The cooler way to control
21 Feb 2001
Biopharma Process Systems has launched a new range of compact, light-weight cooling units designed to be easily integrated into production or process lines.
The Alaska system is a method of precise cryogenic cooling for process or reaction vessels using liquid nitrogen. Liquid nitrogen removes the need for more traditional refrigerant based technologies and, apart from the environmental benefits, is particularly suited to very low temperatures.
The system is designed to operate with an even flow of cooling medium combined with correct energy distribution to ensure optimum performance. The system can also be equipped with an optional heating module.
The operating principle is the use of a specially designed heat exchanger which employs liquid nitrogen for cooling, with fluid circulation through the vessel to be cooled. As the liquid nitrogen is not in direct contact with the product, the risk of freezing is eliminated.
Alaska units are available in a range of seven sizes from five to 100kW. The standard cooling limit is down to -80?C, with an option down to -120?C. The optional integral steam heating system provides for applications where heat is needed, therefore a possible temperature range of -120?C to +200?C can be achieved.
