000002014 001__ 2014
000002014 005__ 20141118153446.0
000002014 04107 $$acze
000002014 046__ $$k2014-05-20
000002014 100__ $$aMaekawa, Shin
000002014 24500 $$aModeling Impacts of Visitation on Cave Environments

000002014 24630 $$n$$pProceedings of the International Conference on Conservation of Stone and Earthen Architectural Heritage
000002014 260__ $$bThe Graduate School of Cultural Heritage, Kongju National University, Republic of Korea
000002014 506__ $$arestricted
000002014 520__ $$2eng$$aWall paintings of the Mogao Grottoes have survived for a millennium in the cool-dry cave environment in the northwestern desert of China. Visitor numbers have been steadily increasing, subjecting the wall paintings to greater stresses contains hygroscopic salts. The largest threat to the wall paintings is elevated humidity levels near or above their deliquescent humidity, 67% RH, of the salt. The carbon dioxide (CO2) concentration, an indoor air quality (IAQ) parameter, was set not to exceed 1500 ppm in the caves for visitor comfort and safety. Two mathematical models, one for CO2 concentration and the other for humidity, were developed for simulating the environment in caves. The models use known CO2 and moisture emission rates for adults, measured air infiltration rates of the caves, and climate conditions of the caves and site. Predicted values and monitored data were compared over the 8-hour operational period as well as closed overnight. The CO2 concentration coincided well indicating the validity of the model. However, the humidity prediction was nearly 200% above the monitored peak as well as equally faster decay rates, indicating lack of the buffering term, such as the adsorption/desorption of moisture by cave surfaces.

000002014 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000002014 653__ $$aModeling, Cave environment, Preservation of wall paintings, Indoor air quality, Visitor carrying capacity

000002014 7112_ $$aInternational Conference on Conservation of Stone and Earthen Architectural Heritage$$cKongju (KR)$$d2014-05-20$$gICOMOS-ISCS 2014
000002014 720__ $$aMaekawa, Shin
000002014 8560_ $$ffischerc@itam.cas.cz
000002014 8564_ $$s222851$$uhttps://invenio.itam.cas.cz/record/2014/files/p07.pdf$$y
             Original version of the author's contribution as presented on CD, 47.
            
000002014 962__ $$r2005
000002014 980__ $$aPAPER