Abstract
Modelica models for the prediction of the temperature of the load inside a walking basket type reheat furnace of the aluminium industry have been developed. The loads move through the furnace with discrete movements. Several library components have been developed using the Modelica Standard Fluid Library. In order to validate them a full 1D furnace simulation model has been built. It allows calculating the heat transfer through walls, the temperature and the composition of combustion gases, the temperature of the aluminium products, as well as the fumes flow and the pressure drops. The library provides the necessary resources for modelling this type of furnaces flexibly and quickly. The objective of the work is to validate Modelica as analyse tool for evaluating the different possibilities of heat recovery in this kind on furnaces.
Highlights
IntroductionThe aluminium industry incorporates processes that are large consumers of energy as, for example, the solubilisation and ageing of aluminium parts
The efficient and sustainable use of energy is currently a social obligation
The final target of our work is to develop a Modelica library that includes submodels of heat and mass transfer, as well as, other complex entities such as load movement controller, sensors, actuators and controls, which together will allow building quickly a full cyber-physical model of an industrial gas furnace
Summary
The aluminium industry incorporates processes that are large consumers of energy as, for example, the solubilisation and ageing of aluminium parts. They are carried out in gas furnaces with high energy losses through fumes. The measures for saving energy in these processes often involve a risky redesign of the installation since they usually operate at full capacity. Any error has a high cost, so these measures are not being introduced in practice [1]. It is, necessary to have tools that allow analysing and evaluating the different modes of operation of these furnaces. We have chosen an open-language standard, Modelica, and a commercial simulation environment, Dymola
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