The power of air

THE POWER OF AIR Air curtain technology can help control the environment in the pit. IRREPARABLE DAMAGE GASEOUS POLLUTANTS IN THE EXHIBITION HALL Changes in temperature cause cracks as the figure expands and contracts Pollutants that go into the pores of the pottery form sulfates and other substances, deteriorating the physical state of the figure and decomposing the paint • So2 (Sulfur dioxide) • No2 (Nitrogen dioxide) • Nox (Nitric oxide) • 03 (Ozone) Annual average Concentrations ug m3 thoughout the day 40 90% 30 Air pollutants and heat 20 of pollutants in the air are prevented from entering the pit 10 The major environmental factors to relics include temperature, humidity, air pollutants, lighting, dust and mold. 06 07 08 09 1O 11 visitor visitor walkway walkway AIR CURTAIN Outlet Inlet Air handling module Air handling module Relics conservation area Soil moisture Source: Environmental Science & Technology GUILLERMO MUNRO / CHINA DAILY