The incessant need to reduce energy consumption is an ever-present fact for all plant engineers. It is estimated that compressed air production and compressed air treatment amounts to approximately 30% of an average production plant’s power consumption. SPX Flow has introduced a radically new approach to compressed air drying.
The phase change material (PCM) compressed air dryer provides low dew point air via a unique and patented 4-in-1 heat exchanger. The PCM housed within a plate to plate heat exchanger possesses a high latent heat property that enables the material to melt or freeze at constant temperature. It absorbs heat from warm moisture-laden compressed air without a significant change in temperature and stays colder for longer periods of time. This system allows the freon compressor within the dryer to cycle the freon compressor with long off-time periods, resulting in great cost savings.
The PCM dryer lowers the air system power costs and improves productivity by matching power consumption to compressed air demand. It cycles the power load to match compressed air demand with great effectiveness. As the load fluctuates, the power requirement to dry the compressed air is matched in proportion to the demand. As a comparison, a non-cycling dryer uses a constant 96% under any operating load. A PCM dryer when operating at 60% load only consumes 60% of its full load energy. It offers superior power savings, without the need to use complex VSD drives, coolant pumps or glycol tanks.
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