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Comparison of Moving Boundary and Finite-Volume Heat Exchanger Models in the Modelica Language
When modelling low capacity energy systems such as a small (5-150 kW el ) organic Rankine cycle unit, the governing dynamics are mainly concentrated in the heat exchangers. As a consequence, accuracy and simulation speed of the higher level system model mainly depend on the heat exchanger model formulation. In particular, the modelling of thermodynamic systems characterized by evaporation or condensation, requires heat exchanger models capable of handling phase transitions. To this aim, thedoi:10.3390/en9050339 fatcat:ycxrvkedwzdjjnnyssmqake73m