Water-Cooled Screw Chiller Unit

The Water-Cooled Screw Chiller Unit is engineered for high-efficiency, continuous operation across commercial and industrial sectors. Featuring a screw-type compressor and water-cooled configuration, it delivers superior heat exchange, quieter operation, and longer equipment lifespan compared to conventional air-cooled chillers. Integrated variable frequency drive (VFD) technology and intelligent control systems provide flexible, precise cooling to meet dynamic load demands.

This chiller serves as the central cooling source for large buildings, factories, data centers, medical facilities, and laboratories, ensuring energy efficiency and stable temperature control for sensitive applications.

Major System Components

Twin-Screw Compressor: Semi-hermetic design, stepless capacity modulation (10–100%), low vibration, quiet operation, 24/7 continuous performance.

Shell-and-Tube Condenser: Seamless copper tubes in a steel shell for efficient heat rejection and long-term durability.

Flooded / Direct Expansion Evaporator: Provides stable chilled water temperature with high heat transfer efficiency.

Oil Separator: Removes entrained oil from refrigerant, ensuring proper lubrication and heat exchanger performance.

Expansion Device (TXV / EEV): Precise superheat control and improved part-load efficiency.

Intelligent Electrical Control: PLC or microprocessor-based system for automated operation, monitoring, diagnostics, and remote integration via BACnet or Modbus.

Configuration Parameters

Core Performance Parameters

1. Cooling Capacity Range

Standard water-cooled screw chiller units: 125~1800kW

Flooded high-duration models: 443~3484kW, suitable for large industrial and commercial applications

Special low-temperature models can output water as low as -45°C, cooling capacity covers 5~2200kV

2. Energy Efficiency Ratio (COP)

Conventional water-cooled screw chiller units: 4.4~5.2

High-efficiency flooded models: COP can reach 5.8~6.2, with even higher efficiency under partial load

Energy-certified products have a measured COP of 5.46~5.86, meeting the national first-class energy efficiency standard

3. Input Power and Voltage

Input Power: Starting from 7.5kW, large units can reach hundreds of kW

Voltage Standard: 380V/50Hz, some high-power models support 6000V high-voltage power supply

4. Outlet Water Temperature Control

Chilled water outlet temperature: 5~25℃ Temperature control accuracy can reach +0.1°C, meeting the requirements of precision manufacturing processes.

5. Noise Level

Operating noise is generally between 75 and 85 dB(A).

High-end low-noise models can control it below 60 to 70 dB, approaching the noise level of an office environment.

Key Performance Advantages

High Efficiency: VFD technology minimizes energy waste; multi-compressor configurations save up to 20% energy over traditional designs.

Reliable Operation: Low vibration, minimal noise, robust construction for continuous 24-hour operation.

Flexible Load Modulation: Stepless capacity adjustment from 10–100% of rated load for variable cooling demands.

Easy Maintenance: Accessible design for routine checks, component replacement, and predictive maintenance via intelligent controls.

Versatile Applications: Chilled water supply 3–20°C, suitable for commercial AC, industrial processes, data centers, and medical facilities.

Application

1.Commercial Buildings

Large shopping malls, office towers, hotels, convention centers, and mixed-use developments rely on water-cooled screw chillers as the central cooling plant for their HVAC systems. The Water-Cooled Screw Chiller Unit provides a reliable, efficient, and quiet central cooling source capable of meeting the full range of building cooling loads throughout the year.

2.Data Centers

In data center cooling applications, the product operates in conjunction with cooling towers and computer room air handlers or in-row cooling units to maintain precise server inlet temperatures and protect critical IT infrastructure.

The combination of high efficiency and precise capacity control enables data center operators to achieve Power Usage Effectiveness (PUE) values below 1.3, significantly reducing the energy overhead of IT cooling infrastructure.

3.Industrial Process Cooling

In injection molding, electroplating, chemical processing, food and beverage manufacturing, and pharmaceutical production, precise and reliable process cooling is essential to product quality, production throughput, and operational safety. It delivers stable, accurately controlled process cooling water to meet the stringent temperature requirements of these demanding industrial applications.

4.Medical and Scientific Facilities

Hospitals, clean rooms, laboratories, and research facilities require highly reliable, precisely controlled temperature environments for both patient comfort and the integrity of sensitive processes and equipment. The Lynxcool Water-Cooled Screw Chiller Unit provides the stability, reliability, and control precision required to meet the exacting standards of healthcare and scientific facility HVAC applications.

5.Electronics Manufacturing

Semiconductor fabrication plants, PCB assembly facilities, and electronics testing laboratories require stable, contamination-free cooling environments with precise temperature control. The Lynxcool chiller supports these requirements while meeting the stringent reliability expectations of high-value electronics manufacturing operations..

Selection and Installation Guidelines

Load Calculation: Use detailed heat gain analysis considering building envelope, occupancy, equipment loads, and climate.

Auxiliary Equipment: A complete water-cooled chiller system requires the following auxiliary equipment to be designed and installed as an integrated system:

● Cooling tower(s) sized to reject the full condenser heat load at design ambient wet-bulb temperature

● Condenser water circulation pumps with appropriate flow rate and head

● Chilled water circulation pumps for primary and secondary circuits as applicable

● Insulated chilled water buffer tank to provide hydraulic stability and thermal storage

● Water treatment system to maintain cooling tower water quality and prevent scaling, corrosion, and biological growth

● Piping, valves, strainers, expansion tanks, and air vents as required by the system design

Installation Environment: The Lynxcool Water-Cooled Screw Chiller Unit should be installed in an indoor mechanical room that meets the following environmental requirements:

● Good natural or mechanical ventilation to prevent heat accumulation

● Absence of corrosive gases, chemical vapors, or excessive dust

● Ambient temperature maintained below 45°C at all times

● Adequate structural floor loading capacity to support the chiller unit weight

● Sufficient clearance around all sides of the unit for maintenance access, as specified in the installation manual

● Vibration isolation pads or spring isolators installed between the unit base and the floor structure to minimize vibration transmission to the building

Why Choose Lynxcool Water-Cooled Screw Chillers?

Lynxcool Water-Cooled Screw Chillers combine advanced screw compressor technology, intelligent controls, and robust engineering quality. We offer tailored solutions for virtually any commercial or industrial project. With global application engineering support, after-sales service, and a proven track record across hundreds of projects with clients like Nestlé, Coca-Cola, PepsiCo, Mars, Danone, and Unilever, Lynxcool ensures performance, efficiency, and long-term reliability.