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Comparison of discrete dynamic pipeline models for operational optimization of District Heating Networks

Maurer, Jona; Ratzel, Oliver M.; Malan, Albertus J.; Hohmann, Sören

Abstract (englisch):
Optimal operation of District Heating Networks (DHNs) is a very challenging task. One of the main challenges for DHNs optimization tool designers is the choice of an adequate dynamic thermal pipeline model which gives a good tradeoff between accurately modeling the physics of the thermodynamic processes and simultaneously yielding a numerically efficient model. To address this, the paper states the main Partial Differential Equation (PDE) which is used to describe the convection of hot water throughout the literature, together with reasonable assumptions that lead to minor deviations from measurements. Then, different approaches are described which can be used to solve the respective PDE. More specifically, the very common Node Method (NM), approximations of the NM, the lagrangian approach and different Finite Difference (FD) approaches are presented. The main aim of this work is to provide a qualitative and quantitative comparison of these modeling approaches in the context of optimal DHN operation. Our quantitative results show, that by comparing the different approaches to measurement data, the NM yields the smallest modeling errors for most of the temporal discretization sizes. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000139841
Veröffentlicht am 12.11.2021
DOI: 10.1016/j.egyr.2021.08.150
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Regelungs- und Steuerungssysteme (IRS)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 10.2021
Sprache Englisch
Identifikator ISSN: 2352-4847
KITopen-ID: 1000139841
Erschienen in Energy reports
Verlag Elsevier
Band 7
Seiten 244–253
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