第1年
通过认证 
O2 gas storage tank 17
Liquid nitorgen tank flask
Used CO2 storage Tank9
Oil Heater System
Hot Water Heating Boiler
Low liquid storage tank12
Biomass Fired Steam Boiler
High-Pressure Piston Pump
Stainless Steel Ball Valves
医用空气加压氧舱
- Tank Marerial：
- Metal tank
- Fuel：
- Liquid
- Condition：
- Used
A cryogenic storage dewar (named after James Dewar) is a specialised type of vacuum flask used for storing cryogens (such as liquid nitrogen or liquid helium), whose boiling points are much lower than room temperature.
Precautions are taken in the design of dewars to safely manage the gas which is released as the liquid slowly boils. The simplest dewars allow the gas to escape either through an open top or past a loose-fitting stopper to prevent the risk of explosion. More sophisticated dewars trap the gas above the liquid, and hold it at high pressure. This increases the boiling point of the liquid, allowing it to be stored for extended periods. Self-pressurising designs use the gas pressure in the top of the dewar to force the liquid upward through a pipe leading to the neck.
