Air Compression: The compressed air enters the refrigeration dryer at a high temperature due to the compression process. The air may also contain moisture and oil particles.
Pre-Cooling: The hot compressed air is first pre-cooled by passing through a heat exchanger, which uses the outgoing cooled air to reduce its temperature. This process helps in energy efficiency by recovering some of the cold from the exiting air.
Cooling and Condensation: The pre-cooled air then enters the refrigerant-based cooling system, where the air is further cooled to a point below its dew point. This causes the moisture in the compressed air to condense into water droplets.
Water Separation: The condensed water is separated from the air using a moisture separator. This water is then automatically drained from the system to ensure dry air exits the unit.
Reheat and Delivery: After moisture removal, the cooled air is reheated slightly as it passes back through the heat exchanger. This ensures that the delivered compressed air is dry but not too cold, which helps prevent condensation in downstream equipment.
| Parameter | RSLF-12-HP to RSLF-150-HP | RSLF-200-HP to RSLF-800-HP |
| Capacity | 1.2~80 m3/min | 1.2~80 m3/min |
| Max. Working Pressure | ≤4.5 MPa (45 barg) | ≤4.5 MPa (45 barg) |
| Max. Inlet Temperature | 60℃ | 60℃ |
| Max. Ambient Temperature | 50℃ | 50℃ |
| Min. Ambient Temperature | 5℃ | 5℃ |
| Max. Cooling Water Temperature | 35℃ | 35℃ |
| Cooling Type | Air-cooled | Air-cooled for RSLF-12-HP to RSLF-150-HP |
| Water-cooled from RSLF-150-HP and above | Water-cooled | |
| Power Supply | 220V/1Ph/50Hz/60Hz | 380V/3Ph/50Hz/60Hz |
| Refrigerant | R134a/R407C | R134a/R407C |
| Rated Condition | ||
| Rated Working Pressure | 4.0 MPa | 4.0 MPa |
| Inlet Temperature | 38℃ | 38℃ |
| Ambient Temperature | 38℃ | 38℃ |
| Cooling Water Temperature | 32℃ | 32℃ |
| Pressure Dew Point (PDP) | 3-10℃ | 3-10℃ |
Rated Conditions
Working pressure: 4.0Mpag / 580psig
Inlet temp: 38℃ / 100 ℉
Ambient temp: 38 ℃ / 100 ℉
Working Range
Max. working pressure: 4.5Mpag / 653psig
Max. inlet temperature: 60℃ / 140 ℉
Max. ambient temperature: 50℃ / 122 ℉
Min. ambient temperature: 5℃ / 41 ℉
| Technical Specification | |||||||||
| Model | Air Connection | Capacity | Power Supply | Absorbed Power (kW) |
Dimension mm | Weight (kg) |
|||
| m³/min | CFM | V/Ph/Hz | L | W | H | ||||
| RSLF-12-HP | Rc1/2" | 1.2 | 42 | 230/1/50 | 0.26 | 600 | 310 | 500 | 35 |
| RSLF-15-HP | Rc1/2" | 1.5 | 53 | 230/1/50 | 0.28 | 600 | 310 | 500 | 35 |
| RSLF-18-HP | Rc1/2" | 1.8 | 64 | 230/1/50 | 0.3 | 600 | 310 | 500 | 35 |
| RSLF-24-HP | Rc3/4" | 2.4 | 85 | 230/1/50 | 0.46 | 750 | 360 | 550 | 50 |
| RSLF-30-HP | Rc3/4" | 3 | 106 | 230/1/50 | 0.5 | 750 | 360 | 550 | 50 |
| RSLF-36-HP | Rc3/4" | 3.6 | 127 | 230/1/50 | 0.53 | 750 | 360 | 550 | 55 |
| RSLF-40-HP | Rc3/4" | 4 | 141 | 230/1/50 | 0.55 | 750 | 360 | 550 | 55 |
| RSLF-60-HP | Rc1-1/4" | 6 | 212 | 230/1/50 | 0.8 | 750 | 550 | 880 | 80 |
| RSLF-80-HP | Rc1-1/4" | 8 | 282 | 230/1/50 | 0.85 | 750 | 550 | 880 | 80 |
| RSLF-90-HP | Rc1-1/4" | 9 | 318 | 230/1/50 | 0.9 | 750 | 550 | 880 | 80 |
