The effect of positive pressure on indoor air quality in a deeply renovated school building – a case study

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussavertaisarvioitu

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The effect of positive pressure on indoor air quality in a deeply renovated school building – a case study. / Vornanen-Winqvist, Camilla; Toomla, Sander; Ahmed, Kaiser; Kurnitski, Jarek; Mikkola, Raimo; Salonen, Heidi.

11th Nordic Symposium on Building Physics, NSB2017. Elsevier, 2017. s. 165-170 (Energy procedia; Vuosikerta 132).

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussavertaisarvioitu

Harvard

Vornanen-Winqvist, C, Toomla, S, Ahmed, K, Kurnitski, J, Mikkola, R & Salonen, H 2017, The effect of positive pressure on indoor air quality in a deeply renovated school building – a case study. julkaisussa 11th Nordic Symposium on Building Physics, NSB2017. Energy procedia, Vuosikerta. 132, Elsevier, Sivut 165-170, Trondheim, Norja, 11/06/2017. https://doi.org/10.1016/j.egypro.2017.09.679

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Bibtex - Lataa

@inproceedings{6220a31b0a704533b5c946f00fd27a8a,
title = "The effect of positive pressure on indoor air quality in a deeply renovated school building – a case study",
abstract = "This paper is a case study of ventilation and indoor air quality (IAQ) investigations in an extensively repaired comprehensive school in Finland. Our main hypothesis is that positive pressure between air indoors and outdoors can be used for decreasing the concentration of harmful chemical and microbiological agents in indoor air, as well as occupants´ complaints about IAQ, in a building waiting for new repairs or with unsolved IAQ problems. Research was undertaken on a building consisting of 12 classrooms, and served by one air handling unit. It found that the ventilation system was crucially unbalanced. However, IAQ measurements did not explain occupants´ symptoms, which were suspected to be related to the impurities leaked through the building envelope caused by the high negative pressure. To eliminate the potential harmful effects of the building related sources and infiltration airflows, the air handling unit was adjusted to generate a 5-7 Pa positive pressure for a period of 4 months. In the next planned phase of the study, moisture content of the structures during the heating season will be measured, as well as potential changes in perceived IAQ and microbial contamination.",
keywords = "Positive pressure, mechanical ventilation, indoor air quality, school building",
author = "Camilla Vornanen-Winqvist and Sander Toomla and Kaiser Ahmed and Jarek Kurnitski and Raimo Mikkola and Heidi Salonen",
year = "2017",
doi = "10.1016/j.egypro.2017.09.679",
language = "English",
series = "Energy procedia",
publisher = "Elsevier",
pages = "165--170",
booktitle = "11th Nordic Symposium on Building Physics, NSB2017",

}

RIS - Lataa

TY - GEN

T1 - The effect of positive pressure on indoor air quality in a deeply renovated school building – a case study

AU - Vornanen-Winqvist, Camilla

AU - Toomla, Sander

AU - Ahmed, Kaiser

AU - Kurnitski, Jarek

AU - Mikkola, Raimo

AU - Salonen, Heidi

PY - 2017

Y1 - 2017

N2 - This paper is a case study of ventilation and indoor air quality (IAQ) investigations in an extensively repaired comprehensive school in Finland. Our main hypothesis is that positive pressure between air indoors and outdoors can be used for decreasing the concentration of harmful chemical and microbiological agents in indoor air, as well as occupants´ complaints about IAQ, in a building waiting for new repairs or with unsolved IAQ problems. Research was undertaken on a building consisting of 12 classrooms, and served by one air handling unit. It found that the ventilation system was crucially unbalanced. However, IAQ measurements did not explain occupants´ symptoms, which were suspected to be related to the impurities leaked through the building envelope caused by the high negative pressure. To eliminate the potential harmful effects of the building related sources and infiltration airflows, the air handling unit was adjusted to generate a 5-7 Pa positive pressure for a period of 4 months. In the next planned phase of the study, moisture content of the structures during the heating season will be measured, as well as potential changes in perceived IAQ and microbial contamination.

AB - This paper is a case study of ventilation and indoor air quality (IAQ) investigations in an extensively repaired comprehensive school in Finland. Our main hypothesis is that positive pressure between air indoors and outdoors can be used for decreasing the concentration of harmful chemical and microbiological agents in indoor air, as well as occupants´ complaints about IAQ, in a building waiting for new repairs or with unsolved IAQ problems. Research was undertaken on a building consisting of 12 classrooms, and served by one air handling unit. It found that the ventilation system was crucially unbalanced. However, IAQ measurements did not explain occupants´ symptoms, which were suspected to be related to the impurities leaked through the building envelope caused by the high negative pressure. To eliminate the potential harmful effects of the building related sources and infiltration airflows, the air handling unit was adjusted to generate a 5-7 Pa positive pressure for a period of 4 months. In the next planned phase of the study, moisture content of the structures during the heating season will be measured, as well as potential changes in perceived IAQ and microbial contamination.

KW - Positive pressure

KW - mechanical ventilation

KW - indoor air quality

KW - school building

UR - http://www.sciencedirect.com/science/article/pii/S1876610217348269

U2 - 10.1016/j.egypro.2017.09.679

DO - 10.1016/j.egypro.2017.09.679

M3 - Conference contribution

T3 - Energy procedia

SP - 165

EP - 170

BT - 11th Nordic Symposium on Building Physics, NSB2017

PB - Elsevier

ER -

ID: 15989551