Hygrothermal Analysis of a Museum Storage Room for Metal Cultural Artifacts: Quantification of Factors Influencing High Humidity

Kazuki Ishikawa, Chiemi Iba, Daisuke Ogura, Shuichi Hokoi and Misao Yokoyama
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Kazuki Ishikawa: Graduate School of Engineering, Kyoto University, Kyoto 6158540, Japan
Chiemi Iba: Graduate School of Engineering, Kyoto University, Kyoto 6158540, Japan
Daisuke Ogura: Graduate School of Engineering, Kyoto University, Kyoto 6158540, Japan
Shuichi Hokoi: School of Architecture, Southeast University, Nanjing 210096, China
Misao Yokoyama: Graduate School of Agriculture, Kyoto University, Kyoto 6068502, Japan

Energies, 2021, vol. 14, issue 11, 1-19

Abstract: Several methods for appropriate control of the hygrothermal environment in museums to prevent the deterioration of cultural artifacts were presented in previous studies. However, few detailed hygrothermal simulation models have been used considering the hygrothermal performance of building components and airflow through gaps. Furthermore, hygrothermal properties of a type of storage facility with buffer spaces prevailing in Japan have not been quantitatively evaluated. The objectives of this study were to develop a detailed numerical model of a museum storage room with buffer spaces exhibiting high humidity during summer and to quantitatively evaluate the potential factors causing it; the inflow of humid outdoor air and indirect cooling caused by the air-conditioning system of a surrounding room. We analyzed the simulated temperature and humidity for various cases in which each influencing factor was suppressed. The humidity was reduced when the exhaust fan for the surrounding rooms was stopped or the windows were made airtight, but it hardly changed when the cooling ducts and the reinforced concrete beams were insulated. Thus, the high humidity in the room was attributed to the inflow of humid outdoor air accelerated by the ventilation of surrounding rooms. Although indirect cooling had a small impact on high humidity, its impact on energy loss could still be significant.

Keywords: hygrothermal simulation model; facility operation methods; airflow network model (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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