Airtight constant humidity (low oxygen) warehouse

Home > Application > Airtight constant humidity (low oxygen) warehouse

The Capital Museum——Airtight and constant humidity (low oxygen) displaying warehouse & Cultural relics humidity controlled drying and dehydration system

Airtight and constant humidity (low oxygen) displaying warehouse

 

Customer demand

Collections can be viewed without entering into the warehouse

The perfect air tightness of the warehouse should ensure a stable humidity fluctuation

Make sure the mould, oxidation, hydrolyzation and degradation won’t happen in silk fabrics

Realizing the displaying and preventive conservation of cultural relics

 

Solution

Setting up an airtight glass warehouse in the present warehouse

Equipped with constant humidity, air cleaning and low oxygen module

 

Equipment and devices

Airtight displaying warehouse, air compressor, nitrogen generator and controller, humidifier, oxygen generator, safety monitor and controller.

 

Main indicators

Volume: 210m3

Oxygen concentration: 1%~21%

Humidity: 20%~60%RH(20℃)

 

Statistics 

The total volume of warehouse is 210m3 and the air change rate reaches 0.009d-1. Daily oxygen fluctuation is 0.16% and humidity remains stable. After cutting off the power for two weeks, the outside humidity fluctuation is 16.7%RH, and the inside daily humidity fluctuation≤2.5%RH.

 

Cultural relics humidity controlled drying and dehydration system

 

Customer demand

The impressing need to protect the Ming dynasty coffin, which is seriously affected by the environmental deterioration

Create an environment that similar to the buried condition to avoid the cracking, deformation and mould and insect infection

Create an “controlled humidity, clean and stable” environment

Try to solve the problem of non-waterlogged lacquered wood protection in Northern China

 

Solution

An 79m3 airtight glass warehouse in the present warehouse could avoid the waterlogged status of wood collection.

In order to avoid temperature changing or internal humidity saturation, condensation water dropping on the cultural relics, the ceiling of the warehouse is designed with a slope which can effectively mitigate the condensation water gathering.

Equipped with module of parameter monitor, air cleaning, humidity control, mould prevention and bacteria inhibition, remote control.

 

Equipment and devices

Humidity control device, air tight display warehouse

 

Main indicators

Humidity: 95%RH

Humidity fluctuation:±5%RH

Air cleaning and ventilation function

Humidity setting, automatic monitor, display and memory of relevant data

Automatic alarm

 

Statistics

Over the past four years, the relative humidity of the warehouse has been reduced from 95% to 70%, and the daily humidity fluctuation≤3%. As the lacquer coffin gradually dehydrated, the painting and structure of the coffin are well preserved.

According to the test and statistics, the air exchange rate stood at 0.03d-1, which is superior to the standard of T/WWXT 0029-2018《The standard of controlled atmosphere warehouse》.

 

The Capital Museum——Airtight and constant humidity (low oxygen) displaying warehouse & Cultural relics humidity controlled drying and dehydration system

  • wechat