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Parallel screw compressor units are a vital component in modern industrial and commercial refrigeration systems. These units work by compressing and moving refrigerant gas in a parallel fashion to provide efficient cooling for various applications. In this article, we will explore how parallel screw compressor units work and their key components.
**Principle of Operation**.
Parallel screw compressor units operate on the principle of twin screw technology, where two helical rotors interlock and rotate within a tight tolerance to compress the refrigerant gas. The rotors are driven by a motor connected to a drive shaft, which rotates the screws in opposite directions. This movement allows the gas to move through the compressor and undergo compression, ultimately increasing its pressure and temperature.
**Key Components**.
1. **Rotors**: The heart of the parallel screw compressor unit, the rotors are designed with precision-cut helical lobes that intermesh to compress the gas. The rotors create pockets along the length of the screws, which trap and move the gas from the inlet to the discharge ports.
2. **Motor**: The motor provides the necessary power to drive the rotors and facilitate the compression process. Motors used in parallel screw compressor units are designed to deliver high torque and maintain consistent speed for optimal performance.
3. **Suction and Discharge Ports**: These ports allow the refrigerant gas to enter and exit the compressor unit. The suction port draws in the low-pressure gas from the evaporator, while the discharge port releases the high-pressure gas to the condenser for cooling.
4. **Oil System**: Parallel screw compressor units require lubrication to minimize friction and wear between the moving parts. An oil injection system is integrated into the compressor to ensure smooth operation of the rotors and extend the lifespan of the unit.
**Working Process**.
As the parallel screw compressor unit operates, the rotors rotate and create a sealed chamber where the gas is compressed. The gas enters the compressor through the suction port at a low pressure and temperature. As the rotors interlock and move the gas along the screws, the volume of the chamber decreases, leading to compression and an increase in pressure and temperature.
The compressed gas is then discharged through the outlet port to the condenser, where it releases heat and undergoes a phase change from gas to liquid. The liquid refrigerant is then sent to the evaporator to absorb heat from the surrounding environment and complete the cooling cycle.
**Advantages of Parallel Screw Compressor Units**.
1. High Efficiency: Parallel screw compressor units are known for their energy efficiency and reliability in industrial refrigeration applications.
2. Low Maintenance: These units have fewer moving parts compared to other compressor types, reducing the need for frequent maintenance and repairs.
3. Wide Capacity Range: Parallel screw compressor units are available in various sizes and configurations to meet the cooling requirements of different industries.
In conclusion, parallel screw compressor units play a crucial role in maintaining optimal temperatures in industrial processes and commercial facilities. Understanding how these units work and their key components can help in selecting the right system for specific cooling needs.
For more information on parallel screw compressor units or to explore our range of industrial refrigeration solutions, please contact us.
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