Why choose a Variable Speed Drive Technology Air Compressors（VSD）?
Typically, one-fifth of a factory's electricity bill comes from the production of compressed air. Most factories are trying to cut costs. For example, 8-10% of all electricity generated in China is produced using compressed air, some of which is wasted during the producing.
By replacing existing rotary screw or piston machines with variable speed drive compressors, significant savings in electricity costs can be realized. Because of this, many governments, including those of China, the United States and the United Kingdom, are pushing industries to adopt this technology in the hope of reducing energy waste. Governments offer various incentives, such as tax rebates or interest-free loans, to encourage factories and companies to upgrade their air compressors.
How it works
Since the rotational speed of the compressor motor and the actual power consumption of the compressor are in a one-to-one relationship, lowering the motor speed will reduce the actual power consumption Variable Speed Drive Technology （VSD）air compressors use pressure sensors to instantly sense the actual air pressure and air consumption in the system.
Through the precise cooperation of electrical control and frequency conversion control, the motor speed (i.e., output power) is instantly controlled without changing the motor torque (i.e., the ability to drag the load) of the air compressor. By changing the compressor speed, the compressor responds to the change of the system pressure and maintains the stable system pressure (set value) to realize the output of high-quality pressurized air according to the demand.
When the system air consumption decreases, the compressed air provided by the compressor is larger than the system consumption, the inverter compressor will lower the speed and reduce the output compressed air volume; on the contrary, it will increase the motor speed to increase the compressed air volume in order to maintain a stable system pressure value. More to learn difference between VSD and common air compressors .
How to choose VSD Air compressor correctly?
1. Stability
In the production process, stability plays an important role in the air compressor for the compressor is often full load for a whole day. An Variable Speed Drive Technology （VSD）air compressor with unstable air production can cause a lot of trouble, so when we purchase air compressor, the first criterion is the stability of the air compressor. If you are choose some brands, the article may help you to understand.
2. Gas production
Some enterprises need a very high quality of gas for produce, such as the pharmaceutical industry, basically need the gas is 100% oil-free. In this case, if they may better purchase the well-known machine, if the requirements are not high, according to the use of other circumstances, oil free VSD air compressor in the production is very good choice, because the VSD air compressor has a very prominent feature is tracking the gas production, and at the same time the quality of the gas produced is also very impressive.Learn more about the Oil free air compressors products list click here.
3. Power consumption
Air compressor, a very power-consuming equipment, is usually running around the clock . The purchase price of the air compressor is one of the elements to consider, but considering the final electricity expenditure is the other must to think element. The Variable Speed Drive Technology air compressor is definitely much lower than the ordinary air compressor in power consumption. The extra cost of VSD air compressor is just the one-off purchase cost, but if you factor in the cost of electricity, you can really do the math. The general energy savings of variable frequency air compressors are very objective. For example, one professional variable frequency air compressor, its power saving rate is as high as 40% in China. Usually within a year or less can recover the difference. Therefore, when choosing an air compressor, choosing an VSD air compressor is really the best solution to the problem of power consumption.
4. Price Imported or Domestic?
Domestic ones are cheap and imported ones are expensive. Price is not a very important factor in many cases. The key is still to look at the air production, stability, and energy saving performance, these factors should be considered.
5. After-sales service
Choosing a stable and well-known brand is more reassuring, and the after-sales service can really give you peace of mind. The purchase and replacement of consumables parts like air filter and oil filters as well as timely response to technical questions and other details need to be taken into account.
We will share you some ideas about as a textile factory director how to purchase air compressor equipment in the next article.
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