Industrial Chillers

What is an industrial screw chiller?

The industrial screw chiller is a type of high-efficiency cooling system, comprising a screw compressor, condenser, evaporator, expansion valve, control system, and cooling water circuit or cooling fan. As the equipment's core, the screw compressor executes the entire refrigeration process by compressing the refrigerant. Its robust refrigeration capacity allows widespread use in manufacturing plants, buildings, medical facilities, and data centers, where large-scale refrigeration is essential to provide stable low-temperature water for these industrial processes, ensuring normal production.

The application of industrial screw chillers is crucial in the pharmaceutical process. By effectively reducing temperatures, it prevents the decomposition and degradation of compounds in pharmaceuticals, ensuring the stability of the pharmaceutical process. Moreover, industrial screw chillers find extensive use in the chemical industry, food factories, and environmental testing of electronic components, delivering reliable temperature control solutions in these areas.

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How Does The Low Temperature Screw Chiller Work?

The low-temperature screw chiller is mainly divided into water-cooled screw chiller and air-cooled screw chiller. The equipment is mainly composed of a compressor, condenser, evaporator, expansion valve, control system, and other parts.

Compression process: The low-temperature screw compressor is the core component of the chiller. The refrigerant, in the form of gas in the environment, is sucked into the screw compressor, and the refrigerant gas is compressed, causing the temperature and pressure to rise.

Condensation process: The high-temperature and high-pressure gas refrigerant then enters the condenser. In the condenser, the refrigerant exchanges heat with the external environment. The refrigerant is cooled to a liquid state by a cooling medium (water or air), which radiates heat. During this process, the temperature and pressure of the refrigerant are reduced."

Expansion process: The cooled liquid refrigerant passes through the expansion valve into the low-pressure region. During this step, the temperature and pressure of the refrigerant drops dramatically, making it ready for the next stage.

Evaporation process: The evaporator is the key component of the refrigeration process and is usually installed in the area to be cooled. A low-temperature, low-pressure liquid refrigerant passes through the evaporator and changes from a liquid to a gas, absorbing heat from the surrounding area. This process results in a lower temperature in the area being cooled.

Control system: The control system can detect the temperature of the cooled area and make real-time adjustment according to the set temperature to ensure that the temperature of the cooled area is within the set range. At the same time, the control system can also carry out pressure detection, alarm and troubleshooting to ensure the stability of the equipment during operation and ensure the cooling effect.

Advantages Of KSW Series Industrial Screw Chillers

Siemens PLC System

Using Siemens PLC system intelligent control, inlet and outlet media temperature can be displayed in real time, with compressor protection, phase sequence detection, pump overload, automatic pressure relief, over-temperature protection, automatic power off and many other safety protection functions, faults, alarms and other real-time display

Saving Energy

Compressor can be infinitely adjustable, low energy consumption. The equipment can carry out heat recovery, summer heat recovery up to 30% ~ 40% of the cooling capacity; winter heat recovery up to 75% of the cooling capacity.

High accuracy

Can be ± 0.05 ℃ high-precision temperature control, real-time reading of the temperature value, temperature curve, through MODBUS RTU, CAN, RS485 and other communications remote setting of the temperature value, temperature conversion rate.

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Frequently Asked Questions

Q: What is chiller screw compressor?

A: Screw chiller a screw chiller is a liquid chiller that uses two rotating helical screws to provide the needed pressure to drive the vapor-compression refrigeration process.

Q: Which is better chiller screw compressor or centrifugal compressor?

A: Whether you run your chiller more often at part or full load will also influence your chiller selection. Centrifugal compressors have better full load efficiency, and screw compressors can achieve comparable part load efficiencies.

Q: Which is better screw or scroll chiller?

A: Scroll chillers can handle longer run times depending on the environment. If you are planning on running your unit 24/7 and fit the load requirement (over 30 tons), we will always recommend the air cooled screw chiller over the scroll system.

Q: What does a compressor in a chiller do?

A: Its function is: 1) to pump refrigerant through the cooling system and 2) to compress gaseous refrigerant in the system so that it can be condensed to liquid and absorb heat from the air or water that is being cooled or chilled.

Q: How does a screw chiller work?

A: A water cooled screw chiller is a type of chiller system that uses recirculating water from a cooling tower in order to facilitate heat exchange. Once the water is processed from a source, it goes through the condenser and cooling tower before it is emitted as cool air into the room or building.

Q: What is the main function of screw compressor chiller?

A: The screw compressor traps air between two meshed rotors, the air volume is then reduced as it moves through the rotors. The reduction in volume results in compressed air which is then used for a variety of applications.

Q: Which is better centrifugal chiller or screw chiller?

A: Capacity and load profile: Centrifugal chillers are suitable for high capacity applications, while screw and mag bearing chillers offer better part load efficiency. Noise sensitivity: For noise sensitive environments, screw chillers and mag bearing chillers are preferable due to their lower sound levels.

Q: What are the advantages of screw chillers?

A: Screw chiller has water cooled chillers and air cooled chiller. Water cooled chiller need to work with cooling towers. Screw type chiller advantages: Simple structure, fewer moving parts, less wearing parts, only 1/10 of the piston type, low failure rate, and long life screw compressor.

Q: What is the life expectancy of screw compressor chiller?

A: 15-20 years.If properly maintained, the service life of screw chillers and water cooled centrifugal chillers should be "15-20 years" and "more than 25 years" respectively.

Q: What are the advantages of screw compressor chiller?

A: Advantages of screw compressor chiller: Simple structure, few moving parts, few wearing parts, only 1/10 of the piston type, low failure rate, and long service life of the screw compressor.

Q: What types of screw compressor chiller are there?

A: Screw compressor chiller include water cooled chillers and air cooled chillers. Water cooled chillers need to be used in conjunction with cooling towers.

Q: Which type of screw compressor chiller is best?

A: Screw compressor chiller best serve hospitals and other noise sensitive environments. In contrast to air cooled chillers that use sound producing cooling fans, water cooled alternatives use quiet flowing water to keep your processes cool.

Q: What is the difference between screw compressor chiller and chiller?

A: The compressor performs a fundamental role in the operation of a chiller, making it possible to remove heat from indoor spaces or from industrial processes. Once the refrigerant in a chiller absorbs the heat from a building or process it becomes a gas, but it is incapable of releasing the heat right away in this form.

Q: Can a chiller work without a compressor?

A: Vapor absorption chillers have no compressor in the unit. Instead, they use a heat source, e.G. Solar energy or waste heat to drive the coolant through the system.

Q: What are the two basic types of screw compressor chiller?

A: Screw compressor chillerunder two main categories: Vapor compression and vapor absorption chillers.

Q: What is the maximum capacity of a screw chiller?

A: Screw chillers are available with capacity ranging from 30 to 800 tons. Screw chillers typically maintain design efficiency (kw/ton) at partial loads. The screw compressor can vary capacity in response to changing load, from 20 percent to 100 percent of capacity.

Q: What is the efficiency of a screw chiller?

A: Assembled into air cooled chiller packages or split units in the 20 to 200 ton capacity range screw chillers can be expected to perform at about 9 to 10 eer, equivalent to 1.15 to 1.06 kw per ton with an average of about 1.1 kw per ton.

Q: Why is it called screw compressor chiller?

A: The rotary screw chiller a displacement compressor type where rotating screws are used to compress the air. Compared with a piston compressor, the screw compressor compresses air continuously without pulsation. It has high efficiency at full load and low efficiency when partially loaded.

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