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Suitability Pre-Assessment of in-Sewer Heat Recovery Sites Combining Energy and Wastewater Perspectives

Author

Listed:
  • Franz Huber

    (Institute of Sanitary Engineering and Water Pollution Control, University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria)

  • Georg Neugebauer

    (Institute of Spatial Planning, Environmental Planning and Land Rearrangement, University of Natural Resources and Life Sciences, Peter Jordan-Strasse 82, 1190 Vienna, Austria)

  • Thomas Ertl

    (Institute of Sanitary Engineering and Water Pollution Control, University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria)

  • Florian Kretschmer

    (Institute of Sanitary Engineering and Water Pollution Control, University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria)

Abstract

In many countries around the world heating (and cooling) has been and will remain the biggest energy sector, but it is still widely dominated by fossil energy sources today. Wastewater as a source of renewable energy contains large amounts of heat and due to its place-bound localization in urban sewer systems it is usually also situated in very close distance to potential heat consumers. However, one has to keep in mind that heat extraction from wastewater might have undesired impacts on temperature-sensitive treatment processes in the related wastewater treatment plant (WWTP). To assess the potential impact of in-sewer heat recovery on inflow temperature, two different approaches are available today: a simple (but less significant) alligation alternate, or very accurate (but less practical) mathematical models. To close the gap between practicability and significance this article introduces a novel approach to pre-assess the suitability of in-sewer heat recovery sites based on little and easily available data considering energy- and wastewater-related perspectives. A case study application demonstrates the informative value and general usability of the approach. Consequently, the proposed procedure can provide guidance and a template for related investigations at any place in a conventional (combined or separated) sewer system.

Suggested Citation

  • Franz Huber & Georg Neugebauer & Thomas Ertl & Florian Kretschmer, 2020. "Suitability Pre-Assessment of in-Sewer Heat Recovery Sites Combining Energy and Wastewater Perspectives," Energies, MDPI, vol. 13(24), pages 1-32, December.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:24:p:6680-:d:464104
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    References listed on IDEAS

    as
    1. Georg Neugebauer & Florian Kretschmer & René Kollmann & Michael Narodoslawsky & Thomas Ertl & Gernot Stoeglehner, 2015. "Mapping Thermal Energy Resource Potentials from Wastewater Treatment Plants," Sustainability, MDPI, vol. 7(10), pages 1-23, September.
    2. Farzin Golzar & David Nilsson & Viktoria Martin, 2020. "Forecasting Wastewater Temperature Based on Artificial Neural Network (ANN) Technique and Monte Carlo Sensitivity Analysis," Sustainability, MDPI, vol. 12(16), pages 1-17, August.
    3. Elías-Maxil, J.A. & van der Hoek, Jan Peter & Hofman, Jan & Rietveld, Luuk, 2014. "Energy in the urban water cycle: Actions to reduce the total expenditure of fossil fuels with emphasis on heat reclamation from urban water," Renewable and Sustainable Energy Reviews, Elsevier, vol. 30(C), pages 808-820.
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    1. Peter Lichtenwoehrer & Lore Abart-Heriszt & Florian Kretschmer & Franz Suppan & Gernot Stoeglehner & Georg Neugebauer, 2021. "Evaluating Spatial Interdependencies of Sector Coupling Using Spatiotemporal Modelling," Energies, MDPI, vol. 14(5), pages 1-23, February.

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