Stuttgart-based Fischer Kälte-Klima developed an ultra low-temperature chiller, suitable for local storage of vaccines at -80°C. The [CF] Ultra is a plug & play package solution consisting of an ultra low-temp liquid chiller, complete control and regulation technology, integrated hydraulic module, and a stainless steel air cooler designed for the application.
With a cooling capacity of 3.2kW at -80°C, the [CF] Ultra is said to offer the perfect performance for regional vaccine storage. It was designed, in cooperation with Mecotec, a long-term Fischer partner, and a highly specialised market leader in the field of medical cryogenic temperature applications.
The [CF] Ultra device requires an external dry cooler selected based on individual project requirements. Of compact design, it requires an installation area of less than 1.5m2. Employing a two-stage system, it uses R449A on the pre-cooling side and R508B on the freezer side. R508B is a blend of R23 and the perfluorocarbon R116 and has a high GWP of 13,396.
A special low-temperature fluid used as the coolant in the direction of the cooling chamber/heat exchanger, and conventional mono ethylene glycol in the secondary circuit to the recooler. The [CF] Ultra employs two semi-hermetic Bock HA compressors. It is delivered pre-programmed from the factory and only needs to be connected to the heat exchanger on site.