So how does Hi-Plex work? Well, a Hi-line Tundra refrigeration system first removes bulk moisture via zero loss auto-drains, after which it chills the air to +1°C in the heat exchanger, condensing out all water to a +3°C PDP (Pressure Dewpoint). From here, the pre-dried air passes into an energy-efficient HPSA (Hi-line Pressure Swing Adsorption) dryer where it is further dried via adsorption to lower dewpoints of between -20°C PDP and -70°C PDP depending on end-user requirements, meeting Class 2 moisture content in accordance with ISO8573.1. As a point of note, Hi-line can add an Activated Carbon Tower for Class 0 applications.
Hi-Plex regeneration takes place by deploying a vacuumed-assisted fan, which uses a reduced amount of purge air to cause a desorption effect within the desiccant beds. A side-channel vacuum pump removes the small amount of remaining water (via exhaust silencers) back to the atmosphere from where it came. This plug and play system is fully automatic: wet air in – dry air out.
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