| RSLF-100-HP | Rc1-1/4" | 10 | 353 | 230/1/50 | 1.1 | 750 | 550 | 880 | 80 |
| RSLF-120-HP | Rc1-1/4" | 12 | 424 | 230/1/50 | 1.22 | 750 | 550 | 880 | 80 |
| RSLF-150-HP | Rc1-1/4" | 15 | 530 | 230/1/50 | 2.1 | 1100 | 860 | 1200 | 150 |
| RSLF-200-HP | Rc1-1/4" | 20 | 706 | 230/1/50 | 2.3 | 1100 | 860 | 1200 | 150 |
| RSLF-250-HP | Rc2-1/2" | 25 | 883 | 400/3/50 | 2.8 | 1100 | 900 | 1550 | 270 |
| RSLF-300-HP | Rc2-1/2" | 30 | 1059 | 400/3/50 | 2.9 | 1100 | 900 | 1550 | 270 |
| RSLF-350-HP | Rc2-1/2" | 35 | 1236 | 400/3/50 | 3.1 | 1100 | 900 | 1550 | 300 |
| RSLF-400-HP | Rc2-1/2" | 40 | 1412 | 400/3/50 | 4.2 | 1100 | 900 | 1550 | 350 |
| RSLF-500-HP | Rc2-1/2" | 50 | 1766 | 400/3/50 | 4.56 | 1100 | 900 | 1550 | 470 |
| RSLF-600-HP | DN80 | 60 | 2119 | 400/3/50 | 5.6 | 1450 | 1130 | 1650 | 550 |
| RSLF-700-HP | DN80 | 70 | 2472 | 400/3/50 | 5.8 | 1450 | 1130 | 1650 | 570 |
| RSLF-800-HP | DN80 | 80 | 2825 | 400/3/50 | 5.94 | 1450 | 1130 | 1650 | 600 |
FAQ:
1.Why does compressed air enter the refrigeration dryer at a high temperature?
The compressed air is heated during the compression process due to the increased pressure, which raises its temperature. This heat needs to be managed to prevent damage to equipment and to efficiently remove moisture and contaminants from the compressed air.
2.What role does the heat exchanger play in the pre-cooling process of compressed air?
The heat exchanger reduces the temperature of the hot compressed air by using the cold outgoing air from the system. This process helps improve energy efficiency by recovering some of the cold and reducing the workload on the refrigeration system.
3.How is moisture removed from compressed air during the cooling and condensation stage?
The pre-cooled air enters the refrigerant-based cooling system, where it is cooled to a temperature below its dew point. This causes the moisture in the air to condense into water droplets, which can then be separated and drained.
4.What happens to the water after it is condensed from the compressed air?
Once the moisture condenses into water droplets, it is separated from the air using a moisture separator. The water is then automatically drained from the system to prevent accumulation and ensure that only dry air is delivered to downstream equipment.
5.Why is the cooled air reheated slightly before delivery, and what are the benefits?
The reheating process ensures that the dry air is not too cold, preventing condensation in downstream equipment. By passing the air back through the heat exchanger, the system balances the temperature, ensuring that the compressed air remains dry and suitable for various industrial applications.
6.What is the main purpose of using compressed air refrigeration systems in industrial applications?
The primary goal of compressed air refrigeration is to remove moisture and contaminants from compressed air, improving efficiency and preventing damage to equipment. By ensuring that the air is dry and clean, these systems help maintain optimal performance in industries such as manufacturing, automotive, and pharmaceuticals.
