Thermal insulation and heating
Thread Content
Do the instruments on the nitrogen pipeline need insulation?
Insulation shouldn’t be used, as its purpose is to prevent phase changes in the materials, avoid energy loss, and protect against burns caused by high temperatures. Instrument air mainly consists of oxygen and nitrogen; nitrogen turns into a liquid at -195.8°C, and it becomes solid at -209.8°C. Oxygen turns into a liquid at 183°C and becomes solid at 218.4°C； It can be seen that insulation is not necessary.
Of course not, the dew point of nitrogen is definitely lower than the lowest ambient temperature, so freezing is impossible.