What is Heat Recovery Chillers?

A heat recovery chiller or heat recycling chiller is a type of cooling system that utilizes the waste heat generated during the cooling process to provide heating or hot water for other purposes. This system is designed to improve energy efficiency by reusing the waste heat that would otherwise be discarded, thus reducing energy consumption and costs.

The Basic Principle of Heat Recovery Chillers

The basic principle behind a heat recycling chiller is capturing the heat that is removed from the cooled space and utilizing it for other needs. During the cooling process, a refrigerant is used to absorb heat from the cooled space and then release it to the environment. In a heat recycling chiller, this released heat is captured through a heat exchanger and transferred to a secondary fluid or water, which can then be used for heating or hot water purposes.

heat recycling chiller

Here are some details on how it works:

  • Heat Exchanger: A heat exchanger is integrated into the system, typically near the condenser. The heat exchanger captures the waste heat released by the refrigerant during the condensation process.
  • Heat Transfer: The heat exchanger transfers the captured heat to a secondary fluid or water, which is circulated through a separate loop. The heat transfer is facilitated by the temperature difference between the hot refrigerant and the cooler secondary fluid.
  • Heat Utilization: The heated secondary fluid or water can be used for various heating applications, such as space heating, hot water supply, or even preheating processes in industrial settings. This efficient utilization of waste heat significantly improves the overall energy efficiency of the cooling system.

By incorporating a heat exchanger to capture and repurpose waste heat, heat recycling chillers transform a single-purpose cooling system into a versatile solution that provides both cooling and heating capabilities, making them an attractive option for businesses and industries looking to improve their energy efficiency and reduce costs.

Industries and Applications

Heat recycling chillers are versatile and can be effectively implemented in various industries and commercial buildings. Some of the most common applications include:

Data Centers: With high cooling demands, data centers can significantly benefit from heat recycling chillers. The waste heat generated during the cooling process can be used to heat office spaces, provide hot water, or even heat outdoor walkways in colder climates.

Data Center

Manufacturing Facilities: In industrial settings, heat recycling chillers can help reduce energy consumption by providing heating or hot water for processes that require high temperatures, such as drying, washing, or sterilization.

Manufacturing Factory

Hotels: Heat recycling chillers can be employed to provide cooling for guest rooms while simultaneously supplying hot water for showers, laundry, and swimming pools.


Hospitals: These facilities have a constant need for both cooling and heating, making heat recycling chillers an ideal solution. They can be used to maintain comfortable temperatures for patients and staff while providing hot water for various medical procedures and sanitation needs.



One cheese factory client in the United States implemented a heat recycling chiller system to improve its energy efficiency and reduce costs. They use the waste heat generated by the cooling process to preheat the water required for cleaning and sanitizing equipment. By utilizing waste heat for this purpose, they have reduced their natural gas consumption by an estimated 70%, resulting in substantial energy cost savings and a reduced environmental impact.

Cost Savings and Economic Benefits

Heat recycling chillers offer substantial economic advantages. By utilizing waste heat, businesses can achieve significant cost savings in several ways:

Reduced Energy Bills: The reuse of waste heat translates into lower energy consumption, which directly results in reduced energy bills for the facility.

Fewer Separate Heating Systems: Heat recycling chillers eliminate the need for additional heating systems, which can be expensive to install, operate, and maintain.

Challenges and Limitations

While heat recycling chillers offer numerous benefits, there are some challenges and limitations to consider:

Initial Investment: The upfront cost of installing a heat recycling chiller may be higher than traditional systems. However, long-term energy savings and reduced operating costs can offset the initial investment.

Maintenance Requirements: Regular maintenance is necessary to ensure optimal performance and efficiency. This includes cleaning and inspecting heat exchangers, monitoring refrigerant levels, and checking for leaks.

Balancing Cooling and Heating Demands: Heat recycling chillers are most effective when there is a consistent balance between the cooling and heating demands of the facility. In situations where the heating demand is significantly lower than the cooling demand, the full potential of waste heat recovery might not be realized.

Compatibility with Existing Systems: Retrofitting heat recycling chillers into existing facilities might require significant adjustments to the infrastructure and could potentially increase the complexity of the project.


In conclusion, heat recycling chillers offer a promising solution for businesses looking to enhance energy efficiency and sustainability. SCY Chiller, a leading chiller manufacturer, is at the forefront of this innovative technology. Our state-of-the-art heat recycling chillers are designed to capture and reuse waste heat generated during the cooling process, leading to reduced energy consumption, lower operating costs, and minimized environmental impact across various industries and commercial buildings.

Partnering with SCY Chiller ensures that your business is equipped with cutting-edge, reliable, and cost-effective cooling systems that not only meet your specific needs but also contribute to a more sustainable future. Experience the SCY Chiller difference today and unlock the full potential of heat recycling chillers for your business.

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