The difference between a cold dryer and a suction dryer may be a world of difference. As the saying goes, "One millionth error makes a thousand miles of error.".

Please also pay attention to the difference between the two (cold dryer and suction dryer) when purchasing.

1. No compressed air consumption: most users do not have very high requirements for the dew point of compressed air. For example, using a cold dryer can save energy compared with using a suction dryer;

2. No valve wear: the dryer has the problem of switching valve. Although there are also valves in the cold dryer, there is basically no wear problem;

3. It is unnecessary to add and replace adsorbent regularly;

4. Low running noise; The dryer has the noise of pressure relief of the adsorption tower. In the air compression room, the operating noise of the dryer is generally not heard;

5. Daily maintenance is relatively simple, as long as the automatic drainer filter screen is cleaned on time;

6. The pretreatment requirements for the air source are not high, and the general oil-water separator can meet the requirements of the air inlet quality of the cold dryer;

Compared with the adsorption dryer, the "pressure dew point" of the compressed air treated by the dryer can only reach above 0 ℃, so the drying depth of the gas is far less than that of the dryer.

Classified by adsorbent:

There are two types of adsorption dryers:

It can be divided into heatless adsorption dryer and heatless adsorption dryer. As the heatless adsorption dryer works according to isothermal adsorption, also known as "pressure swing adsorption", the heatless adsorption dryer works according to isobaric adsorption, also known as "temperature swing adsorption". In actual use, there is also a kind of micro heat dryer. From the perspective of form, the micro heat dryer also heats the gas, but because the gas it uses is dry air with very low water content, it is also a "PSA" dryer.