Low oxygen controlled atmosphere showcase system
Customer demand
The exhibition need of cultural relics and needs to meet the display and storage of different cultural relics.
Solution
33 sets of airtight showcase and one nitrogen display and control system
Oxygen content and humidity parameters of each showcase can be set independently
Using low reflection glass to ensure the favorable viewing
The showcase is painted in according with the style of exhibition hall
The air channel and cables are perfectly hidden
The design also takes into account the possibility of capacity expansion
Equipment and devices
Air compressor, nitrogen generator and its controller, two sets of nitrogen generator and controller, 33 sets of low oxygen showcase
Main indicators
Air exchange rate: ≤0.02d-1
Oxygen concentration: 2%~15%
Humidity: 30%~65%RH (20℃)
Humidity accuracy: ≤±3%RH
Humidity fluctuation: ≤5%RH
Low oxygen controlled atmosphere showcase system
Customer demand
The preventive conversation of different types of cultural relics in Zhengyangmen exhibition hall
Solution
5 sets of airtight cabinet (3m3), using one nitrogen generator and controller
The size of cabinet is customized
Each cabinet is independent from each other, and parameters can be set and controlled separately to meet the classification and storage of cultural relics with different textures
Equipment and devices
One set of nitrogen generator and controller, five sets of low oxygen cabinet
Main indicators
Air exchange rate: ≤0.02d-1
Oxygen concentration: 1%~21%
Humidity: 30%~65%RH (20℃)
Power supply: AC220V/50Hz/2kW
Statistics
According to the Joint Laboratory of Inspection and Testing of cultural relics protection equipment (Technology Center of Cultural Relics Protection of Shanghai Museum), the air exchange is 0.01d-1, 0.012d-1 respectively, which is 40 times superior to the standard of GB/T 36110-2018《Airtightness and inspection of cultural relics showcase》. In addition, formaldehyde content is zero, VOC≤318ppb, formic acid≤3.25μg/m3, acetic acid≤47.58μg/m3. The inside pollutant, humidity accuracy, and fluctuation meet the requirement of the GB/T 36111-2018《Airtightness performance and testing of cultural relics showcase》.
