Do you know what an air-cooled chiller is and how it works?

From manufacturing processes to district cooling efforts, choosing the right chiller is an important decision for many places, impacting both energy efficiency and performance.

By this article, let’s look at questions such as what air cooled chillers are and how they work, as well as the advantages of Ruidong’s air cooled scroll chillers.

•  What is an air cooled chiller? 

An air cooled chiller is a type of cooling system that uses air form space as the cooling medium instead of water. It works by circulating water or other fluids through a system to absorb heat and lower the temperature of the area or equipment.

There are various applications of air-cooled chillers: they’re used on industrial processes, data center cooling, commercial buildings, HVAC and district cooling, where a reliable cooling system is essential for optimal performance. Air-cooled chillers are divided into air-cooled scroll chillers and air-cooled screw chillers.

•  Comparison between air-cooled scroll chiller and air-cooled screw chiller: 

Both air-cooled scroll chiller and air-cooled screw chiller are cooling equipment. An air-cooled scroll chiller is a specific type of air-cooled chiller that utilizes scroll compressors as the primary cooling technology. On the other hand, air-cooled screw chillers employ screw compressors as the primary cooling technology, which completes the compression of gas through the rotation of the screw.

Both use ambient air as the heat dissipation medium to remove heat from the space. They follow the refrigeration cycle, starting with the compressor acting on the refrigerant gas and raising its temperature.

Then comes the condenser, which is responsible for liquefaction. Through the expansion valve, the pressure and temperature of the refrigerant are lowered, resulting in evaporation. It’s now time for the heat absorption in an evaporator. After completing this task, the cycle can be repeated.

What these two air-cooled chillers have in common is that they are easy to install and have low water consumption. An air-cooled screw chiller usually performs better in terms of energy consumption and refrigeration efficiency under T3 operating conditions.

•  Advantages of Ruidong air-cooled scroll chiller unit: 

  

• Famous brand scroll compressor: It adopts fully enclosed scroll compressor produced by a world-famous brand. It has the advantages of fewer moving parts, smaller rotational torque, lower noise and vibration, higher reliability and efficiency.

• Multi-circuits independent system: The unit adopts a dual-compressor dual-circuit independent system, which can work independently. When one circuit fails, it can be repaired separately without affecting the normal operation of the other circuit.

• Excellent performance: The unit is available in cooling-only type and heat pump type. The heat pump air-cooled chiller can provide both cooling and heating. It has fast cooling speed, stable low-temperature heating performance in winter, and intelligent defrosting that is quick and thorough.

• The unit can achieve:

        (1) All-year cooling at a minimum ambient temperature of -20℃

        (2) Heating at a minimum ambient temperature of -35℃

        (3) Natural cooling at a minimum ambient temperature of -35℃

• Complete protection measures: It adopts advanced microcomputer control system, has complete safety protection functions, and has powerful fault self-diagnosis function.

• Low maintenance cost: The unit is light, the internal structure is compact and the layout is reasonable, which is easy to transport and flexible to install. It is easy to maintain and repair during use, and the maintenance cost is low.

• Low noise: Low operating noise and small vibration, suitable for all kinds of places.

In addition, air-cooled scroll chillers can be modularized. A modular chiller is a combination of multiple chillers to create an expandable cooling system. One main module can control up to 7 sub-modules. During the startup process, with the advantages of the RdCloud IoT platform, while improving the accuracy and reliability of control, it can also achieve multi-level energy regulation and uniform load distribution between unit modules, keeping the unit in an economical operating state.

The modular approach of the air-cooled scroll unit can solve the problem of unit placement. It can be freely combined according to the required load and is easy to use. It is suitable for air conditioning projects in hotels, apartments, guesthouses, office buildings, shopping malls, theaters, factories, hospitals and other buildings, especially those with high requirements on noise and surrounding environment.

The air-cooled scroll unit itself also has the following advantages, which are also important cost considerations when purchasing the unit:

• Save Water : Air-cooled chillers save cooling water systems and do not require cooling towers, water pumps, boilers, and corresponding piping systems.

• Simple system structure: The device can be placed directly on the roof, platform or flat ground, without the need to build a machine room or boiler room. It is safe and clean, saves space, and is easy to maintain and manage.

• The unit can still operate efficiently in low temperature environments:

        The air-cooled scroll units produced by Ruidong can be divided into ordinary units (can operate normally at -7°C), air-supplementing and enthalpy-increasing units (can operate normally at -25°C), and ultra-low temperature modules (can operate normally at -35°C). Our units will undergo operation tests before leaving the factory. Ruidong's enthalpy difference laboratory can achieve arbitrary temperature adjustment from -35°C to 50°C and arbitrary humidity adjustment from 40% to 90%, ensuring that each unit is 100% qualified before leaving the factory.

•  Some of Ruidong's projects are shown below:

Ruidong Group Co., Ltd. has advanced production equipment and technology to ensure stable and reliable product quality. The company has a professional R&D team and a complete customer service system, which can provide personalized customized services, demonstrating strong market competitiveness and good reputation.

----- Project 1:

Project name: Iran IBH Private Bank Headquarters

Project address: Iran Tehran

Project Overview: This project is located in Tehran, the capital of Iran, with a total construction area of about 20,000 square  meters. There are 2 service halls and 20 office partitions.

Select unit: single -cold air -cooled module unit RLSFWM068B, a total of 8 units

----- Project 2:

Project name: Dahuanqi branch workers' production and living renovation and improvement project

Project address: Chengde City, Hebei Province

Project overview: Saihanba is located in the Bashang area of Hebei Province, with an altitude of more than 1,400 meters, and the lowest temperature in winter can reach -35℃

Selected units: 8 sets of ultra-low temperature module air-cooled scroll chillers and heat pump units

----- Project 3:

Project name: Central air conditioning system renovation of shopping malls

Project address: Qiansheng Department Store at the junction of Jiaotong Road and Renmin Road, Yuanhui District, Luohe City, Henan Province

Project overview: 32,000 square meters of shopping malls

Selected units: 30 sets of LSWFM150BR modular air-cooled chilled water heat pump units

----- Project 4:

Project name: Ruiyuan Xiangcheng International Central Air Conditioning Project

Project address: Xiangcheng City, Henan Province

Project overview: 50,000 square meters of shopping mall

Selected units: 43 sets of LSWFM136BR air-cooled modules, combined air handling units, fire exhaust fans, fire dampers

Ruidong Group Co., Ltd. was established in 2011 and has more than 13 years of industry experience, specializing in the design, production, sales, installation and maintenance of central air conditioning and ventilation equipment. We can provide product customization services and can meet the needs of T3 working conditions. We use compressors and electrical components from world-renowned brands and always provide customers with high-quality products and services. You can customize it according to your specific needs, and we can provide you with the right choice.

For more information, you can contact us at any time using the contact information on the website.