Chapter 3 Holistic Modeling of Gas and Aerosol Deposition and the Degradation of Cultural Objects

摘要: Abstract This chapter addresses the deposition of gases and aerosols both inside outside museums possible effects that such may have on cultural objects. issue is addressed through concept holistic modeling, where all critical factors controlling degradation process are defined linked together. The types sizes particulates within exterior to a museum outlined. found dwelling their relations pollutants described. aerosol gas mechanisms equations for each mechanism In order define conditions deposition, condensation formation moisture layers also presented. These principles then illustrated by analysis generation, transport objects in external environment, followed similar buildings. case buildings, literature first reviewed, three studies analyzed represent significant cases or highlight unresolved issues literature. clarify relative importance mechanism. It evident major building gravity, vortex shedding and, air flows, momentum-dominated impact. Factors attachment detachment dwellings outlined, as common damage forms result some pollutants. Throughout especially towards end, implications findings design maintenance strategies discussed.