Modeling two phases of refining process of animal fat

Abstract

This work describes the mathematical model of both phases of the refining process of animal fat – the phase of heating and the phase of melting. In order to prepare biodiesel using animal fat, it is necessary to heat the solid fat to the melting point, and then melt it until the whole fat becomes liquid. Points of interest are the temperature of fat depending on time during heating and the amount of changing the dimension of the fat portion during the melting subprocess. The first described model is valid only until the temperature of fat reaches the melting point. Afterwards, the second phase of refining process starts and it is modeled differently.