Water Cooled Screw Chiller

Water Cooled Screw Chiller is an efficient and reliable industrial chiller unit, with its main components featuring a screw compressor, hence referred to as water-cooled screw chiller. It utilizes a screw compressor and water-cooling heat dissipation method, providing excellent refrigeration capacity and stable performance. The chiller is equipped with a cooling tower or a cooling water circulation system, which utilizes external cooling water for heat dissipation, meeting a wide range of industrial demands. With a wide temperature control range and refrigeration capacity, it can precisely control temperatures between 3°C to 50°C, making it suitable for industries such as plastic processing, chemical, pharmaceutical, and others. Water Cooled Screw Chiller chillers are the ideal choice in the field of industrial cooling, ensuring stable operation of equipment and processes.

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 Application Scope in the Industry

Water Cooled Screw Chillers have extensive applicability in industrial settings. They are used in industries such as plastics (injection molding, extrusion), plastic packaging, automotive manufacturing, electronics manufacturing, electroplating, pharmaceuticals, chemicals, ultrasonic cooling, printing, and others. They maintain stable operating temperatures for equipment and processes, thus improving production efficiency. Water-cooled screw chillers are typically suitable for large-scale cooling requirements in production and processing equipment. They are widely used in industries such as plastic processing (injection molding, extrusion), meeting various process cooling needs, greatly enhancing the production efficiency and product quality of plastic molding machines.

Injection Molding Industry

Extrusion Industry

Plastic Packaging Industry

Pharmaceutical Industry

Automotive Manufacturing Industry

Chemical Engineering Industry

Electroplating Industry

Electronics Industry

Printing Industry

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 Highlights of the Product

Semi-hermetic Screw Compressor

With low noise and vibration levels, it achieves energy savings of over 20%.

The water-cooled screw compressor utilizes a semi-hermetic screw compressor, offering advantages such as stability, reliability, low noise, and low vibration. During the compression process, gas enters the compression chamber from the suction end of the screw, and as the screw rotates, the gas is gradually compressed and eventually discharged through the exhaust end. The thread shape and rotational motion of the screw ensure the continuity and stability of the gas during the compression process. Bitzer or Hanbell, two globally renowned brands, provide the screw compressors used in the Xiecheng water-cooled screw compressor, ensuring long-lasting, efficient, and stable operation. Compared to traditional scroll compressors, it achieves energy savings of over 20%, resulting in more energy-efficient operation.

Features：1. 20% Energy Saving     2. low Noise     3. Low Vibration

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 Stepless Capacity from 25% to 100%

Screw compressors feature stepless capacity control, which means that a single compressor can continuously adjust the cooling capacity in any range between 25% to 100%. This allows for precise control of energy output, ensuring stable and efficient operation.

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 Shell and Tube Evaporator

The Water Cooled Screw Chiller utilizes a shell and tube evaporator. In this system, the refrigerant evaporates inside the heat exchange tubes, while water flows on the shell side. To enhance the heat exchange efficiency, a 2mm thick baffle plate is installed on the shell side, causing the water to flow back and forth to create ice brine. Additionally, to maintain a stable operating temperature, the exterior shell of the evaporator is covered with insulation material.

For the heat exchange tubes, we employ high-efficiency seamless copper tubes. These tubes undergo a grooving process to form internal thread fins, thereby increasing the heat exchange surface area with the refrigerant. With this technology, the heat transfer area is doubled, significantly improving the heat transfer efficiency.

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 Shell and Tube Condenser

Water Cooled Screw Chiller utilizes a shell and tube condenser, with the internal copper tubes employing an outer thread embossing process. This design effectively enhances the heat exchange efficiency between the refrigerant and water during the process. Compared to traditional smooth copper tubes, the outer thread embossing process increases the surface area of the copper tubes, thereby expanding the contact area for heat exchange and improving the thermal conductivity of the condenser. This optimization design allows the condenser of the water-cooled chiller to transfer heat from the refrigerant to the water more rapidly and consistently, enabling the water to carry away the heat.

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 RS485 Remote Communication System

Equipped with RS485 communication capability, this feature enables the integration of the water-cooled screw chiller and plastic molding machine into a single data platform, enabling automated remote management.

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If you are looking for more details, kindly visit 50hz Water Cooled Screw Chiller.

