Air Cooled Inverter Screw Chillers

100 TR to 500 TR

Air Cooled Inverter Screw Chiller Manufacturer in India

Reynold India manufactures Air Cooled Inverter Screw Chillers for industrial and process cooling applications where reliable performance, precise temperature control and efficient operation under varying cooling loads are important. These chillers combine screw compressor technology with variable-speed inverter control, allowing the refrigeration system to adjust its capacity according to the actual cooling requirement.

An air cooled inverter screw chiller rejects heat directly to the surrounding atmosphere through an air-cooled condenser. Unlike a water-cooled chiller, it does not require a cooling tower or a separate condenser-water circuit. This makes it a practical choice for many industrial installations where water consumption, cooling-tower maintenance or additional water-side infrastructure needs to be minimized.

Reynold India's current Air Cooled Inverter Screw Chiller page lists a capacity range of 100 TR to 500 TR. Depending on the selected configuration, the system can be designed with modern inverter-driven screw compressor technology, automated controls and refrigerant options suited to the application.

What Is an Air Cooled Inverter Screw Chiller?

An Air Cooled Inverter Screw Chiller is a refrigeration system that uses an inverter-driven screw compressor to remove heat from chilled water or another suitable process fluid.

The screw compressor is the heart of the refrigeration circuit. It compresses the refrigerant and circulates it through the condenser, expansion device and evaporator. The evaporator absorbs heat from the process fluid, while the air-cooled condenser releases that heat into the surrounding air.

The inverter allows the compressor to operate at variable speed instead of being restricted to a single fixed operating speed. This becomes particularly useful when the cooling load changes during production or throughout the day.

For example, a process may require high cooling capacity during peak production but significantly less cooling during idle or low-load periods. Variable-speed operation allows the chiller to respond to these changes and operate closer to the actual demand.

Actual energy performance depends on the complete system design, ambient conditions, fluid temperatures, load profile and operating conditions.

How Does an Air Cooled Inverter Screw Chiller Work?

The operation is based on the standard vapor-compression refrigeration cycle.

First, the inverter-driven screw compressor compresses the refrigerant, increasing its pressure and temperature. The high-pressure refrigerant then moves into the air-cooled condenser.

Condenser fans move ambient air across the condenser coil. Heat from the refrigerant is transferred to the atmosphere, causing the refrigerant to condense.

The high-pressure liquid refrigerant then passes through an expansion device. Its pressure and temperature are reduced before it enters the evaporator.

Inside the evaporator, the low-temperature refrigerant absorbs heat from the chilled water or process fluid. As heat is removed, the process fluid reaches the required supply temperature and is circulated to the application.

The refrigerant then returns to the compressor, and the cycle continues.

In an inverter system, compressor speed can be adjusted according to cooling demand. This allows the chiller to modulate its capacity instead of relying only on conventional fixed-speed operation.

Reynold India Air Cooled Inverter Screw Chiller Technology

Reynold India's product information describes a CSVH series compressor configuration with an inbuilt inverter. The available specifications also mention permanent-magnet motor options for larger motors, an integrated three-step oil separator, automatic two-step VI slider, integrated check valve, oil filter and built-in MODBUS communication.

These features are intended to support efficient and controlled screw-compressor operation, particularly when the chiller operates under changing loads.

The use of integrated compressor and control technologies can also simplify system coordination compared with arrangements where several functions are handled through separate external components.

Key Features of Air Cooled Inverter Screw Chillers

• Inverter-Driven Screw Compressor: The inverter-driven screw compressor allows compressor speed to vary according to the required cooling load. This can provide better capacity matching during part-load operation.
• Variable-Speed Capacity Control: Variable-speed control allows the chiller to reduce or increase its cooling output as the process requirement changes. This is especially valuable for industrial plants where cooling demand is not constant.
• Permanent Magnet Motor Options: Reynold India's product information identifies permanent-magnet motor options for larger compressor motors. Permanent-magnet motors can offer high efficiency in suitable operating conditions, particularly during part-load operation.
• Integrated Oil Management: The listed compressor design incorporates an integrated oil separator and oil-management components. Proper oil circulation is essential for reliable screw-compressor operation.
• Automatic VI Slider: The compressor configuration includes an automatic two-step VI slider. The volume ratio adjustment helps the compressor operate appropriately across different pressure conditions.
• MODBUS Communication: Built-in MODBUS communication allows the chiller control system to exchange information with compatible automation and monitoring systems. This can be useful for industrial plants using centralized monitoring or SCADA systems.
• Air Cooled Condenser: The condenser rejects heat directly to ambient air. Therefore, a separate cooling tower and condenser-water circuit are generally not required.
• Industrial Automation: Automated controls can monitor important operating parameters and manage chiller operation according to programmed conditions. The final control architecture depends on the selected project configuration.

