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120 Ton 400KW Air Cooled Screw Chiller
  • 120 Ton 400KW Air Cooled Screw Chiller120 Ton 400KW Air Cooled Screw Chiller
  • 120 Ton 400KW Air Cooled Screw Chiller120 Ton 400KW Air Cooled Screw Chiller
  • 120 Ton 400KW Air Cooled Screw Chiller120 Ton 400KW Air Cooled Screw Chiller
  • 120 Ton 400KW Air Cooled Screw Chiller120 Ton 400KW Air Cooled Screw Chiller
  • 120 Ton 400KW Air Cooled Screw Chiller120 Ton 400KW Air Cooled Screw Chiller

120 Ton 400KW Air Cooled Screw Chiller

Tongwei is a China reliable and professional 120 Ton 400KW Air Cooled Screw Chiller, which can provide different kinds of chillers models to meet your requirement. 120 Ton air cooled screw chiller features with top-quality branded components such as air cooled condenser, hanbell /bitzer screw compressor, shell-and-tube type heat exchanger, PLC temperature controller. It no need to install a cooling tower, and easy installation&operation and maintenance. This Air cooled screw chiller can cool your application from 5℃ to 25 ℃. We look forward to becoming your long-term air cooled screw chiller supplier in China.

Chiller Model: TW-420ADH
Cooling Capacity: 420KW(361200kcal/h)
Refrigerant: R22/R407c/R134A
Power Supply: 380V/50HZ /3PH (Standard) / 208-480V/60HZ/3PH(Customized)
Compressor Brand: Hanbell/Bitzer Screw Compressor
Evaporator Type: Shell and Tube(Customized)

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Product Description

120 Ton/400KW Air Cooled Screw Chiller

High quality 120 Ton 400KW Air Cooled Screw Chiller is offered by China manufacturers Tongwei. Air Cooled Screw Chiller is also called air-cooled screw compressor chiller, a reliable cooling machine mediated to provide low noise and vibration-free cooling operation for large cooling capacity applications.It is equipped with a screw compressor and air-cooled condenser to dissipate system heat efficiently without demanding a chilled water supply,which absorbs heat from process water, and the heat is then transferred to the air around the chiller unit.

120 Ton Air-cooled screw chiller is also called air-cooled screw compressor chiller ,which equipped with two units semi-hermetic hanbell screw compressor usingR407c, R22, R134a, , and R404a are all available depending on the screw chiller working condition, application requirements, and ambient temperature.

120 Ton industrial air cooled screw chiller is suitable for die casting, rubber, printing, plastic injection molding, beverage production, metal polishing, the pharmaceutical industries and other other industries.

As a China professional chiller manufacturer and supplier ,we can provide a complete range of air-cooled screw chiller,  with cooling capacity from 80KW to 1000KW and the chiller temperature control range is from +25℃ to -30℃.

120 Ton 400KW Air Cooled Screw Chiller Machine Technical Specification MODEL:TW-420ADH



nominal cooling capacity





Chilled Water Temperature


Max power consumption



Full load



power source


3PH -380V - 50HZ (Standard)
3PH -220-480V - 60HZ (Customized)




Environmental friendly R407C

Charge Amount





 external balance of thermal expansion valve




Semi-hermetic screw

Start mode



Capacity control









Efficient air-cooled aluminum thread brass sleeve




 Dry shell and tube  

Frozen water



Water resistance








Low wind noise external rotor fan or aluminum axial fan







safety devices

Over load relay for compressor ,over-current protection,high and low pressure protection,over-temperature protection,traffic protection, three-phase error protection relay, coolant level switch, flow switch




Machinery weight



Run Weight



How Does An 120 Ton 400KW Air Cooled Screw Chiller Work?

120Ton Air Cooled Screw Chiller with Buffer Water Tank Outside Installation for Reference

Features of Air Cooled Screw Chiller

»Temperature control 7℃ to 25℃

»High quality branded Hanbell/Bizter screw compressor

»Shell and tube evaporator

»PLC Controller

»No need water cooling tower

»Easy installation&operation,low-maintenance cost

What Are The Main Components Of 120 Ton 400KW Air Cooled Screw Chiller

4.1 Compressor

The compressor is the key mover in Air Cooled screw Chiller because it produces pressure variations to stir the refrigerant around.