 Variable Frequency Drive System (optional)

Highly efficient and energy-saving, utilizing world-class onboard variable frequency drive technology, which greatly enhances the partial load energy efficiency of the unit. The highest integrated part load value (IPLV) can reach around 10.

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 Product Details

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Industrial processes generate a lot of heat, which must be dissipated to avoid damage to sensitive equipment and to protect the finished product. A proven method of monitoring and regulating temperatures to optimum levels involves the use of cooling systems that can be water or air cooled. This article will focus on the differences between water cooled chillers and air cooled chiller systems.

Air cooled chillers versus water cooled chillers

Although both air-cooled chillers and water-cooled chillers remove unwanted heat from the manufacturing process, they differ in many ways. Deciding which chiller is best for your industrial application depends on several factors, such as

Chiller condenser mechanism

Cost difference between water and air-cooled

Chiller capacity range

Environmental and location considerations

Air-cooled vs. water-cooled condensers

There is a clear difference between air-cooled chillers and water-cooled chillers with condensers. Air-cooled chillers are equipped with a condenser that uses ambient air to lower the temperature of the refrigerant. Fans force the air through the ducts containing the refrigerant, thus removing the heat from it. The cooling refrigerant used in the chiller can then be circulated through the industrial process to achieve the cooling effect.

Water Cooled Screw Chillers

In contrast, water-cooled chillers use the high heat capacity of water to promote refrigerant cooling. The typical coolant used in a water-cooled system is a mixture of water and the coolant glycol, which is circulated in a network of sealed pipes. Cooling occurs when the cooled refrigerant passes through a heat exchanger connected to the industrial process. The heated coolant is then returned to the cooling tower or refrigeration unit, removing the heat gained and preparing it for another cooling cycle.

However, these are not the only differences between air cooling and liquid cooling.

Costs

Another key factor to keep in mind when comparing air-cooled and water-cooled chillers is the cost of purchase, installation and maintenance.

Initial cost

Depending on their design and operation, air-cooled chillers may seem to offer higher face value compared to water-cooled units. Firstly, air-cooled systems are characterised by the cost of installation of ducts, fans and temperature regulation controls. Does this mean that liquid cooling is superior to air cooling? Not necessary. There are further costs to consider.

Operating costs

In addition, air-cooled chiller systems consume more energy to power the fans to facilitate their cooling effect, which translates into higher electricity bills.

On the other hand, although water-cooled chillers are less expensive to install, they usually have higher long-term operating costs as most of these chillers require the installation of cooling towers.

 Modular Type Air Cooled Scroll Chiller

Maintenance costs

In addition, the operating costs of water-cooled chillers can be significantly higher when considering chiller maintenance costs such as water quality testing, mandatory water treatment and refrigeration system operating costs.

Unlike air coolers, water chillers require cooling towers, which leads to expensive maintenance requirements: condenser tube cleaning, anti-freeze, water treatment and tower mechanical maintenance. In addition, regular maintenance will help you to achieve optimum chiller safety in your workplace.

Capacity range

Is water cooling better than air cooling as far as size is concerned? Air-cooled chillers are available in sizes ranging from 7.5 - 500 tonnes. Water cooled chillers, meanwhile, have a higher cooling capacity of 10 - 4,000 tonnes.

Environment / Location

The planned location of the chiller is another key point to consider when deciding on an industrial chiller. Again, depending on the site plan, there are advantages and disadvantages to choosing an air-cooled or water-cooled chiller.

Indoor locations

Both air-cooled and water-cooled chillers can be installed indoors. However, for air-cooled chillers, additional space must be considered. This is because air-cooled chillers need access to sufficient ambient air in order to operate properly.

Placing an air-cooled chiller in a poorly ventilated indoor space will affect its cooling capacity and reduce its efficiency. In contrast, chillers can be installed in areas with minimal ventilation, as their cooling towers can be placed on the exterior of the building.

Outdoor locations

Choosing an air-cooled chiller in an outdoor environment is advantageous because of the unrestricted access to the high flow of ambient air required to facilitate coolant cooling. For this reason, water-cooled chiller systems are rarely located in outdoor locations

Contact us to discuss your requirements of Modular Air Cooled Chiller. Our experienced sales team can help you identify the options that best suit your needs.