How Does Oxidation Chiller Manufacturer and Supplier Work?

Understanding Oxidation Chillers

An oxidation chiller is a specialized cooling system designed to regulate temperatures in oxidation processes, which are common in chemical and industrial applications. These chillers are crucial in maintaining optimal operating temperatures during reactions where materials are exposed to oxygen or other oxidizing agents. By controlling the heat generated during these reactions, oxidation chillers ensure safety, efficiency, and product quality in various manufacturing environments.

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How Oxidation Chillers Work

Oxidation chillers operate by circulating a cooling medium, such as water or a refrigerant, through a closed system. As oxidation reactions produce heat, the chiller absorbs this excess heat and dissipates it through the cooling medium. The system ensures that the reaction remains stable and does not exceed the critical temperature, which could lead to overheating, equipment damage, or compromised product quality.

Applications of Oxidation Chillers

Oxidation chillers are widely used in industries such as petrochemicals, pharmaceuticals, and food processing. In the petrochemical industry, they help regulate temperatures during the production of plastics, resins, and other materials that require controlled oxidation. In the pharmaceutical sector, oxidation chillers maintain the required conditions for chemical synthesis and drug manufacturing. They are also employed in food processing to preserve the quality of products exposed to oxygen during treatment.

Benefits of Using an Oxidation Chiller

The use of an oxidation chiller offers several advantages, including enhanced safety, improved product quality, and increased process efficiency. By maintaining precise temperature control, the chiller prevents overheating, which could result in hazardous reactions or equipment failures. Additionally, stable temperatures ensure consistent product quality, avoiding fluctuations that can negatively affect material properties. Oxidation chillers also contribute to energy efficiency by optimizing the cooling process and reducing the overall energy consumption of the system.

Choosing the Right Oxidation Chiller

Selecting the appropriate oxidation chiller depends on factors such as the size of the oxidation process, the cooling capacity required, and the specific environmental conditions. It is essential to work with a reliable supplier to ensure that the chiller meets the operational needs of your industry. Proper maintenance and servicing are also crucial to extend the lifespan of the equipment and ensure optimal performance over time.

Conclusion

A chiller or chilled water system is a type of refrigeration system that uses water as a secondary refrigerant. They are used in larger and more complex heating, ventilation, air conditioning and refrigeration (HVACR) applications. Typical applications for chillers are listed below.

ㆍDistrict cooling

ㆍCentral air conditioning

ㆍHydroponics

ㆍFood and beverage processing

ㆍPharmaceutical and medical

ㆍCold Storage

ㆍThermal Energy Storage (TES) systems

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ㆍMachining, waterjet cutting, laser cutting, welding, etc.

ㆍPlastic processing   

Water Cooled Screw Chiller

As opposed to chillers, direct expansion (DX) refrigeration systems cool air directly from the room or enclosed space without the use of secondary refrigerants. The DX type is more suitable for smaller applications, such as residential space cooling and small freezers and refrigeration units.

Principle of operation

Chiller systems consist of two main loops or circuits. These are the refrigeration circuit and the chilled water circuit. The refrigeration circuit is the subsystem that provides the cooling. This is where the thermodynamic processes take place. The chilled water circuit, on the other hand, is a distribution system where the chilled water is supplied to the consumer unit. The processes involved in this system are mainly heat transfer.

Vapour compression cycle

The refrigeration circuit works on the principle of a vapour compression refrigeration cycle. In this cycle, a chemical substance called refrigerant is alternately changed from liquid to gas and back again from gas to liquid by means of a heat exchanger. In addition to changing the phase of the refrigerant, the compressor and expansion valve are used to pressurise and depressurise the fluid. The steps of a typical vapour compression cycle are explained in detail below.

Air Cooled Screw Chiller

Compression

At the start of this part of the cycle, the refrigerant is in a low-pressure vapour phase at the same temperature as the ambient air. It carries with it the heat absorbed from the evaporator.

The compressor pressurises the vaporised refrigerant and discharges it to the high-pressure side of the system. At this pressure, the temperature of the refrigerant becomes higher than the temperature of the surrounding air or ambient.

To increase the pressure of the refrigerant, mechanical energy is consumed. The compressor uses the shaft power provided by the electric motor to increase the pressure of the vaporised refrigerant. The power input to the system occurs in this step.

Condensation

The condenser is the high-pressure side of the refrigeration unit. It is a heat exchanger that is used to transfer heat from the refrigerant to the environment. Heat transfer occurs because of the thermal gradient in the temperature difference between the refrigerant and the environment. The heat absorbed from the evaporator and the heat generated by the compressor is discharged into the environment.

The environment acts as a heat absorber and absorbs the heat discharged from the system. This heat sink can be outdoor air for air-cooled chillers and water for water-cooled chillers.

As the refrigerant cools in the condenser unit, it returns to its liquid state. This is because, at this pressure, the saturation temperature of the refrigerant is higher or almost the same as its current temperature. The saturation temperature is the point at which a substance begins to vaporise or liquefy when the temperature is raised or lowered further. It is an inherent characteristic of refrigerants.

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