Refrigeration air dryers remove moisture from compressed air by cooling it to roughly 3`C (37`F), causing water to condense and drain away. They utilize a refrigerant circuit, heat exchanger, and separator to protect equipment from corrosion. Ideal for general industrial applications, they achieve a pressure dew point of Class 4 or higher (+3`C to +10`C), ensuring dry, reliable air. Key Details and Components Working Principle: Warm, saturated air enters an air-to-air heat exchanger, is pre-cooled, then cooled further in an air-to-refrigerant evaporator. Water condenses, is trapped in a separator, and removed by an auto-drain valve. Finally, the dry air is reheated to prevent pipe sweating. Key Components: Refrigerant compressor, condenser, expansion valve, evaporator, air-to-air heat exchanger, moisture separator, and automatic drain. Types: Non-Cycling: Constantly running, which is cheaper initially but less efficient. Cycling/VSD: Cycles on/off or adjusts speed to match load, significantly saving energy. Performance: Achieves a pressure dew point of typically + 3`C to 10`C + (37`F to 10`F). Cooling Methods: Available in air-cooled (most common) or water-cooled variants. Applications & Advantages Benefits: Prevents corrosion, tool damage, and product contamination. Reliable, affordable, and requires minimal maintenance. Common Uses: General manufacturing, pneumatic tools, workshop air, and painting applications. Mellcon Engineers Operational Considerations Limitations: Cannot reach the ultra-low dew points needed for specialized, sub-freezing applications (which require desiccant dryers). Maintenance: Regularly check auto-drains and clean condenser coils. Important Specifications Inlet Temperature: Usually designed for around 35`C (95`F) or higher. Pressure: Standard operation typically around 7 bar(e) / 102 psig.

Compressors with two stages have two compression chambers on each side of the piston. Water is typically pumped continuously through the engine to cool it. Compressors with two stages have a more effective cooling system. In two-stage compressors, the air is compressed on both sides of the piston using three cylinders while the other side handles the functionality: the air is sucked in as the piston moves down, and the air is compressed as the piston rises. Two-stage compressors are preferable for factories and workshops than for private projects because of their endurance. METRO Engineering Equipments has offers a distinct range of three-cylinder variants such as TCH 18, TCH 19, TCH 20, and TCH 21 with different RPM, displacement, and capacities. METRO ensures prime quality two-stage double-cylinder unit air compressors with a long-lasting design and heavy-duty endurance for a variety of industrial applications. Two-stage, three-cylinder unit air compressor characteristics:- Makes use of three-cylinders The revolutions per minute range from 700 to 1200. The displacement ranges between 25.0 and 48.0. The power range of the motor is 10.0–20.0 horsepower. Tank capacities range from 425 to 700 litres.

The air is compressed on one side of the piston using a three-cylinder in single-stage compressors, while the other side handles the functionality: as the piston goes down, the air is sucked in, and as it moves up, the air is compressed. METRO Engineering Equipments has offers a distinct range of three-cylinder variants such as THC 18, TCH 19, TCH 20, and TCH 21 with different RPM, displacement, and capacities. METRO ensures prime quality single-stage three-cylinder unit air compressors with a long-lasting design and heavy-duty endurance for a variety of industrial applications. The air is compressed on one side of the piston using a three-cylinder in single-stage compressors, while the other side handles the functionality: as the piston goes down, the air is sucked in, and as it moves up, the air is compressed. METRO Engineering Equipments has offers a distinct range of three-cylinder variants such as THC 18, TCH 19, TCH 20, and TCH 21 with different RPM, displacement, and capacities. METRO ensures prime quality single-stage three-cylinder unit air compressors with a long-lasting design and heavy-duty endurance for a variety of industrial applications. Single-stage, three-cylinder unit air compressor characteristics:- Makes use of three-cylinders The revolutions per minute range from 700 to 1200. The displacement ranges between 35.0 and 70.0. The power range of the motor is 10.0–20.0 horsepower. Tank capacities range from 425 to 700 litres.