After the air compressor reduces its discharge pressure, the change in air delivery is not linear: positive‑displacement units at constant speed may experience a slight increase in output, while variable‑frequency models typically reduce speed and thus decrease output…
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Slow air delivery in screw air compressors may be caused by intake blockage, oil‑separator failure, a malfunctioning minimum pressure valve, insufficient cooling, or wear of the compressor unit. This article provides a systematic troubleshooting procedure and practical maintenance…
During normal operation, variable-frequency air compressors typically do not rely on periodic unloading; instead, they maintain continuous air supply through variable-speed control. Brief unloading may occur only under extremely low load conditions or when the system is configured…
Variable-frequency air compressors dynamically match air demand by adjusting motor speed, and are widely used in manufacturing, food processing, electronics, and other industries. They offer key advantages such as energy savings, stable pressure, and extended equipment life, making…
Failure to drain an air compressor will not directly cause an explosion, but it can accelerate corrosion of the receiver tank, clog the air lines, and reduce the reliability of safety devices. Prolonged neglect may lead to structural…
This paper compares scroll compressors and screw compressors in terms of their operating principles, performance characteristics, application scenarios, maintenance requirements, and service life, helping users make an informed selection based on their specific needs—such as system size, energy…
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The difference between high-pressure water screw compressors and high-pressure oil-free screw compressors
This article explains in detail the fundamental differences between high-pressure water screw compressors and high-pressure oil-free screw compressors in terms of working principles, applicable scenarios, gas purity requirements, and maintenance key points, helping users make reasonable selections based…
This article outlines the key regulations regarding oil content in air separation cold boxes, citing GB/T 13308—2011, JB/T 13795—2020, and technical agreements from major manufacturers to clarify the oil content limits (usually ≤0.003–0.01 mg/m³) and the underlying safety…
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What is the power requirement for a screw air compressor with a capacity of 20 cubic meters per minute and a pressure of 10 kilograms?
Typical drive power for screw air compressors at an exhaust volume of 20 m³/min and a pressure of 10 kilograms (1.0 MPa) is 132–160 kW. Actual power is influenced by efficiency, inlet conditions, and system configuration; when selecting…
This paper introduces the key points of system maintenance of non-oil-water screw compressor (water lubricated air compressor) in Hangzhou, covering water quality management, waterway cleaning, key parameter monitoring and preventive maintenance cycle, emphasize the importance of localization service…