Do you know What Is a Modular Chiller with Free Cooling?

2025-09-10

In the world of commercial air conditioner and industrial chiller systems, two concepts stand out for delivering exceptional efficiency and reliability: modularity and free cooling. When combined, they create one of the most powerful and cost-effective cooling solutions available today.

Our air cooled scroll chiller systems are engineered with this powerful combination at their core, designed to significantly reduce operational expenses and carbon footprint for data centers, hospitals, manufacturing plants, and large office buildings.

Introduction to the principle

Part 1: The Genius of Modular Design

A modular chiller breaks away from the traditional single, large compressor unit. Instead, it comprises multiple independent, smaller refrigeration modules-each a complete air cooled chiller in its own right-within a single frame.

How it Works: A sophisticated master controller intelligently stages these modules on and off based on the real-time cooling demand (load).

Key Benefit - Precision Matching: Instead of a large unit cycling inefficiently at partial load, only the necessary number of modules run, each operating at its peak efficiency. This eliminates the "all-or-nothing" energy waste common in traditional systems.

Key Benefit - Built-in Redundancy: If one module requires maintenance or fails, the remaining modules continue to operate, ensuring your critical operations never experience a total shutdown. This N+1 redundancy is crucial for industrial air conditioning and data centers.

Part 2: Harnessing Nature with Free Cooling

Free cooling, also known as air side or water side economization, is the process of using cool outdoor air to provide cooling without running the energy-intensive compressors.

How it Works: The system is equipped with an additional plate heat exchanger. When sensors detect that the outdoor temperature is low enough, it automatically switches modes:

Mechanical Cooling Mode: When outdoor temps are high, the system operates as a standard air cooled scroll chiller, rejecting heat through its condenser.

Free Cooling Mode: In colder weather, valves redirect the warm water from the building loop through the free cooling heat exchanger. The cold outdoor air (often via a cooling tower) absorbs the heat directly, bypassing the compressors entirely. The compressors remain off, saving massive amounts of energy.

Integrated Mode: In mild weather, the free cooling system pre-cools the water, significantly reducing the workload on the compressors.

How it Works

Advantages

Compressor system

Environmental protection,High reliability,long service life, Low running costs.

High-efficient heat exchange copper pipe

High-efficient heat exchange system and Good heat transmission performance

Automatic control

Adopt the most advanced intelligent control,the unit is equipped with many kinds of protection functions:high and low pressure protection, water interrupt,antifreeze,overheating,over-temperature,overload and other protection functions, without needing special management personnel,greatly convenient for users to use.

Low ambient temperature EVI Air source heat pump technology

The unit can work at thelowest ambient temperature above-25℃ .The EVI leads to the increase of heating capacity and the decrease of exhaust temperature.-It can increase heating capacity by up to 30%at low ambient temperature.

APPLICATION:

This technology is ideal for applications with:

Data Centers (IDCs)

This is the most classic application scenario, where energy savings translate directly into significant operating cost savings.

Communications Rooms/Base Stations

Communication base stations operate year-round, require high efficiency, and typically have high cooling requirements.

Hospitals (operating rooms, ICUs, laboratories)

These have extremely high requirements for temperature, humidity, and reliability.

Precision electronics, pharmaceutical, chemical, and other manufacturing industries

These require a process cooling environment with constant temperature and humidity.

Interior Cooling of Large Commercial Buildings

Even in winter, core areas of large shopping malls or office buildings may require cooling.High operating speeds

Ready to Slash Your Cooling Costs and Boost Reliability?

Our experts are ready to analyze your specific needs and provide a customized solution featuring our award-winning modular chiller technology with free cooling.

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