Benefits of Air Cooled Inverter Screw Chillers

One of the most important advantages of an inverter screw chiller is its ability to respond to changing cooling demand.

Industrial processes rarely operate at exactly the same cooling load throughout the day. Production rates, ambient temperatures, machine operation and process conditions can all affect the cooling requirement.

A variable-speed compressor can reduce its speed when the cooling load decreases and increase capacity when the demand rises, within its designed operating range.

This can provide several practical benefits:

• Better matching of cooling capacity with actual demand
• Improved part-load operating performance
• Stable chilled-water temperature
• Reduced dependence on cooling towers
• Lower water consumption compared with water-cooled condenser systems
• Automated capacity control
• Suitable for applications with variable cooling loads
• Easier integration with plant monitoring systems
• Reduced requirement for a separate condenser-water system

The actual operating cost and energy consumption should always be evaluated using the site's real operating conditions.

Applications of Air Cooled Inverter Screw Chillers

Air Cooled Inverter Screw Chillers are suitable for medium- and large-capacity industrial cooling applications.

• Plastic Processing Industry: Plastic processing machines generate substantial heat during production. Chilled water is commonly used for mould cooling, process cooling and temperature control.
  Reynold India also lists Air Cooled Inverter Screw Chillers within its plastics-industry product category, making this technology relevant for applications such as injection moulding and other plastic-processing systems.
• Injection Moulding: Injection moulding requires controlled mould temperatures for consistent production. A properly selected chiller can provide the required cooling water to the mould and associated equipment.
• Manufacturing Plants: Manufacturing facilities often require process cooling for machinery, hydraulic systems, heat exchangers and production equipment. An inverter screw chiller can be considered where the load varies during plant operation.
• Pharmaceutical Industry: Pharmaceutical manufacturing may require controlled process temperatures for equipment and production systems. Chiller selection should be based on the actual temperature, flow, fluid and process requirements.
• Food and Beverage Industry: Cooling is used in several food and beverage processes. Air cooled inverter screw chillers can provide process cooling where the required operating conditions fall within the chiller's design range.
• Commercial and Institutional Cooling: Depending on capacity and operating conditions, air cooled inverter screw chillers can also be used for selected HVAC and comfort-cooling applications.

Why Choose an Inverter Screw Chiller?

Screw compressors are well suited to larger cooling capacities, while inverter technology provides variable-speed operation. Combining these technologies can therefore be useful for applications where the cooling load changes significantly.

A fixed-speed compressor may need to operate through capacity steps or cycling to meet changing demand. An inverter-driven compressor can modulate its speed within its operating range, providing a more continuous response to load changes.

This does not mean that an inverter screw chiller will automatically consume less power in every installation. The result depends on correct sizing, compressor selection, condenser performance, chilled-water temperatures, ambient conditions and the actual load profile.

For this reason, engineering the chiller around the application's operating conditions is more important than selecting equipment based only on its nominal capacity.

Air Cooled Inverter Screw Chiller vs Fixed-Speed Screw Chiller

The main difference is how compressor capacity is controlled.

A conventional fixed-speed screw chiller generally operates at a fixed compressor speed and uses mechanical or other capacity-control methods to match the load.

An inverter screw chiller can vary compressor speed according to the cooling requirement. This can provide finer capacity matching, especially when the plant frequently operates at part load.

For facilities with relatively constant high cooling demand, the advantages of variable-speed operation may be different from those in a plant with large load fluctuations. Therefore, both load profile and annual operating pattern should be considered during equipment selection.