For 120 Ton chiller , which is with 2 units Hanbell Screw brand or Bizter Screw compressor for optional depends on the required refrigeration capacity, using R407C refrigerant,this brand compress is with high refrigeration efficiency,low noise ,energy saving,environmental protection and durability,safety and stability.

Each screw compressor with 4 steps of energy control 25%-50%-75%-100% to make sure the whole screw chiller is stable and guarantee high refrigeration performance.

Hanbell Screw Compressor

Bizter Screw Compressor

4.2 Evaporator

The evaporator is a crucial component of  stationary air cooled chiller, as it is responsible for extracting heat from the liquid being cooled,it is located between the compressor and the expansion valve. Stationary Air Cooled Chiller Uses highly efficient closed loop shell and tube type heat exchanger as the evaporator.

Shell and Tube Evaporator

4.3 Condenser

The condenser for air cooled screw chiller is equipped with efficient cross-seam fins and female threaded copper tubes for high heat exchange efficiency and good stability.Its function is to cool down the refrigerant steam released from the compressor into a liquid or gas-liquid mixture.

Aluminum fin+fan Condenser

4.4 Controller Panel

Tongwei chillers use Integrated PLC control system with human-computer interface and big LED touch screen panel.

PLC Controller Panel

How I can Choose the Right Air Cooled Screw Chiller?

There are four important chiller specifications you need consider when you choose a chiller for your application :the cooling capacity for chiller ,the voltage required for operation, the associated pump horsepower and flow rate (contact us for custom selection), refrigerant, and the evaporator type.

5.1 Calculate Right Cooling Capacity For Chiller

One of the most frequently ask about how we can know the cooling capacity for chillers.  We use KW ,Ton, But/h,Kcal/h to choose chiller cooling capacity :1 KW=860 kcal/h ;  1 TON=3.517 KW;  1 KW=3412 Btu/h;

There is also a formula to calculate the cooling capacity for chiller:.

Cooling Capacity(kw)= Flow Rate(m3/h)*Temp Change(T1-T2)/0.86

Heat Load= C(specific heat)* M(quality output per hour )*Temp Change(T1-T2)

Oversize the chiller by 20% Ideal Size in KW = KW x 1.2

Noted : T1:Incoming Water Temperature (℃)      T2:Required Chilled Water Temperature(℃)    


For example, what size of chiller is required to cool 10m³ water from 35°c to 15 °c in 1 hour?

Temperature Differential = 35℃-15℃=20℃

Water Flow Rate = 10 m³/hour

Cooling Capacity in KW = 10 x 20 ÷ 0.86 = 232 KW

Oversize the chiller = 232 x 1.2 = 278.4KW

278.4 kw cooling capacity for chiller is required.

5.2 Power

Different countries and regions have different standards for industrial electricity, the common power supplies are 208-230V, 380-420V,440-480V,50Hz or 60Hz, 3phase.

Such in Philippines ,the power supply is 220V 60HZ 3PH , 380V 60HZ 3PH ,460V 60HZ 3PH;

in Singapore and Malaysia ,the power supply is 415V 50HZ 3PH;

in Mexico ,the power supply is 220V 60HZ 3PH;

In USA ,the power supply is 208V 60HZ 3PH;575V 60HZ 3PH;480V 60HZ 3PH and so on

5.3 Refrigerant

R22, R407C, R404A, R134A are optional choices.

R22: good cooling effect, but R22 is considered a powerful greenhouse gas, so it’s forbidden in most countries.

R407C: a good replacement for R22, good cooling effect.

R404A: suitable for application that requires low temperature(below -10°c).

R134A: a non-flammable gas used primarily as a “high-temperature” refrigerant, suitable for air-cooled chiller working at a high ambient temperature above 50℃.

5.4 Evaporator Choose

Air cooled screw chiller generally uses one evaporators: just is shell and tube heat exchanger.Shell and tube type evaporator, which requires an additional water buffer tank to connect.

5.5 Buffer Water Tank Capacity Choose

Buffer tank’s capacity can be customized according to specific needs. It can buffer a larger heat load, store more chilled water .

304 Stainless Steel Water Tank 

Spare Part for Air Cooled Screw Chiller

What is the Difference Between Air Cooled Screw Chiller and an Water Cooled Screw Chiller

Air-cooled and water-cooled screw chillers are both types of chillers used for cooling applications in various industries.

