Assessment of Thermal Comfort in Rooms Equipped with a Decentralised Façade Ventilation Unit
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 peri...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-09-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/15/19/7032 |
| _version_ | 1797479622764396544 |
|---|---|
| author | Ewa Zender-Świercz Marek Telejko Beata Galiszewska Mariola Starzomska |
| author_facet | Ewa Zender-Świercz Marek Telejko Beata Galiszewska Mariola Starzomska |
| author_sort | Ewa Zender-Świercz |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-09T21:48:27Z |
| format | Article |
| id | doaj.art-e4133a499a544ac09a6a84124586106b |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T21:48:27Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-e4133a499a544ac09a6a84124586106b2023-11-23T20:12:00ZengMDPI AGEnergies1996-10732022-09-011519703210.3390/en15197032Assessment of Thermal Comfort in Rooms Equipped with a Decentralised Façade Ventilation UnitEwa Zender-Świercz0Marek Telejko1Beata Galiszewska2Mariola Starzomska3Department of Building Physics and Renewable Energy, Faculty of Environmental, Geomatic and Energy Engineering, Kielce University of Technology, 25-314 Kielce, PolandDepartment of Building Organization and Building Materials, Faculty of Civil Engineering and Architecture, Kielce University of Technology, 25-314 Kielce, PolandDepartment of Building Physics and Renewable Energy, Faculty of Environmental, Geomatic and Energy Engineering, Kielce University of Technology, 25-314 Kielce, PolandDepartment of Building Physics and Renewable Energy, Faculty of Environmental, Geomatic and Energy Engineering, Kielce University of Technology, 25-314 Kielce, PolandThermal 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.https://www.mdpi.com/1996-1073/15/19/7032thermal comfortdecentralised façade ventilation unitsstorage heat exchangers for heat recovery |
| spellingShingle | Ewa Zender-Świercz Marek Telejko Beata Galiszewska Mariola Starzomska Assessment of Thermal Comfort in Rooms Equipped with a Decentralised Façade Ventilation Unit Energies thermal comfort decentralised façade ventilation units storage heat exchangers for heat recovery |
| title | Assessment of Thermal Comfort in Rooms Equipped with a Decentralised Façade Ventilation Unit |
| title_full | Assessment of Thermal Comfort in Rooms Equipped with a Decentralised Façade Ventilation Unit |
| title_fullStr | Assessment of Thermal Comfort in Rooms Equipped with a Decentralised Façade Ventilation Unit |
| title_full_unstemmed | Assessment of Thermal Comfort in Rooms Equipped with a Decentralised Façade Ventilation Unit |
| title_short | Assessment of Thermal Comfort in Rooms Equipped with a Decentralised Façade Ventilation Unit |
| title_sort | assessment of thermal comfort in rooms equipped with a decentralised facade ventilation unit |
| topic | thermal comfort decentralised façade ventilation units storage heat exchangers for heat recovery |
| url | https://www.mdpi.com/1996-1073/15/19/7032 |
| work_keys_str_mv | AT ewazenderswiercz assessmentofthermalcomfortinroomsequippedwithadecentralisedfacadeventilationunit AT marektelejko assessmentofthermalcomfortinroomsequippedwithadecentralisedfacadeventilationunit AT beatagaliszewska assessmentofthermalcomfortinroomsequippedwithadecentralisedfacadeventilationunit AT mariolastarzomska assessmentofthermalcomfortinroomsequippedwithadecentralisedfacadeventilationunit |