Abstract
The general-purpose simulation language Modelica was created to improve the efficiency of modelling activities by application of object-oriented principles. The concept of reuse of models demands the organization of components in libraries. TechThermo is a base library for simulation of transient systems in engineering thermodynamics. The models included in this library represent the fundamental processes needed in a wide range of applications; only problem-specific models must be added. TechThermo consists of interface definitions, models for imposing boundary conditions, thermophysical property correlations, descriptions for heat and mass transfer, models of basic technical components and simplified subsystems. The simulation of a storage system for a solar – thermal power plant is used to demonstrate the application of TechThermo. About 90% of the source code defining this example is contributed by models taken from TechThermo.
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