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The influence of air humidity on air compressor

Author : Runningway

Update time : 2021-11-01 16:55:06

The humidity of the air is reformed with the state of the air. When the air is compressed, its temperature rises and the relative humidity decreases; when the compressed air expands, the temperature of the air drops, its relative humidity increases, and there will usually be moisture Precipitate from it.

If the air contains too much water, it will have the following effects on the air compressor:

1. The moisture in the air narrows the compressed air passage and increases the resistance of air flow;
2. Affect the volumetric efficiency of the gas;
3. It is not conducive to the compression of the machine, and the compression equipment and wind-driven machinery are subjected to hydraulic shock. If the cooler and cylinder store a lot of water, it will also cause damage to the machine;
4. The moisture in the air is very corrosive, which makes the compression equipment and pneumatic machinery easy to rust and shortens the service life;
5. The water in the gas is mixed with the lubricating oil during the compression process, which will reduce the lubricating efficiency and increase the abrasion of the machine parts. In the packing used for glue circulation lubrication, it will not only cause poor sealing but also deteriorate the lubricating oil;
6. One cubic meter of humid air (that is, the density of gas molecules) is less than the weight of dry air of the same volume. At the same time, when the compressed air passes through the cooler air tank and pipeline, most of the water vapor is condensed, so the production capacity for weight calculation will be reduced;
7. The air supply system contains water. When the temperature is lower than 0 degrees, the water will freeze on the inner wall of the air duct. Similarly, reduce the pipe diameter, and worse, sometimes even cause individual pipelines to freeze completely, hindering individual sections work. Therefore, the quality of compressed air is not only determined by its pressure, but also by its humidity.

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