Purpose - The purpose of this paper is to present two simulation strategies for tube induction welding process. Coupled electromagnetic and thermal problem is solved by applying 3D FEM models. The resulting power density and temperature distribution are compared.
Design/methodology/approach - FE analysis has been used in order to compute the magnetic and thermal field in a suitable 3D model.
Findings - Two strategies for coupled magnetic and thermal simulation with movement are proposed.
Practical implications - Reported strategies can be used to design tube induction welding devices and to verify the influence of the main parameters of the process, i.e. welding velocity, frequency, specific and total power.
Originality/value - The paper summarizes two different simulation strategies taking into account the movement of the tube through the inductor. In the first strategy, the tube heating is simulated by providing the mean power absorbed by a tube section crossing the inductor. In the second strategy, a spatial translation of the material properties is implemented
In the paper, a novel approach to numerical modeling of tube induction welding is proposed. The coupled electromagnetic and thermal model must take into account also the movement of the metal strip: in order to make possible this kind of simulation in reasonable computation time, a simplified approach to the modeling is presented and discussed
The building sector plays an important role in the transition to a climate-neutral society. The international interest in low, zero energy, or zero-emission buildings has grown as a potential means for this transition. A more ambitious step from zero energy buildings is the concept of Positive Energy Buildings (PEB), which are also contributing to the decarbonization of the surrounding built environment, not just minimizing their own carbon footprint. A shared PEB definition is needed in order to enable the design, assessment, and documentation of positive energy buildings. This article describes the ongoing discussions, concentrating on the most essential points.
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