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GA-HFB Refrigerated Air Dryer - Efficient Dry Compressed Air from China Suppliers & Factory
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GA-HFB Refrigerated Air Dryer - Efficient Dry Compressed Air from China Suppliers & Factory

The refrigerating dryer is designed to utilize the low temperature of the evaporator within the refrigeration system. This process effectively lowers the temperature of compressed air, allowing moisture to condense and be removed to achieve a high-quality dry compressed air source. However, it's important to note that cooling the compressed air alone may not eliminate all water. Due to the rapid flow of compressed air, some condensed water may be carried out by the airflow, which can lead to increased moisture levels at the service end. For businesses in need of reliable solutions, sourcing from reputable China suppliers and factories ensures that you receive top-quality refrigerating dryers tailored to meet your needs. Choose our products for efficient moisture control and enhanced performance in your compressed air systems

    Functional Characteristics

    The refrigerating dryer uses the low temperature of the evaporator of the refrigerating system, let's lower the temperature of the compressed air, and then condense the water out, to obtain a dry compressed air source; but cooling the compressed air doesn't necessarily mean the water will be expelled, because a lot of condensed water will be taken away from the refrigerated dryer due to the rapid flow of compressed air, resulting in the phenomenon of excessive water content at the service end.

    GA series air-cooled refrigerating dryer is a new machine developed to solve this problem. The main feature is that the horizontal evaporator is designed with an upright differential configuration. At the bottom of the evaporator is equipped with a refrigerant high-pressure secondary condensation device, this careful design not only makes the cooling system load more stable, the principle of gravity is also used to make the condensed water more difficult to be carried away from the evaporator by the fast-moving compressed air due to the relationship between gravity, so that the condensed water can be completely discharged.

    Correct Method of Selecting a Cold Dryer

    Under different working conditions, the air volume of all kinds of cold drying machines will be different. To choose a suitable cold drying machine, five key factors must be considered:

    Compressed Air Flow Rate
    Pressure
    Inlet Temperature
    Ambient Temperature
    Required Pressure Dew Point

    Selection Example:

    If the nameplate of the air compressor indicates:

    • Exhaust volume: 5.2 m³/min
    • Exhaust pressure: 0.8 MPa
    • Maximum exhaust temperature: 50℃
    • Ambient temperature of the machine room: 38℃
    • Target pressure dew point: 10℃
    Calculation & Model Selection:
    Processing Capacity = 5.2 Nm³/min ÷ 0.75 ÷ 1.12 ÷ 1.0 = 6.2 Nm³/min

    Based on this result, the cold-drying model to be selected is GA-50HFB.

    Frequently Asked Questions (FAQ)

    How does a refrigerating dryer work?
    It uses the low temperature of the refrigerating system's evaporator to lower the temperature of the compressed air. This process condenses the moisture out, allowing you to obtain a dry compressed air source.
    Why does water sometimes carry over to the service end in standard dryers?
    Simply cooling the air is not always enough because the rapid flow of compressed air can physically carry condensed water droplets out of the dryer before they can be discharged, resulting in excess moisture at the end-use point.
    How does the GA series solve the water carryover problem?
    The GA series features a horizontal evaporator with an upright differential configuration and a bottom-mounted refrigerant high-pressure secondary condensation device. This design uses gravity to prevent condensed water from being swept away by the fast-moving air, ensuring complete water discharge.
    What factors must be considered when selecting a cold dryer?
    You must consider five key working condition factors: the flow rate of the compressed air, system pressure, inlet temperature, ambient temperature of the installation room, and your target pressure dew point.
    Why does the processing capacity of a dryer change under different conditions?
    Varying working conditions (like higher ambient or inlet temperatures, or lower system pressures) affect the cooling efficiency and moisture load. Correction factors must be applied to the air compressor's nominal output to select a dryer with adequate real-world processing capacity.