Gas Chillers for Cryogenic Use
Gas Chillers cool dry gases such as nitrogen, argon or air from ambient to cryogenic temperature without precooling. The gas chillers operate as a closed-loop refrigeration system that cools a gas stream using a refrigerant to gas tube-in-tube heat exchanger. The gas stream is nonrecirculating. Polycold Model PGC-152 uses an auto-refrigerating cascade technique with a mixed refrigerant to provide ultra-low temperatures without liquid nitrogen. It will cool dry gas to temperatures between -130 to -193°F (-90 to -125°C, or 183 to 148K) without sacrificing high flow rates.
Brooks Automation Inc.