Airtight constant humidity (low oxygen) showcase

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China Railway Museum———Low oxygen controlled atmosphere showcase system & Low oxygen controlled atmosphere cabinet system

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》.

 

China Railway Museum———Low oxygen controlled atmosphere showcase system & Low oxygen controlled atmosphere cabinet system

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