The relationship between air consumption and power consumption of desiccant air dryer

More and more customers are starting to care about air quality. Therefore, compressed air treatment equipment has become more and more important. For some special applications, such as food, medicine, precision electronics, etc., the moisture in the compressed air will not only affect the terminal pipeline, but even have a great impact on the quality of the finished product. These moistures cannot be accepted by the user.

The ISO standard for measuring compressed air is ISO 8573-1:2010. According to the design principle of the refrigerated air dryer, its highest achievable pressure dew point is 3℃. The corresponding compressed air quality grade has a water content of grade 4. If customers need higher pressure dew points, such as -20°C/-40°C/-70°C, generally need to choose the desiccant air dryer on the market.

The basic principle of the adsorption dryer is to absorb the moisture in the compressed air through a desiccant. According to the regeneration method of desiccant, it can be divided into a series of products such as heatless, heated, blower purge, HOC type and so on.

Desiccant regeneration needs to consume a certain proportion of compressed air or electricity. This results in additional energy consumption. Therefore, to measure the performance of the adsorption dryer, in addition to the quality of the compressed air, its energy consumption level is also very important. Next, let's compare the advantages and disadvantages of different types of suction dryers:

Heatless: The heatless regeneration adsorption dryer uses a desiccant to absorb the moisture in the compressed air. The machines consist of two identical towers respectively. Cycle switching between adsorption and regeneration. When the cycle ends, the functions are switched to each other. The regeneration gas requires a certain percentage of the finished compressed air to be consumed.

Micro-heat: Micro-heat regenerative adsorption dryers are mostly similar to heatless regenerative adsorption dryers. Heated by electric heater. Thereby reducing the consumption of compressed air.

Blower Heat: The principle of blast regeneration adsorption dryer is similar to that of general heatless adsorption dryer. But the regeneration method is blast regeneration. For models with zero air consumption, this part of the regeneration air can also be recycled.

Heat of Compression: The drying process is carried out using the heat of compression generated by the compressor. Therefore, energy consumption and costs can be reduced.

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