A Nonlinear Optimization Method for the Topological Design of District Heating Systems

Jerry Lambert, Stephan Herrmann, Hartmut Spliethoff

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

Abstract

In this paper, a method is presented to find optimal topology, pipe sizing, and operational parameters of a district heating system. The current high costs of district heating systems set limits for building new networks regarding the minimum heat demand density. Potential for cost reduction is offered by optimized routing with ideal pipe sizing as well as optimal operating parameters. Nonlinear optimization approaches with a simultaneous calculation of these parameters are limited to a small district heating network with few customers due to scaling computational costs. Therefore, to reduce the computational cost scaling with bigger district heating systems, the optimization problem is subdivided into two iterative subproblems. First, an initial sizing of the district heating pipes is assumed. Second, optimal hydraulic parameters and optimal pipe sizing are determined. In the subsequent optimization, the corresponding thermal solution is calculated. The solution of these two subproblems is iterated until the network converges to an optimal solution. As a proof of concept, a small-scale district heating system is optimized. With this small-scale example the correct functioning of the proposed iterative algorithm is intuitively shown.

OriginalspracheEnglisch
TitelProceedings of ECOS 2022 - 35th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
Redakteure/-innenBrian Elmegaard, Enrico Sciubba, Ana Maria Blanco-Marigorta, Jonas Kjaer Jensen, Wiebke Brix Markussen, Wiebke Meesenburg, Nasrin Arjomand Kermani, Tingting Zhu, Rene Kofler
Herausgeber (Verlag)DTU Construct
Seiten813-823
Seitenumfang11
ISBN (elektronisch)9788774756989
PublikationsstatusVeröffentlicht - 2022
Veranstaltung35th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2022 - Copenhagen, Dänemark
Dauer: 3 Juli 20227 Juli 2022

Publikationsreihe

NameProceedings of ECOS 2022 - 35th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

Konferenz

Konferenz35th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2022
Land/GebietDänemark
OrtCopenhagen
Zeitraum3/07/227/07/22

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