-friendly; good performance, low noise.


(3). According to the cooling capacity need, adopt single compressor or twin compressors circuits system; The compressors can automatically run alternately according to the load change, and balance the running hours of each compressor, which greatly prolongs the chillers working life, and the trouble-free running can reach more than 45,000 hours.

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Control System


  1. DARKO has developed a highly intelligent PLC and PC-level computer control system, which can be used for remote monitoring and control. Simple operation, connect with power supply directly, with lower failure, and high safety factor, easy installation. User can set the parameter as real working need, intuitive and reliable; SIEMENS PLC is workable.

  2. Touch Type Panel

    SIEMENS Brand Control System; Touch Type LED Panel

  3. Electric Components

    Schneider Brand Electric Components

  4. Support 600V or Larger power supply according to local need.


The Water Cooled Chiller Auxiliary Parts Need

1. Chilled water pump: connect with user equipment ( or tank) to water cooled chiller evaporator, send the cold water to customer, bring out the heat from customer.

2. Cooling water pump: connect cooling tower with chiller.

3. Cooling tower: to cooling the chiller condenser.

4. Buffer water tank.

We will supply the complete set for you, please reference the diagram system as follows

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If you are looking for the most suitable Water Chiller, DARKO Chiller is the right choice.


Call our sales manager for further guidance on the models, sizes, and configurations, and place your order at a very reasonable price.

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Low temperature industrial chiller

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Low temp chiller for chemical industry


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