GERMANY: Stuttgart-based Fischer Kälte-Klima has developed an ultra low-temperature chiller, said to be suitable for local storage of vaccines at -80°C.
The [CF] Ultra is described as a plug & play package solution consisting of an ultra low-temp liquid chiller, complete control and regulation technology, integrated hydraulic module and a special 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, which can be selected on the basis of 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 is used as the coolant in the direction of the cooling chamber/heat exchanger, and conventional monoethylene 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.