The difference between suction dryer and cold dryer

The main differences between the suction dryer and the cold dryer are as follows:

working principle:

drying machine: through the adsorbent (such as silica gel, activated alumina, etc.) to absorb the moisture in the compressed air, so as to achieve the effect of drying. When the adsorbent is saturated, it needs to recover its adsorption capacity through a regeneration process.

Cold dryer: The use of refrigeration technology to cool the compressed air to the dew point below, so that the moisture in the air is condensed into liquid water, and then discharged through the drain, so as to achieve the effect of drying.

Drying effect:

drying machine: can achieve a lower dew point, usually can reach -40 ℃ or even lower, suitable for occasions with high dryness requirements.

Cold dryer: Dew point is generally low, usually between 2-10 ℃, suitable for general industrial applications.

Energy consumption and cost:

drying machine: the energy consumption is relatively high, because it needs to consume a certain amount of energy to regenerate the adsorbent. At the same time, the adsorbent needs to be replaced regularly, which increases the operating cost.

Cold dryer: relatively low energy consumption, mainly through refrigeration technology to achieve drying, operating costs are relatively low.

Maintenance and operation:

drying machine: the adsorbent needs to be replaced regularly and the regeneration operation is carried out, and the maintenance is relatively complicated.

Cold dryer: Maintenance is relatively simple, mainly focusing on the operation of the refrigeration system and the cleaning of the drain.

Application occasions:

drying machine: suitable for occasions with high dryness requirements, such as precision manufacturing, electronics, medicine and other industries.

Cold dryer: suitable for general industrial applications, such as machinery manufacturing, automobile manufacturing, food processing, etc.

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