Energy saving methods for screw air compressors

Realizing energy conservation and emission reduction is not only a national policy in China, but also the responsibility of every enterprise. Air compressors are applied in various industries and are the basic universal equipment for industrial modernization. They are also high power consuming equipment. According to statistics, the power consumption of air compressors accounts for about 50% of the electricity consumption per unit of use. How to save electricity and energy is a topic that most air compressor users cannot avoid. In response to this situation, this article mainly introduces several common energy-saving methods for screw air compressors:

Reduce pressure loss

The air circuit system consists of an air filter, intake valve, exhaust valve, cooler, etc., which can deliver compressed air to the gas consuming equipment;

To reduce pressure loss, the first step is to minimize the flow resistance and pressure loss of the gas pipeline system while meeting the process requirements, such as installing fewer valves and minimizing the length of gas pipelines. Secondly, it is necessary to use a large-diameter gas pipeline system and a low-speed air supply method;

Reduce internal and external leakage of equipment and reduce clearance volume;

Using high-quality pneumatic components, the intake and exhaust valves should have good sealing performance and low resistance.

Using variable frequency air compressors

With the development and widespread application of permanent magnet frequency conversion technology, it has replaced the original frequency converter technology and achieved significant energy-saving effects. The permanent magnet variable frequency air compressor saves more than 30% energy compared to ordinary (power frequency) air compressors, has a compact structure, low vibration, and low noise, truly achieving constant pressure gas supply. The frequency control range has been increased from 50% -100% to 25% -100%, and the frequency control range has been greatly improved. Improve work efficiency, reduce energy consumption, and create better economic benefits for the enterprise.

Correct pressure use

The commonly used pressures for screw air compressors are 0.7Mpa and 0.8Mpa, with low pressures below 0.4Mpa and high pressures above 10Mpa. Different industries have different requirements and pressures for the use of air compressors, and selection should be based on actual operating conditions. Every 0.1Mpa increase in pressure during use consumes approximately 7% more electrical energy.

Control pipeline leakage

By effectively addressing the issue of pipeline leakage, significant energy-saving benefits can be achieved. 10% of the electrical energy consumed by the air compressor is converted into compressed air, while 90% is converted into thermal energy, indicating that compressed air is 10 times more expensive than electricity. However, the user did not pay attention to this point and did not pay attention to the leakage on the pipeline. The first occurrence on the pipeline was hidden leakage, followed by visible leakage. A small hole in the gas pipeline, if left untreated, can result in significant losses.

Utilize waste heat

As we all know, air compressors are power consumers. During use, heat is inevitably generated. If these heat cannot be utilized, it will cause great waste of energy. Nowadays, more and more production enterprises are paying attention to this and installing waste heat recovery devices for air compressors. This energy can be used for heating, heating bathrooms, providing thermal energy for canteens, etc. This can effectively prevent energy waste and bring considerable benefits to enterprises and institutions.

The above summary is for reference only.

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JOY MACHINERY oil-free air compressor series is widely used in the food and beverage processing industry due to its clean air source and continuous and stable gas transmission. If you have any needs, please contact us! JOY Machinery (Shanghai) Co., Ltd. has a professional design team with rich experience and welcomes customization. Diversified products can meet most applications and meet your one-stop shopping needs. The air compressor series includes power frequency screw air compressors, variable frequency screw air compressors, permanent magnet variable frequency screw air compressors, two-stage compression screw air compressors, integrated screw air compressors, laser cutting air compressors, medium and high pressure air compressors. Air compressors, oil-free water-lubricated screw air compressors (special oil-free screw air compressors for the medical industry), diesel-moving screw air compressors, electric-moving screw air compressors and other products.

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