Published July 15, 2024 | Version v1
Journal article Open

Measuring heat transfer processes in gully pots for real-time estimation of accumulated sediment depths

  • 1. ROR icon Universidade da Coruña
  • 2. ROR icon Deltares
  • 3. ROR icon Norwegian University of Science and Technology
  • 4. SkillsInMotion B.V.

Description

Abstract:

The accumulation of sediments in stormwater systems negatively affects their functioning. For example, the re-suspension of these sediments can lead to serious pollution of surface water bodies through combined sewer overflows (CSOs). In addition, the persistent accumulation of sediments reduces the storage and hydraulic capacity of stormwater systems, resulting in an increased risk of flooding. Stormwater managers spend considerable resources cleaning these systems, but we still lack reliable and easy-to-use monitoring methods to provide information on the location, volume and composition of sediments. This study explores the use of temperature sensors combined with the analysis of heat transfer processes to measure sediment depth in sand trap gully pots. To this end, a laboratory-scale experimental campaign was carried out using a 1:1 scale gully pot model, with different sediment types, hydrographs and inflow temperature conditions. The experiments were designed using field measurements to reproduce the temperature changes in gully pots and thus the heat transfer processes. The results showed maximum differences between reference measurements and estimated depths of less than 30 mm. Finally, the use of temperature sensors as a cost-effective solution for monitoring sediment accumulation is discussed.

Notes (English)

The work developed by Manuel Regueiro-Picallo is funded within the postdoctoral fellowship programmes from the
Xunta de Galicia (Consellería de Cultura, Educación e Universidade, ED481B-2021-082 and ED481D-2024-023). This
work includes the results from a joint research activity funded by the EU under the Horizon 2020 INFRAIA program (Co-UDlabs project. GA No. 101008626). The authors are also indebted to the members of the ESF department of Deltares, in special Danko Boonstra, Christian van Nieuwenhuizen, Jelle Molenaar, Gerard Vaalburg, Richard Boele, Ben Boon and Jos Ooms, for their support during the experimental campaign. Funding for open access charge: Universidade da Coruña/CISUG.

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Related works

Is supplemented by
Dataset: 10.5281/ zenodo.10226224 (DOI)

Funding

Co-UDlabs – Building Collaborative Urban Drainage research labs communities 101008626
European Commission
Postdoctoral fellowship programme ED481D-2024-023
Xunta de Galicia