ELGi Equipments Limited non-cyclic refrigerated air dryers

ELGi Equipments has expanded its range of non-cyclic refrigerated air dryers with the inclusion of three-phase options on five of its medium-sized models which produce flow rates from 210 to 590 cfm (5.95 to 16.71 m³/min).

The product includes a controller which automatically reduces the fan speed or stops the fan depending on the condensing pressure and dryer temperature.

A rotary compressor is designed to ensure specific power consumption while the inclusion of a heat exchanger minimises the pressure drop and maximises thermal efficiency. The three-stage heat exchange system with cold storage allows the unit to cycle on and off as necessary. The heat exchanger is also able to operate in high ambient temperatures, suitable for Australian conditions.

The inclusion of a zero loss drain means that only condensate is drained with no air loss, which helps save energy.

The dryers include a fixed speed, hermetically sealed and energy-efficient rotary compressor. They feature a suction separator muffler, an internal protector, a reverse-phase protector in the three-phase variants and a run capacitor which contribute to the overall high reliability of these compressors.

Additional design details include a hot gas bypass valve, which prevents the freezing phenomenon in the heat exchanger, the use of high quality copper capillary tube, level sensing drain, insulation of each and every pipe, a number of protection devices and failure prevention features on the controller.

Meeting F-Gas regulations, the EGRD series use either the ozone-friendly R-134a or R-407c gas, both of which have zero ozone depletion potential (ODP).

The models contain removable access panels providing immediate access to all parts of the system for easy maintenance. All service alerts are also clearly displayed on the controller.