ASSESSMENT OF SOME PHYSICAL FACTORS AND DESIGN FEATURES OF ROTORS IN THERMAL EFFECTS CAUSED BY CENTRIFUGATION

In separating the components of highly dispersed heterogeneous systems, use is made of centrifuges with very high rotation velocities, this leading to samples heating. The said above is due to the friction of the rotor against the air from the centrifuge chamber to the movement of heating from centrifuge engine towards the samples and to compression of samples liquid. However, heating of samples sensible to temperature can generate in these samples the intensification of some uncontrolled chemical processes. This paper is devoted to the investigation of the increase of centrifuged samples temperature depending on the time and relative centrifugal acceleration for model-samples (water and glycerine) using two constructively different types of rotors. The obtained results can be taken into account when elaborating some more rigorous methods for studying finely-dispersed heterogeneous systems.