The main difference between air cooled screw chiller and water cooled screw chiller is condenser :

The condenser of an Air-Cooled Screw Chiller is cooled by the ambient air,which the heat generated during the cooling process is dissipated into the surrounding air;

Water Cooled Screw Chiller with a shell and tube water-type condenser that is attached to a cooling tower and is typically used in medium and wide installations where water is available.So Water cooled screw chiller need connect with water cooling tower and water cooling pump outside , the installation is more trouble than air cooled screw chiller .

But if your ambient temperature is very high above 50℃,we suggest you use air cooled screw chiller ,as air cooled screw chiller may consume more energy to achieve the same cooling capacity due to the limitations of air as a heat exchange medium and water cooled screw chiller uses constant water source for more stable and efficient heat dissipation,so in high ambient temperature , water cooled screw chiller is more energy-efficient and better choice for your application .

Water Cooled Screw Chiller

Industrial Applications of Air Cooled Screw Chiller

Air-cooled screw chillers are very popular refrigeration system that can provide steady and reliable water cooling sources for both industrial and commercial usage.

Air cooled screw chillers are also widely used in plastic industry,food industry ,chemical industry and Cement/ Concrete Cooling.

8.1 Plastic Industry

Air-cooled screw chillers are also widely used in plastic processing and plastic industry including plastic injection molding, plastic extrude, and extrusion lines, blowing molding machines.

The function of using an air-cooled screw chiller is to provide the cooling water flow rate for cooling the plastic mold temperature down to make sure the product quality and production efficiency.

Air Cooled Screw Chiller For Plastic Industry  

8.2 Food Industry

Air cooled chillers are important in the food industry to maintain temperature control, preserve quality, support various production processes, and comply with regulations.

Air Cooled Screw Chiller For Food Industry

8.3 Chemical Industry

The pharmaceutical industry prepares medicines by processing through different heating and cooling parameters as blending, extrusion, mixing,air cooled screw chiller are cooling machines providing low-temperature cooling water, reduce the temperature of the chemical machinery and pharmaceutical cooling processing.

Air Cooled Screw Chiller For Chemical industry

8.4 Cement /Concrete Cooling

Cement production involves a series of chemical reactions that generate significant amounts of heat.Cement is usually mixed with water to from the material known as concrete whose temperature is to a great extent determined by the water used in the chemical combination of cement aggregates and water.

Shipping Way of Air Cooled Screw Chiller

As a professional water chiller supplier &exporter,we have our own shipment forwarder to arrange the shipment .Our chiller machine is with plywood packing,which prevent damage during transportation and meet export standards.There are three ways can delivery your chiller unit :

1. Ship by Air: As the chiller is with compressor ,water pump and fans ,the compressed refrigerant and oil inside the compressor is a dangerous item with the possibility of explosion , so it needs to release the compressed refrigerant before transportation. (It means that water chiller without refrigerant when choosing this shipping way. After the machine arrives at your destination, you need to add refrigerant by local professionals. The airline company also request us to provide many documents to prove that the chiller not a dangerous product. The freight cost by air is very high may be higher than the cost of chiller , So By air for delivery is not the mode of transport recommended to our customer.

2. Ship by Sea: The transportation time is longer than by air , but the freight cost is cheap ,and there is no need to add refrigerant after the equipment arrives at the destination.This shipping way is the most suitable mode of transportation for you to delivery your local port.

3.If you have your own shipment container in your other supplier in China, we can help you delivery the chiller machine to your supplier in any city of China .

Why should you choose Tongwei for your 120 Ton 400KW Air Cooled Screw Chiller supplier?

▪ Experience you can trust

We have been designing and building water chiller for over 15 years. From air cooled chiller to water cooled chillers and everything in between, we have built chillers for nearly every industry and every application.

▪ Fast Quote

Get a quote for your project today! We typically provide a custom quote within 2 hours.

▪ 24/7 customer service

Believe that we will always be by your side. Whether you have a question or need a quote, there‘s always someone answering the phone 24 hours a day.

▪ Durable and reliable machine

Our products are manufactured from high quality materials and we offer a competitive warranty on all  industrial chillers.

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