The dryer operates through three integrated systems: the heat exchange system, the refrigeration system, and the electrical control system. Compressed air first enters an air-to-air or air-to-water pre-cooler, where it releases some of its heat. It then moves into the air-to-refrigerant heat exchanger, where it is cooled further. Inside the evaporator, the refrigerant absorbs the remaining heat from the compressed air, lowering its temperature to around 2–5°C (dew point temperature). At this low temperature, moisture present in the air condenses into liquid form. This condensed water is separated by a moisture separator and discharged automatically through a solenoid drain valve. The now cold, dry air passes back through the air-to-air heat exchanger, where it is reheated by the incoming warm compressed air. This helps bring the dry air to a suitable temperature before it is delivered to the application.
Model | Exhaust Pressure (Mpa) | Air Flow (m³/min) | Motor Power (KW) | Size (L×W×H) mm | Outlet Size | Weight (Kg) |
---|---|---|---|---|---|---|
EPM-10A | 0.8 / 1 | 1.1 / 0.9 | 7.5 | 950×650×880 | 1/2″ | 170 |
EPM-20A | 0.8 / 1 | 2.3 / 2.0 | 15 | 1160×700×1100 | 3/4″ | 260 |
EPM-30A | 0.8 / 1 | 3.8 / 3.6 | 22 | 1200×900×1150 | 1″ | 365 |
EPM-40A | 0.8 / 1 | 5.2 / 4.8 | 30 | 1400×900×1225 | — | 460 |
EPM-50A | 0.8 / 1 | 6.5 / 5.7 | 37 | 1560×1000×1365 | 1½” | 550 |
EPM-60A | 0.8 / 1 | 7.5 / 6.8 | 45 | 1560×1000×1365 | — | 580 |
EPM-75A | 0.8 / 1 | 10.5 / 8.9 | 55 | 1800×1160×1490 | 2″ | 870 |
EPM-100A | 0.8 / 1 | 13.5 / 11.5 | 75 | 1800×1160×1490 | — | 900 |
EPM-120A | 0.8 / 1 | 16.5 / 13.7 | 90 | 2100×1400×1780 | — | 1900 |
EPM-150A | 0.8 / 1 | 20.5 / 17.8 | 110 | 2500×1450×1800 | 2½” | 2500 |
EPM-175A | 0.8 / 1 | 24 / 21.3 | 132 | 2700×1550×1800 | — | 3500 |
EPM-220A | 0.8 | 28.5 | 100 | 2700×1550×1800 | — | 3800 |
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Piping Material Features Comparison |
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Piping Features | Stainless Steel(Type 304L) | Mild Steel | Blue anodized Aluminum Alloy |
Weight (Dia 6inch, Length 6m) | 127.2 | 169.6 | 29.142 |
Anti-Corrosive | Yes | No | Yes(100%) |
Pressure drop (Dia 2 inch Length= 20m, Airflow=3 cubic metres/Minute, Pressure=10 bar) | 0.25 | 0.4 Bar | 0.1 |
Efficient Energy Use | High | Low-moderate | High( Potential Cost savings of 34%) |
Structural Durability | Very Strong | Very Strong | Strong |
High Thermal Endurance | Yes | Yes | Yes |
Installation Ease | Less Difficult | Difficult | Easy(High Flexibility and Modularity) |
Simple Installation | Approx 6 feet length per hour | Approx 6 feet length per hour | Approx 45 feet Length per hour |
Manpower and Work Hours Needed for 2″ Pipe Over 3000 Feet | Approx 600 man-hours/8 men for 2 weeks | Approx 600 man-hours/8 men for 2 weeks | About 100 man-hours with 8 workers, completed in under 2 days |
Annual Charges for Installation, Commissioning & Operation | Approx 3000 dollars | Approx 7820 dollars | Approx 1300 dollars |
Installation Cost Breakdown: Material % / Labor % | 30% / 70% | 25% / 75% | 80% / 20% |
Texture of Surface | 0.03 | 0.05 | 0.001 |
Required Specialized Tools: Welder, Threader, Groove Cutter | Yes | Yes | No |
Quality of Air | High — When needed, these pipe systems comply with ISO 8573-1:2010 air quality standards | Low( Not according to !SO 8573-2010 air quality standards) | High — These pipe systems support compliance with ISO 8573-1:2010 air quality standards when required. |
Cost Rate per Meter | Almost 2 less than Aluminum | 3 Times less than Aluminum | 163.64 Dollars |
Service Life Depends on Environment, Pipe Design, and Grade | 30 years | 40 years | 20 years |
Upfront Installation Cost | Material : 30% Labor:70% | Material : 25% Labor:75% | Material : 80% Labor:20% |
Care and Maintenance | Difficult — Rust buildup under pipes and fittings can reach machinery, requiring weekly preventive maintenance. | Difficult (Accumulation of rust under pipes and fittings which travels to machinery may require preventive maintenance every 3-4 days) | Easy — No rust buildup, with preventive maintenance needed every 4 weeks. |