Micro Heat Desiccant Air Dryer - SRD Series
Micro heat desiccant air dryers are designed for efficient moisture removal from compressed air through pressure swing adsorption (PSA) combined with micro-heated regeneration. This compressed air drying system integrates the advantages of both heatless and heated regeneration, utilizing low-level heating for regeneration air reduces purge air consumption, enhances regeneration effectiveness, and extends the tower switching cycle. Under standard operating conditions, these dryers achieve pressure dew points as low as -40°C, with the capability to reach -70°C for critical applications.
Ideal for industries requiring high-purity, oil-free, and moisture-free compressed air, especially suitable for cold climates such as northern regions and environments where ambient temperatures fall below 0°C.
The system operates with a twin-tower configuration where one tower adsorbs moisture from compressed air under pressure. Simultaneously, a portion of dried compressed air is used for regeneration, with micro-heating applied to enhance efficiency while maintaining low energy consumption. Towers alternate automatically after a set cycle, ensuring a continuous supply of dry air.
- Compressed air inlet temperature: 2~45℃
- Compressed air pressure: 0.7MPa, Max.1.0MPa (or customizable)
- Pressure dew point: -20℃ (-40℃~-70℃ customizable)
- Oil content of inlet air: 0.08ppm (0.1mg/m³)
- Solid particle size: ≤60µm
- Average regenerative air flow: 5%~8% of rated air flow
- Adsorbent desiccants: activated alumina (or molecular sieve)
- Pressure drop: ≤0.025MPa (at 0.7MPa inlet pressure)
- Regeneration method: micro heat
- Working mode: automatic switch between the two towers (30min/60min cycle mode), continuous operation
- Control method: 30~60min cycle adjustable
- Installation: indoor, allowing for installation without foundation
| Model | Max. air flow rate (m³/min) | Power supply | Input power (kW) | Air pipe connection | Total weight (kg) | Dimensions (L×W×H) (mm) |
| 1.2 | 220V/50Hz | 1.2 | RC1" | 135 | 670×450×1305 | |
| 2.4 | 220V/50Hz | 1.2 | RC1" | 170 | 670×530×1765 | |
| 3.8 | 220V/50Hz | 1.2 | RC1" | 240 | 850×510×1450 | |
| 6.5 | 220V/50Hz | 2.2 | RC1-1/2" | 285 | 1000×700×1700 | |
| 8.5 | 220V/50Hz | 2.2 | RC2" | 255 | 1100×760×2050 | |
| 11.5 | 380V/50HZ | 3.2 | RC2" | 526 | 1150×850×2173 | |
| 13.5 | 380V/50HZ | 3.2 | RC2" | 605 | 1240×780×2283 | |
| 17 | 380V/50HZ | 4.7 | DN65 | 712 | 1200×860×2480 | |
| 23 | 380V/50HZ | 6.2 | DN80 | 848 | 1400×880×2510 | |
| 27 | 380V/50HZ | 7.7 | DN80 | 1150 | 1500×940×2450 | |
| 34 | 380V/50HZ | 9.2 | DN80 | 1328 | 1700×985×2410 | |
| 45 | 380V/50HZ | 12.2 | DN100 | 1674 | 1960×1130×2600 | |
| 55 | 380V/50HZ | 15.2 | DN100 | 2100 | 2010×1130×2670 | |
| 65 | 380V/50HZ | 18 | DN125 | 2707 | 2160×1470×2705 | |
| 85 | 380V/50HZ | 24 | DN125 | 3573 | 2420×1400×2860 | |
| 110 | 380V/50HZ | 30 | DN150 | 4639 | 2500×1650×2800 | |
| 130 | 380V/50HZ | 36 | DN150 | 5100 | 2650×1650×2800 | |
| 155 | 380V/50HZ | 45 | DN200 | 5586 | 2800×1800×2900 | |
| Technical data available on request | ||||||
- Environmentally friendly
Utilizes R134a and R410A refrigerants compliant with the Montreal Protocol, ensuring zero ozone depletion potential and meeting global environmental standards.
- Enhanced regeneration system
Equipped with high-quality stainless steel finned U-shaped heating elements, ensuring uniform heat distribution, high heat transfer efficiency, and long-term, reliable operation without frequent maintenance.
- Superior dew point performance
Consistently achieves deep drying with dew points as low as -70°C, supporting precision applications across sensitive industries.
- Energy-efficient design
By combining micro-heated regeneration with pressure swing adsorption, the system reduces regeneration air consumption while improving drying efficiency and extending adsorbent service life.
- Continuous operation
Automatic tower switching ensures a steady, uninterrupted supply of clean and dry compressed air for demanding operational environments.
