Modellization of the spatial localization effect of the mixture dissipation on the sensitivity in a flow microcalorimeter

Abstract

It is proposed a calorimetric model that helps to understand the dependence on the sensitivity of a flow microcalorimeter with the spatial localization of the energetic dissipation. The model allows to compare the spatial localization of different studied mixtures and permits us to conclude that in the ‘rapid’ mixtures, the length that the mixture dissipation occupies and the sensitivity remain nearly constant; however, in the mixtures called ‘slow’, the mixture length increases with the injection flow. This fact produces, at the same time, a clear variation of the sensitivity.