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Assessment of Thermal Comfort in Rooms Equipped with a Decentralised Façade Ventilation Unit

Author

Listed:
  • Ewa Zender-Świercz

    (Department of Building Physics and Renewable Energy, Faculty of Environmental, Geomatic and Energy Engineering, Kielce University of Technology, 25-314 Kielce, Poland)

  • Marek Telejko

    (Department of Building Organization and Building Materials, Faculty of Civil Engineering and Architecture, Kielce University of Technology, 25-314 Kielce, Poland)

  • Beata Galiszewska

    (Department of Building Physics and Renewable Energy, Faculty of Environmental, Geomatic and Energy Engineering, Kielce University of Technology, 25-314 Kielce, Poland)

  • Mariola Starzomska

    (Department of Building Physics and Renewable Energy, Faculty of Environmental, Geomatic and Energy Engineering, Kielce University of Technology, 25-314 Kielce, Poland)

Abstract

Thermal comfort affects not only the well-being of the occupants of a building but also the effectiveness of their learning and work efficiency. It can be disturbed if the ventilation airflow is increased when improving indoor air quality. When natural ventilation is used in the fall and winter period, the supply air temperature is low, resulting in a lack of thermal comfort. In existing buildings, there is often no place for mechanical ventilation; hence, decentralised façade ventilation units are increasingly used. The article presents an analysis of thermal comfort in rooms with this type of unit equipped with heat recovery exchangers of different efficiencies. Studies have shown that the alternating supply/exhaust airflow and the related unevenness of air streams flowing through the heat accumulator cause an inflow of low-temperature air, resulting in thermal discomfort. The highest value of the PMV index was −1.6, and the lowest was −4.1, which means that 54.8 to 100% of the occupants are dissatisfied with their thermal comfort. This means there is a need to change the construction of inlet/exhaust vents so that the stream of supply air is not directly parallel to the floor. In addition, the use of an air heater should be considered.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:7032-:d:924423
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    References listed on IDEAS

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    Cited by:

    1. Katarzyna Ratajczak & Łukasz Amanowicz & Katarzyna Pałaszyńska & Filip Pawlak & Joanna Sinacka, 2023. "Recent Achievements in Research on Thermal Comfort and Ventilation in the Aspect of Providing People with Appropriate Conditions in Different Types of Buildings—Semi-Systematic Review," Energies, MDPI, vol. 16(17), pages 1-55, August.
    2. Beata Galiszewska & Ewa Zender-Świercz, 2023. "Development of a Numerical Simulation Methodology for PCM-Air Heat Exchangers Used in Decentralised Façade Ventilation Units," Energies, MDPI, vol. 16(15), pages 1-15, July.
    3. Łukasz Amanowicz & Katarzyna Ratajczak & Edyta Dudkiewicz, 2023. "Recent Advancements in Ventilation Systems Used to Decrease Energy Consumption in Buildings—Literature Review," Energies, MDPI, vol. 16(4), pages 1-39, February.

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