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A Net ZEB Case Study—Experiences from Freezing in Ventilation Heat Exchanger and Measured Energy Performance

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Book cover Cold Climate HVAC 2018 (CCC 2018)

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Abstract

Net Zero Energy Buildings constitute one measure to reduce energy use and increase use of energy from renewable sources. Hence, it is important share knowledge and experiences from completed projects. This case study show that it is possible to build Net Zero Energy Buildings with existing techniques. However, a common strategy to prevent or limit the build-up of ice and frost in ventilation heat exchangers, Supply fan shut off, were not suitable this project, since it is air tight buildings. After occurring problems in the first winter, ventilation pre-heater were installed to prevent the build-up of ice and frost. Thanks to placement of temperature sensor after the pre-heater, the increased energy use for pre-heater may be expected to be low, roughly 1 kWh/m2a.

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Author information

Authors and Affiliations

  1. Skanska Sverige AB, Teknik, Stockholm, Sweden

    Björn Berggren

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  1. Björn Berggren
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Correspondence to Björn Berggren .

Editor information

Editors and Affiliations

  1. Division of Building Services, Lund University, Lund, Sweden

    Dennis Johansson

  2. Division of Building Physics, Lund University, Lund, Sweden

    Hans Bagge

  3. Division of Building Services, Lund University, Lund, Sweden

    Åsa Wahlström

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Berggren, B. (2019). A Net ZEB Case Study—Experiences from Freezing in Ventilation Heat Exchanger and Measured Energy Performance. In: Johansson, D., Bagge, H., Wahlström, Å. (eds) Cold Climate HVAC 2018. CCC 2018. Springer Proceedings in Energy. Springer, Cham. https://doi.org/10.1007/978-3-030-00662-4_51

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  • DOI: https://doi.org/10.1007/978-3-030-00662-4_51

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-00661-7

  • Online ISBN: 978-3-030-00662-4

  • eBook Packages: EnergyEnergy (R0)

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