Comparing the air quality performance in unoccupied storage buildings between mechanical ventilation and semi-passive climate control

Signe Hjerrild Smedemark, Morten Ryhl-Svends, Jørn Toftum

Research output: Contribution to conferencePaperResearchpeer-review

Abstract

Air pollution can damage heritage collections. This study examines the air quality performance in one store with mechanical ventilation and in another with semi-passive climate control. Air pollution was measured with passive diffusion samplers during summer and winter. The atmospheric corrosivity was determined gravimetrically using copper, zinc and lead coupons, and by a real-time electrical resistance monitor over one year. The concentration of outdoor-generated air pollution was low within both stores. The emission of formic acid and acetic acid from internal sources led to higher indoor concentrations. The total acid concentration was 15 µg m-3 in the store with mechanical ventilation and 97 µg m-3 in the store with semi-passive climate control. The indoor atmospheric corrosivity was determined as very low by both methods. The study demonstrated that stores using mechanical ventilation with air filtration and semi-passive climate control provide acceptable air quality for the preservation of heritage collections.
Original languageEnglish
Publication date2021
Publication statusPublished - 2021
Event19th ICOM-CC Triennial Conference : Transcending Boundaries: Integrated Approaches to Conservation - Beijing, China
Duration: 17 May 202121 May 2021
Conference number: 19

Conference

Conference19th ICOM-CC Triennial Conference
Number19
CountryChina
CityBeijing
Period17/05/202121/05/2021

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