The KDR E-Save Hybrid Drum Dryer is ideal for anyone wanting -20 °C dewpoint without any purge loss.

The first stage of the dryer system is a classic refrigeration dryer sized for 5 °C pressure dewpoint. The second stage is a KDR E-Save Drum Dryer.

The combination of the two systems produces:

● Constant -20 °C dewpoint (option for -40 °C dewpoint);

● Zero purge loss;

● Low energy consumption (2% refrigeration compressor, 1-2% for KDR E-Save Drum Dryer).

This hybrid system can be used on both oil-free and oil-flooded compressors. The savings in energy and purge loss make it more attractive than heated desiccant or traditional hybrid systems.

The KDR E-Save Hybrid Drum Dryer is smaller, lighter and more flexible to install than comparable systems. It has a simple standard piping between the first and second state, and does not require any alteration to the compressor system.

Environmentally friendly, Efficient, Energy saving, Easy to maintain & service.

The KDR E-Save Hybrid Drum Dryer circuit begins with the flow of hot air from the compressor package to the receiver (1 to 2) before then flowing onto a venturi (3). The air then continues to flow through the refrigeration dryer (4) cooling and drying the air before the air is split into two separate flows, the main flow and the recirculation flow.

The main flow of the air is dried further as it passes through the adsorbing section of the drum (5). Dry air then exits the drum (6). The recirculation flow of the air is diverted along another path where it passes through an air to air heat exchanger econimiser (7), picking up heat before passing through a heater (8).

The hot dry air then passes through the regeneration section the drum to regenerate the desiccant. The moisture laden hot air then passes back through the air to air heat exchanger econimiser (7) cooling off slightly before it rejoins the original flow of air at the venturi (3).

1.Compressor

2.Receiver

3.Venturi

4.Refrigerant Dryer

5.Adsorbing Flow

6.Dry Air

7.Air to Air Heat Exchanger Economiser

8.Heater

9.Regeneration Flow