jailcd2020095: Daylighting Evaluation in Site Museums with a Large Space Exhibition Hall

Abstract

Daylight has been widely used in museum exhibitions for its fine functions of color rendering and energy saving. Most of the site museums also apply daylight as important light supplement to build satisfying exhibition environment. CIE 157:2004 divided different materials into four levels of sensitivity. Stones and ceramics, which are the main collections of site museums, are divided into the irresponsive level. However, the special soil-air coupled preservation environment for site museums makes it quite different from that in indoor museums. This paper takes Chengdu Jiangnan Pavilion Street Site Museum and the Pit 1 in Mausoleum of the First Qin Emperor as cases to study the daylight in site museums with a large space exhibition hall. Onsite measurements and numerical simulation were taken into use to help perform the daylighting evaluation. The results show that the direct sunlight produces severe light exposure, which can rise up the surface temperature of the artifacts and the soil environment, and may change the preservation environment. Therefore, the skylights and side windows of site museums should be carefully designed to avoid direct daylight. Moreover, further studies on soil changes under intense daylight should be carried out to reach the specific statistics.