Design of a mathematical model for determining the volume of fuel

ABSTRACT Petroleum as a result of long-lasting natural processes in the 21st century is irreplaceable and integral part not only for industry, but also for the whole society. It also represents the basic raw material for production of petroleum products such as diesel, petrol and mineral oils. The basic property of liquids and mineral oil in the case of petrol and diesel is the change of volume dependent on temperature changes. In general, the thermal expansion of petrol is higher than that of diesel because of a different chemical composition. There are a lot of changes of temperature of petroleum products during distribution process starting in refinery and ending in underground storage tanks at petrol stations. It was necessary to define corresponding measurements for determination of real volume. The measurements are influenced by different factors that shall be analysed and quantified. This contribution is aimed on the solution of corresponding measurements with the focus on the determination of real changes of volumes. The measurements are described by mathematic model. All measurements take into account evaluation of corresponding uncertainties.