Conference article

DNA - An Integrated Open-Source Optimization Platform for Thermo-Fluid Systems

Leonardo Pierobon
Technical University of Denmark, Department of Mechanical Engineering, Denmark

Jorrit Wronski
Technical University of Denmark, Department of Mechanical Engineering, Denmark

Brian Elmegaard
Technical University of Denmark, Department of Mechanical Engineering, Denmark

Fredrik Haglind
Technical University of Denmark, Department of Mechanical Engineering, Denmark

Ian H. Bell
University of Liège, Thermodynamics Laboratory, Belgium

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Published in: Proceedings of the 55th Conference on Simulation and Modelling (SIMS 55), Modelling, Simulation and Optimization, 21-22 October 2014, Aalborg, Denmark

Linköping Electronic Conference Proceedings 108:19, p. 197-210

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Published: 2014-12-09

ISBN: 978-91-7519-376-2

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

This paper presents developments and new features added to the simulation tool Dynamic Network Analysis. This open-source software is the result of ongoing development at the Department of Mechanical Engineering, Technical University of Denmark since 1988. Ever since, it has been employed to model dynamic and steady-state energy systems and is now available for the most common operating systems (Windows, Mac OS and Linux). Emerging interest in novel plant technologies, high-temperature heat pumps, refrigeration absorption modules, and in energy system optimization has stressed the necessity to extend the capabilities of the software, while at the same time decreasing computational time. Dynamic Network Analysis can now solve non-convex optimization problems by virtue of the fully-embedded genetic algorithm. Moreover, the thermophysical fluid property library has been extended with more than 110 fluids by interfacing CoolProp, a high accuracy open-source property package for pure and pseudo-pure fluids, as well as humid air. The new features are unveiled in one case study where the optimization of an air bottoming cycle unit recuperating the exhaust heat from an offshore power system is performed by taking advantage of CoolProp’s table-based property interpolation scheme.

Keywords

DNA; CoolProp; Evolutionary algorithm; Thermophysical properties

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