Articlehybrid2018

Intermittent conditioning of library archives: Microclimate analysis and energy impact

Karin Kompatscher · Rick P. Kramer · Bart Ankersmit · Henk L. Schellen

39 citations0/0 files storedBuilding and Environment

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Conservation Techniques and Studies Building Energy and Comfort Optimization Building energy efficiency and sustainability

Abstract

Libraries and archives house a majority of cultural heritage objects. The main purpose of libraries and archives is to provide suitable indoor climate conditions for preservation of their collection. In general, a large bulk of hygroscopic material is present which aids stable indoor climate conditions. Limited disturbances due to visitor presence occur in repositories and excludes to a large extent thermal comfort requirements. Library archives show potential of more tolerant setpoint control with permissible fluctuations. Little research is present into dynamic setpoint control and intermittent conditioning in libraries and archives. The aim of this study is to explore the possibility for intermittent conditioning and dynamic setpoint control on the energy impact and microclimate behavior in a library case study in The Netherlands. By means of a hygrothermal monitoring campaign from August 2016 to August 2017 the current indoor climate has been assessed under regular conditions and intervention periods (summer and winter) where the air handling unit was turned off. Both temporal and spatial measurements provided important information on microclimate behavior of the investigated repositories. A validated multi-zone model was used to investigate multiple setpoint strategies. Results show the potential of intermittent conditioning depending on whether dynamic setpoint conditions are used during operational hours (e.g. ASHRAE climate classes). If static conditions are applied, energy demand increases significantly, however, under dynamic setpoint control significant energy savings are possible. The lifetime multiplier is used to assess the chemical risks. The majority of investigated setpoint strategies show increased chemical risk.

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References

1978The museum environment 2008A methodology for microclimatic quality evaluation in museums: Application to a temporary exhibit 2014Environmental monitoring and microclimatic control strategies in “La Specola” museum of Florence 2016A sequential process to assess and optimize the indoor climate in museums 2016Impact of ASHRAE’s museum climate classes on energy consumption and indoor climate fluctuations: Full-scale measurements in museum Hermitage Amsterdam 2010Conservation of cultural property. Specifications for temperature and relative humidity to limit climate-induced mechanical damage in organic hygroscopic materials 1996Humidity and Moisture in Historic Buildings: The Origins of Building and Object Conservation 2016Managing Indoor Climate Risks in Museums

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