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- W3046854285 abstract "Abstract Future district heating systems (DHS) will be supplied by renewable sources, most of which are limited in temperature and flow rate. Therefore, operational optimization of DHS is required to maximize the use of renewable sources and minimize (fossil) peak loads. In this paper, we present a robust and fast model-predictive control approach to use the thermal mass of buildings as a daily storage without violating temperature constraints. The novelty of this paper includes two elements. First, the focus on an operational control strategy that explicitly accounts for temperature-limited renewable sources, like a geothermal source. Secondly, the optimization problem is formulated as a (nearly) convex optimization problem, which is required for adoption of model-predictive control in practice. The examples show that the peak heating demand can be reduced by 50%, if the thermal inertia of the buildings is used and the heating setpoints are adapted. Furthermore, the operational optimization finds the proper balance between benefits of pre-heating using renewable sources with limited capacity and costs of additional heat losses due to pre-heating." @default.
- W3046854285 created "2020-08-07" @default.
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- W3046854285 date "2020-11-01" @default.
- W3046854285 modified "2023-09-24" @default.
- W3046854285 title "Operational optimization of district heating systems with temperature limited sources" @default.
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- W3046854285 doi "https://doi.org/10.1016/j.enbuild.2020.110347" @default.
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