RNR/ Exal manufactures large capacity twin tower No Loss Split Flow Dryers (NLSF). In an NLSF dryer we split in the inlet flow using a distribution system. The distribution system splits the flow into Air/Gas to be sent for drying and Air/Gas to be used for regeneration. The regeneration Air/ Gas is first heated and enters the first tower, where it is first used to desorb the moisture by heating the desiccant to high temperatures. The Air/ Gas carriers all the excess moisture from desorption and is then passed through a cooler where it is cooled and the moisture is condensed. The cooled Compressed Air/ Gas is 100% saturated and combines with the initial split air to form 100% flow stream which passes on to the second tower where the moisture adsorbs onto the desiccant and air becomes dry in the process.

The towers interchange from drying to regeneration based on the cycle to allow a continues stream of dry Air/ Gas.

Having a comprehensive understanding of desiccant circuit allows us to simulate many aspects of the machine performance. Some key design aspects used by us simulate machine performance include: Cycle Time, Flow rate, Working Pressure, Dewpoint desired, Inlet Temperature, Compressor Interstage and Intermediate temperatures, Water Temperatures etc. We evaluate the moisture quantity coming into the dryer to determine the desiccant quantity. In addition, we consider other factors such as heating time and cooling time and the flow available for heating/ cooling of the desiccant based on turn down.

Note: Heater rating is not the average machine power consumption. Having excess heater capacity is beneficial. Our dryer power consumptions are on basis of moisture in system and the energy required to desorb and heat the desiccant bed.