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Björling, Mikael and Mattsson, Magnus and Akander, Jan (2018) Infiltration of Air into two World Heritage Farmhouses in Sweden during Winter Conditions. In: Roomvent & Ventilation 2018 'Excellent Indoor Climate and High Performing Ventilation', 2-5 June, 2018, Espoo, Finland.

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As a part of an ongoing study, we report measurements of air infiltration during winter conditions into two Decorated Farmhouses of Hälsingland designated as UNESCO World Heritage Sites. In winter these two-storied farmhouses are rarely heated, except for special occasions. In this measurement one farmhouse was unheated, whereas one room was heated for a brief period in the other one. The observed local mean ages of air measured with tracer gas techniques generally increase with height, both locally within each room and between floors. The average temperature and humidity also increases from the first to the second floor. The indoor temperature follows the outdoor temperature with a time lag. The differences in water content between inside and outside air correlate with changes of the indoor relative humidity. The correlation is stronger for humidity increase than for humidity decrease, possibly due to moisture absorption by interior text.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: World Heritage, preservation, moisture, relative humidity, air infiltration, PFT tracer
Subjects: English > Climate Control
English > Monitoring
Depositing User: Susanna Carlsten
Date Deposited: 08 May 2020 13:16
Last Modified: 08 May 2020 13:16

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