Air curtain as a protection in cultural heritage

Every year millions of people visit the works of art placed in museums, which aren’t the safest place to protect cultural heritages from air pollutants. The use of air curtains may often represent a protection for the cultural heritage without operating on the material of the objects, and without limiting the perception of the work of art. The aim of this work consists of the characterisation of this device, which is widely used in industry, but not yet frequently adopted in the field of conservation of works of art. As a matter of fact, the employment of air curtains to segregate pollutant diffusion near the sources of fire prevention is actually more and more diffused in industry buildings. Their success is due to the peculiarity to separate zones without fixed barriers which would interfere with people and equipment.