According to the use, it is determined that there is a small amount of water in the process of using compressed air, such as pneumatic tools, cylinder power, equipment purging, etc., which will not cause harm and loss. The atmospheric dew point can be determined to be about 310e. In some cases, such as the purging of electronic instruments and the cleaning of non-ferrous metal processing products, it is required that no water droplets can be deposited. If the water droplets are ejected during the purging of the electronic device, the short circuit and the performance of the electronic components may be changed. If a water droplet is deposited during processing of a processed product (such as copper strip, copper foil, aluminum strip, or aluminum foil), the fine water droplets will become a halo with the high-speed coiled product, which deteriorates the quality of the product. For this purpose, it should be ensured that the compressed air does not have water droplets at the ambient temperature.
Ensure that the compressed air pressure dew point used is lower than the temperature of the compressed air during transport and use. To do this, we must take different measures to distinguish different situations. For example, in the northeast and northwest regions, the temperature is low. If the compressed air pipeline may lower the temperature of the compressed air below atmospheric temperature during the transportation process, it is necessary to ensure that the pressure dew point of the compressed air output from the compressed air station is lower than the outdoor atmospheric temperature. . In the south, because the compressed air output from the compressed air station is about 3040e, the temperature of the compressed air delivered by the pipeline will not drop below 10e, and the indoor ambient temperature is often higher than 5e, ensuring that the compressed air station outputs compressed air. The pressure dew point is less than 5e, without having to set the pressure dew point of the compressed air station to output compressed air to -20e or -10e (some equipment manufacturers often indiscriminately set the desired compressed air dew point to a lower level). For users who require low dew point compressed air locally, a low dew point compressed air drying device can be provided near the user. The compressed air output from the compressed air station is normal compressed air or high dew point compressed air, which can save the consumption of dry compressed air. energy.
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