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Techno-economic analysis of a local district heating plant under fuel flexibility and performance

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Abstract

Brovst is a small district in Denmark. This paper analyses the use of local renewable resources in the district heating systems of Brovst. The present use of fossil fuels in the Brovst district heating plant (DHP) represents an increasing environmental and climate-related load. Therefore, an investigation has been made to reduce the use of fossil fuels for district heating system and make use of the local renewable resources (biogas, solar, and heat pump) for district heating purposes. In this article, the techno-economic assessment is achieved through the development of a suite of models that are combined to give cost and performance data for this district heating system. Local fuels have been analyzed for different perspectives to find the way to optimize the whole integrated system in accordance with fuel availability and cost. This paper represents the energy system analysis mode, energyPRO, which has been used to analyze the integration of a large-scale energy system into the domestic district heating system. A model of the current work on the basis of information from the Brovst plant (using fossil fuel) is established and named as a reference option. Then, four other options are calculated using the same procedure according to the use of various local renewable fuels known as “biogas option,” “solar option,” “heat pump option,” and “imported heat option.” A comparison has been made between the reference option and other options. The greatest reduction in heat cost is obtained from the biogas option by replacing a new engine, where 66 % of the current fuel is substituted with biogas.

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Acknowledgments

The project has been supported by the European Regional Development Fund, grant no. ERDFN-09-0060. The authors would like to thank Niels From from PlanEnergi for his valuable discussion and contribution in the simulation.

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Authors and Affiliations

  1. Department of Engineering Sciences, University of Agder, Serviceboks 509, 4898, Grimstad, Norway

    Souman Rudra

  2. Department of Energy Technology, Aalborg University, DK-9220, Aalborg, Denmark

    Lasse Rosendahl

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  1. Souman Rudra
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  2. Lasse Rosendahl
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Correspondence to Souman Rudra.

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Rudra, S., Rosendahl, L. Techno-economic analysis of a local district heating plant under fuel flexibility and performance. Energy Efficiency 10, 613–624 (2017). https://doi.org/10.1007/s12053-016-9475-2

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  • DOI: https://doi.org/10.1007/s12053-016-9475-2

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