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Determination of Heat Transfer Correlations for Fluids Flowing through Plate Heat Exchangers Needed for Online Monitoring of District Heat Exchanger Fouling

Author

Listed:
  • Tomasz Romanowicz

    (Department of Energy, Cracow University of Technology, 31-155 Cracow, Poland)

  • Jan Taler

    (Department of Energy, Cracow University of Technology, 31-155 Cracow, Poland)

  • Magdalena Jaremkiewicz

    (Department of Thermal Processes, Air Protection, and Waste Utilisation, Cracow University of Technology, 31-155 Cracow, Poland)

  • Tomasz Sobota

    (Department of Thermal Processes, Air Protection, and Waste Utilisation, Cracow University of Technology, 31-155 Cracow, Poland)

Abstract

This article deals with the problem of estimating the degree of fouling of plate heat exchangers (PHEs) used in district heating substations (where the working medium is water). A method for calculating the thermal resistance of fouling is proposed based on a comparison of the thermal resistance of a fouled and clean heat exchanger. The thermal resistance of the heat exchanger for both fouled and clean apparatuses is determined as the inverse of their overall heat transfer coefficient. In the method, the heat transfer coefficients necessary to determine the overall heat transfer coefficient of the clean exchanger are calculated using a modified Wilson method. Moreover, the heat transfer coefficients on the clean heat exchanger plates’ cold water side are determined based on experimental tests. The computational algorithm presented in this paper will make it possible to develop software to monitor and thus optimise the operation of district heating substations.

Suggested Citation

  • Tomasz Romanowicz & Jan Taler & Magdalena Jaremkiewicz & Tomasz Sobota, 2023. "Determination of Heat Transfer Correlations for Fluids Flowing through Plate Heat Exchangers Needed for Online Monitoring of District Heat Exchanger Fouling," Energies, MDPI, vol. 16(17), pages 1-14, August.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:17:p:6264-:d:1227464
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    References listed on IDEAS

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    1. Olga Arsenyeva & Leonid Tovazhnyanskyy & Petro Kapustenko & Jiří Jaromír Klemeš & Petar Sabev Varbanov, 2023. "Review of Developments in Plate Heat Exchanger Heat Transfer Enhancement for Single-Phase Applications in Process Industries," Energies, MDPI, vol. 16(13), pages 1-28, June.
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    Cited by:

    1. Tomasz Janusz Teleszewski & Leszek Hożejowski, 2024. "Estimating Sludge Deposition on the Heat Exchanger in the Digester of a Biogas Plant," Sustainability, MDPI, vol. 16(18), pages 1-13, September.

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