Refrigerant Options

Reynold India's current Air Cooled Inverter Screw Chiller page lists refrigerant options including R-134a, R-407C, R-410A, HFO and R-513A.

The appropriate refrigerant depends on the selected compressor, operating temperature, environmental requirements, project specifications and applicable regulations. Refrigerant selection should therefore be finalized during engineering rather than assumed solely from the product category.

How to Select the Right Air Cooled Inverter Screw Chiller?

Correct chiller sizing is essential for reliable operation and efficient performance.

The following parameters should be considered:

• Cooling Capacity: Determine the actual heat load that needs to be removed.
• Entering and Leaving Water Temperature: These values determine the required temperature difference and influence chiller capacity.
• Flow Rate: The required chilled-water flow must be established based on the process and heat-transfer requirement.
• Ambient Temperature: Because the condenser is air cooled, the design ambient temperature has a direct impact on system performance.
• Process Fluid: Water, glycol mixtures and other fluids have different thermal properties and may require different system designs.
• Operating Profile: Determine whether the plant operates continuously, intermittently or with large variations in load.
• Installation Conditions: Space, ventilation, electrical supply, altitude and outdoor environmental conditions should all be considered.

Providing accurate process data to the chiller manufacturer helps avoid oversizing, undersizing and unnecessary operating costs.

Air Cooled Inverter Screw Chiller Manufacturer in India

Reynold India is an Indian manufacturer of industrial and process cooling systems, with a portfolio covering air cooled and water cooled screw chillers, scroll chillers and customized industrial cooling solutions. Its current Air Cooled Inverter Screw Chiller page lists a 100 TR to 500 TR range.

The company's product portfolio also includes specialized chillers for plastics, pharmaceuticals, medical equipment, hydrogen applications, hazardous environments and other industrial processes.

For an industrial chiller project, Reynold India can evaluate the process requirement and select the appropriate compressor, heat exchanger, controls, refrigerant and hydraulic configuration according to the application.

Why Choose Reynold India?

Choosing an industrial chiller is not only about the compressor or nominal cooling capacity. Long-term performance depends on equipment selection, heat-exchanger design, controls, installation conditions and the way the system operates throughout the year.

Reynold India's Air Cooled Inverter Screw Chillers are designed around variable-load operation, with inverter-driven screw compressor technology and automation features such as MODBUS communication.

For industries where cooling demand changes significantly, this type of capacity control can provide a practical approach to managing cooling output while maintaining the required process temperature.

Frequently Asked Questions

• What is an Air Cooled Inverter Screw Chiller? An Air Cooled Inverter Screw Chiller is a refrigeration system that uses an inverter-driven screw compressor and an air-cooled condenser to provide controlled cooling for industrial, process or HVAC applications.
• What is the capacity range of Reynold India Air Cooled Inverter Screw Chillers? The current Reynold India product page lists a capacity range of 100 TR to 500 TR.
• What is the advantage of an inverter screw compressor? An inverter screw compressor can vary its operating speed according to cooling demand. This allows the chiller to match its capacity more closely to changing load conditions, particularly during part-load operation.
• Does an air cooled screw chiller require a cooling tower? No. An air cooled screw chiller rejects heat directly to ambient air through its condenser, so a separate cooling tower and condenser-water system are generally not required.
• Can the chiller be integrated with a plant automation system? Yes. Reynold India's product information lists built-in MODBUS communication, allowing communication with compatible monitoring and automation systems.
• Which industries can use an inverter screw chiller? Applications can include plastic processing, injection moulding, manufacturing, pharmaceuticals, food and beverage processing, HVAC and other industrial processes requiring medium- to large-capacity cooling.

Get an Air Cooled Inverter Screw Chiller for Your Application

Every industrial cooling application has different operating conditions. The right chiller should be selected according to the actual cooling load, water flow, required temperatures, ambient conditions and operating profile.

Reynold India provides Air Cooled Inverter Screw Chillers for industrial and process cooling applications, with variable-speed compressor technology and automation options. Contact Reynold India with your process requirements to select a suitable chiller configuration for your plant.