New generation of refrigerated dryers

“Our customers want help with their efforts to reduce carbon emissions, increase sustainability and lower their operating and energy costs,” said Rolf Paeper, vice president of product management and marketing for Compression Technologies and Services at Ingersoll Rand. “We developed the technology used in these new refrigerated dryers to deliver the efficiency, air quality and reliability while putting it in a smaller, more efficient and economical package.”

The newly launched high efficiency cycling and standard non-cycling refrigerated dryers feature innovative heat exchanger technology with advanced condensation management and improved heat transfer characteristics. They offer capacity of 1300-2250m³/h and deliver Class-4 dry air, with a pressure dew point (PDP) of +3°C.

The new intelligent controller constantly monitors the condensate level in the moisture separator to optimise discharge through the electronic no-loss drain valve. If the drain is not properly discharging due to contaminates, or some other malfunction, the controller will automatically adjust the timing sequence of the drain in order to maintain optimum discharge and the dryer’s performance.

Ingersoll Rand refrigerated dryers use centrifugal separation to remove moisture at the coldest point in the system. As the air stream is cooled in the heat exchanger, moisture from the air stream condenses and is discharged through an electronic condensate removal drain. The result is highly efficient moisture removal and dry, clean air, combined with low-pressure drop. 

In the high efficiency cycling dryer design, a thermal mass storage reservoir is added to the refrigeration circuit to store cold energy. This is said to reduce compressor run time and offer customers additional energy savings. 

To ensure durability and reliability during operation, the new refrigerated dryers were tested in a climatic chamber to simulate the most demanding environmental conditions possible and were validated according to ISO 9001 specifications.