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<p>Enclosure materials can have a variety of properties that moderate relative humidity (RH) in relation to external RH fluctuations. In this study of different constructions and board types we developed a simple empirical model to predict the relative humidity damping capacity via a Humidity Attenuation (HA) index. A multiple linear regression model was built to predict the HA index based on the material/box properties. The results indicate that at low ventilation rates, vapour permeability has a similar (but opposite) effect to moisture buffering and that stacking boxes or filling them with paper significantly improves the enclosure’s RH damping capacity. This work will provide a more realistic assessment of the suitability of museum enclosure microenvironments with respect to RH moderation. To increase applicability in practice, a decision-making tool (an online app) was developed for curators and conservators to support preventive conservation measures.</p>

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A simple generalized mass transfer model for evaluation of the environmental performance of archival boxes

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年8月6日

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  • Jernej Markelj,
  • Josep Grau-Bove,
  • Ida Kraševec,
  • Evy Vereecken,
  • Matija Strlič

摘要

Enclosure materials can have a variety of properties that moderate relative humidity (RH) in relation to external RH fluctuations. In this study of different constructions and board types we developed a simple empirical model to predict the relative humidity damping capacity via a Humidity Attenuation (HA) index. A multiple linear regression model was built to predict the HA index based on the material/box properties. The results indicate that at low ventilation rates, vapour permeability has a similar (but opposite) effect to moisture buffering and that stacking boxes or filling them with paper significantly improves the enclosure’s RH damping capacity. This work will provide a more realistic assessment of the suitability of museum enclosure microenvironments with respect to RH moderation. To increase applicability in practice, a decision-making tool (an online app) was developed for curators and conservators to support preventive conservation measures.