Refrigerated Air Dryer

Operating Principle

1. Pre-cooling stage: The hot and humid compressed air discharged from the air compressor first enters the air-to-air heat exchanger, where it exchanges heat with the already dried low-temperature air, achieving pre-cooling.
2. Refrigeration stage: The pre-cooled air then enters the air-to-refrigerant heat exchanger, where the refrigerant’s circulation refrigeration effect further lowers the air temperature below the dew point temperature (usually 0°C – 8°C).
3. Condensation and drainage stage: When the air temperature drops below the dew point temperature, the water vapor in the air will condense into liquid water, which is discharged from the equipment through the automatic drain, thus achieving the dehumidification function.
4. Re-heating stage: The dry and low-temperature air then passes through the air-to-air heat exchanger again, exchanging heat with the untreated high-temperature air. After the temperature rises, it is output to prevent condensation on the outer walls of the pipes.

1. Efficient Drying: Through refrigeration technology, it can effectively remove moisture from compressed air, ensuring the dew point temperature is lower than the set value. • The dried air can be used for various industrial applications, preventing equipment from getting damp and corroded.
2. Energy Saving and Environmental Protection: Utilizing an efficient refrigeration system, it has low energy consumption and low operating costs. • Complies with environmental protection requirements, reducing the impact on the environment.
3. Automatic Drainage: Equipped with an automatic drain device, no manual intervention is required, and maintenance is simple. • Automatically discharges condensate water to prevent water accumulation and pipe blockage.
4. Intelligent Control: With a control panel, it can monitor the operating status of the equipment in real time and has a fault alarm function. • Sensors monitor parameters such as temperature and pressure to ensure the equipment operates normally.
5. Compact Structure: Designed rationally, it has a small占地面积， facilitating installation and maintenance. • Suitable for various industrial environments， easy to integrate into existing systems.
6. Strong Adaptability: Suitable for various industrial environments， effectively protecting pneumatic equipment and extending its service life. • Can be customized according to specific needs to meet the special requirements of different customers.

1. Refrigeration System:
• Compressor: Provides the power for refrigeration and compresses the refrigerant.
• Condenser: Cools the high-temperature and high-pressure refrigerant gas into a liquid state.
• Evaporator: The refrigerant evaporates here to absorb heat and lower the air temperature.
• Expansion Valve: Controls the flow of refrigerant and regulates the refrigeration effect.
2. Heat Exchange System:
• Air-to-Air Heat Exchanger: Achieves pre-cooling and reheating functions.
• Air-to-Refrigerant Heat Exchanger: Realizes the refrigeration process.
3. Drainage System:
• Auto Drain: Automatically discharges the condensate water to prevent water accumulation.
4. Electrical Control System:
• Control Panel: Used for starting, stopping, parameter setting, and fault alarm of the equipment.
• Sensors: Monitor parameters such as temperature and pressure to ensure the normal operation of the equipment.

• Routine Maintenance: For the best performance and longest life expectancy of the compressor, services should be scheduled from time to time.
• Monitor Operating Conditions: Pressure levels and air quality have to meet specified criteria to protect the equipment and achieve the best result.
• Safe Installation: Various installation procedures should be followed to maximize the safety of the equipment as well as enhance the efficiency of the equipment.