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The Impact of Air Pressure Conditions on the Performance of Single Room Ventilation Units in Multi-Story Buildings

Author

Listed:
  • Alo Mikola

    (Nearly Zero Energy Research Group, Tallinn University of Technology, Tallinn 19086, Estonia)

  • Raimo Simson

    (Nearly Zero Energy Research Group, Tallinn University of Technology, Tallinn 19086, Estonia)

  • Jarek Kurnitski

    (Nearly Zero Energy Research Group, Tallinn University of Technology, Tallinn 19086, Estonia)

Abstract

Single room ventilation units with heat recovery is one of the ventilation solutions that have been used in renovated residential buildings in Estonia. In multi-story buildings, especially in a cold climate, the performance of units is affected by the stack effect and wind-induced pressure differences between the indoor and the outdoor air. Renovation of the building envelope improves air tightness and the impact of the pressure conditions is amplified. The aim of this study was to predict the air pressure conditions in typical renovated multi-story apartment buildings and to analyze the performance of room-based ventilation units. The field measurements of air pressure differences in a renovated 5-story apartment building during the winter season were conducted and the results were used to simulate whole-year pressure conditions with IDA-ICE software. Performance of two types of single room ventilation units were measured in the laboratory and their suitability as ventilation renovation solutions was assessed with simulations. The results show that one unit stopped its operation as a heat recovery ventilator. In order to ensure satisfactory indoor climate and heat recovery using wall mounted units the pressure difference values were determined and proposed for correct design.

Suggested Citation

  • Alo Mikola & Raimo Simson & Jarek Kurnitski, 2019. "The Impact of Air Pressure Conditions on the Performance of Single Room Ventilation Units in Multi-Story Buildings," Energies, MDPI, vol. 12(13), pages 1-18, July.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:13:p:2633-:d:246759
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    References listed on IDEAS

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    1. Anti Hamburg & Targo Kalamees, 2018. "The Influence of Energy Renovation on the Change of Indoor Temperature and Energy Use," Energies, MDPI, vol. 11(11), pages 1-15, November.
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    Cited by:

    1. Nicolas Carbonare & Hannes Fugmann & Nasir Asadov & Thibault Pflug & Lena Schnabel & Constanze Bongs, 2020. "Simulation and Measurement of Energetic Performance in Decentralized Regenerative Ventilation Systems," Energies, MDPI, vol. 13(22), pages 1-25, November.
    2. Ewa Zender–Świercz, 2021. "A Review of Heat Recovery in Ventilation," Energies, MDPI, vol. 14(6), pages 1-23, March.
    3. Ewa Zender-Świercz & Marek Telejko & Beata Galiszewska & Mariola Starzomska, 2022. "Assessment of Thermal Comfort in Rooms Equipped with a Decentralised Façade Ventilation Unit," Energies, MDPI, vol. 15(19), pages 1-16, September.
    4. Alberto Meiss & Miguel Ángel Padilla-Marcos & Irene Poza-Casado & Antonio Álvaro-Tordesillas, 2020. "A Graphical Tool to Estimate the Air Change Efficiency in Rooms with Heat Recovery Systems," Sustainability, MDPI, vol. 12(3), pages 1-15, January.

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