Modelica language-based discrete dynamic heat collector modeling method

The invention discloses a modeling method of a discrete dynamic heat collector based on a Modelica language. The modeling method comprises the following steps: building a molten salt medium model for dynamic simulation; a finite element method is adopted, and a molten salt side dynamic heat exchange...

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Hauptverfasser: HOU JUNYANG, XU AIGUO, SHI CUIYING, QIAN JIANJIE, LI XIANG
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a modeling method of a discrete dynamic heat collector based on a Modelica language. The modeling method comprises the following steps: building a molten salt medium model for dynamic simulation; a finite element method is adopted, and a molten salt side dynamic heat exchanger pipeline is built; based on the dynamic characteristics of Modelica grammar, the dynamic molten salt heat collector based on the finite element method is obtained. According to the method, a heat exchanger is divided into a series of non-repeated discrete units based on a finite volume method, in each discrete unit, the radiation heat exchange amount and the convection heat exchange amount of heat collecting pipes, the mutual influence between the pipes due to the temperature and the heat transfer mode of fused salt in the pipes are considered, and the heat collector is divided into different assemblies to create respective thermodynamic models. The function of measuring the dynamic distribution of the temperatur