Compressor selection
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Our company plans to install an acrylic compressor to provide cooling capacity for the low-temperature methanol washing process. We are not sure whether to choose a screw-type or a centrifugal-type compressor; please share the advantages and disadvantages of each type of compressor.
Why? Can you explain the reason?
Not necessarily; for centrifugal pumps, the outlet valve must be completely closed. Prevent additional work from being done. For screw-type pumps, the outlet valve must be fully open. Prevent the motor from being damaged by excessive current. As for the specific flow rates and pressure issues, I also need the experts’ guidance.
The basic criteria for selecting a compressor are cost-effectiveness, reliability, and safety. I. Determination of pressure: 1. The higher the pressure, the greater the power consumption. The pressure loss caused by the diameter and length of the piping must be taken into account, in addition to the minimum operating pressure. 2. List the operating pressures for various machine models; if the differences in operating pressures are too large, it is necessary to purchase air compressors with different pressure levels or use pressure boosters. II. Selection of model: 1. It is advisable to calculate the total actual air volume in use and add a margin. 2. The displacement values listed by our company have been measured using international standard airflow testing equipment. 3. Pay attention to the energy consumption ratio to save electricity. III. Location: 1. It must be a spacious area with good lighting to facilitate operation and maintenance. 2. A location with low temperatures, little dust, clean air, and good ventilation; the room temperature should be below 40°C. IV. Cooling Water and Water Quality 1. The temperature of the cold water should be low, with the use of a cooling tower for cooling. 2. Attention should be paid to the pH value during cooling; it should be maintained around pH 7 to prevent scaling and reduce cleaning costs. 3. Attention should be paid to the cooling effect of the cooler; generally, the outlet temperature of compressed air should be around 40 ℃. V. Quality and requirements of compressed air: Compressed air contains a large amount of moisture at 100% relative humidity, which causes significant damage to precision instruments, pneumatic tools, pneumatic equipment, valves, instruments, pipelines, etc. Moisture leads to rusting, blockages in instruments, reduced quality of the finished products, damage to equipment, and substantial costs associated with repairs and maintenance. Therefore, it is indeed necessary to install a compressed air purification system.
Model selection: 1. It is advisable to calculate the total actual air volume in use and add a margin. 2. The displacement values listed by our company have been measured using international standard airflow testing equipment. 3. Pay attention to the energy consumption ratio to save electricity.
That’s really well said; I’ve learned something