A study of thermodynamics and bond graph modelling of evaporation in infant incubator

The modelling of physical systems is very important phenomena in today´s world due to easy understanding of their dynamics. There are several methods to model the physical systems, one of which is the bond graph technique which is the graphical representation of the physical dynamics of the systems. In this paper, we have modelled the heat mechanism of a biomedical baby incubator that is used to keep babies warm and safe from infections. There are four types of heat transfer mechanism in baby incubator which are conduction, convection, evaporation and radiation. In this study, we have modelled the evaporation mechanism through Pseudo bond graph technique using 20-Sim software package. Later on we have designed a PID Controller to control and monitor the characteristics of evaporation. Our simulation results shows that a baby incubator as an open system can be modelled and analysed for better design using bond graph simulations.