Desuperheater / Vacuum Water Chillers
Chemical-free refrigeration and flash cooling applications
Croll Reynolds vacuum water chillers / Desuperheater are a low cost-solution to cooling high volumes of water for the chemical, pharmaceutical, food and paper industries. These unique system uses our multi-nozzle ejector technology in multiple stages to draw vacuum on various chambers of a chiller tower and gradually cool down the required flow of water to 1.5° – 10° C depending on the starting temperature of supplied water.
Vacuum Chiller tower utilizes multiple stages of our multi-nozzle boosters in series to create gradually increasing vacuum on multiple chambers of the chilling tower; The water running through different chambers is then chilled usually to temperatures in the range of 1.5° – 10° C., although in many processes, liquids are cooled to even lower temperatures. The drawing below shows how Croll Reynolds’s CHILL-VACTOR uses this principle in a typical water-chilling units. Water to be chilled enters the chill tank and flows over a weir plate. When the water meets the vacuum in the chill tank, it boils instantly. The weir distributes the water in the vacuum chamber. Heat energy is released as the water vapor expands and the water temperature is lowered. The chilled water is then removed by a barometric leg or pump. It is circulated through heat exchangers, air conditioning equipment or other process equipment and returned to the chill tank. If part or all the water is required for process use, fresh water is fed continuously into the chill tank. In circulating systems, make-up water amounting to approximately 1% for each 5.5° C of cooling is added.