Common Sense of Compressed Air


Air is compressed by external force, we call it compressed air. The most notable feature is clear and transparent, easy transport, no special harmful performance, no fire danger, not afraid of overload, it also can work at many adverse environments.

     

 The role of compressed air

The air is compressed by machinery, and then becomes compressed air. The equipment is often called air compressor, which uses for producing compressed air. Long time ago, humans already knew how to use compressed air, and now compressed air is indispensable power energy for human production and life. With the continuous development of modern industry, the requirement of compressed air quality is also getting higher and higher, and shows diversified.
Dew point temperature

The unsaturated air will reduce temperature in constant situation of water vapor partial pressure under certain pressure (that is, to maintain absolute water content is the same), so that making it reach saturated state, it is called "dew point temperature. it is called "atmospheric dew point" or "ordinary dew point" when air pressure is dew point temperature of 1 atmospheric pressure.

Centigrade temperature

The ice’s melting point is to be temperature of starting point, the unit is "degrees Celsius", the unit symbol is ℃.


Absolute temperature

  The minimum limit temperature of gas molecules cease move can be as starting temperature, which is indicated by T, its unit is Kelvin, and then the unit symbol is K.
Atmospheric pressure 

 The pressure caused by a thick atmospheric layer of surrounding at earth surface or surface object, which is called atmospheric pressure, and the symbol is B.


 Absolute pressure

The pressure acting directly on pressure vessel or object surface, which is called "absolute pressure”, and it’s based on absolute vacuum as starting point, the symbol is PABS, absolute pressure unit is in MPa (A).
 Gauge pressure

 Using pressure gauge, vacuum gauge, U-tube and other instruments to measure pressure, which called "gauge pressure" (also known as relative pressure), it can make atmospheric pressure as starting point, and the symbol is Pg.
Atmospheric pressure, absolute pressure, and gauge pressure: Pabs = B + Pg.
Does it can directly use after compressing air?

When air is compressed, the moisture does not run out of compressed cavity, which directly leads to a rise of water vapor density in the air. Even if all gas coming out of compression unit of the compressed system doesn’t contain oil, its temperature is much higher and relative humidity is 100%; That is, compressed air can’t be used directly because temperature, water content of unit volume and oil content will increase after compressed air. At this time you need to dry and purify, then you may match dryer and filter.
Please directly call 0755-27579401, if you are interested or have any questions about biteman modular-units dryer.

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