Reduced Heat Exchange in the Dryers
Even in compressed air dryers, thickened oil sticks to the surface during longer standstill periods and the heat exchange is impaired. The narrowed flow channels increase the differential pressure, possibly to the point of overloading the compressed air system. Flushing the heat exchangers with oil and grease dissolving cleaning agents provides a remedy.
Adsorption dryers use a granular desiccant and are always dependent on a certain flow velocity. If the flow rate is too low, only partial total adsorption occurs and the compressed air is no longer sufficiently dehumidified. Such undesirable effects can be detected with suitable measuring technology.