Liquid nitrogen energy storage fire extinguishing system

Why is liquid nitrogen a fire extinguisher?

Liquid nitrogen (LN), an extinguishing agent characterized by its extremely low temperatures, liquefies at −196°C, forming a colorless and transparent liquid. Its remarkable capability to rapidly put out fires stems from its extreme coldness, leading to swift vaporization upon application of heat.

What is the extinguishing mechanism of liquid nitrogen?

The extinguishing mechanism of liquid nitrogen is discussed. The practical extinguishment calculation is analyzed. The extinguishing effect is related to the LN 2 release distance and direction.

What is the extinguishing effect of ln 2?

The extinguishing effect is related to the LN 2 release distance and direction. As an efficient and environmentally friendly cryogenic extinguishing agent, liquid nitrogen (LN 2) is highly promising for fire extinguishing in narrow and long underground confined spaces.

What is liquid nitrogen (ln 2)?

As an efficient and environmentally friendly cryogenic extinguishing agent, liquid nitrogen (LN 2) is highly promising for fire extinguishing in narrow and long underground confined spaces. It is difficult to tackle the urban utility tunnel fire due to its complex and narrow structural characteristics.

Does LN extinguish a fire?

The experimental data clearly indicate that LN disperses swiftly in relatively open environments. Although LN can effectively extinguish fires in LIBs, its cooling effect is transient, potentially exacerbating the progression of TR. To enhance the cooling effects of LN in such environments, a combined approach incorporating WM has been developed.

Does liquid nitrogen suppress TRP in a semi confined space?

The cooling performance of liquid nitrogen (LN) on LIB fire under these conditions is assessed. In addition, various synergistic cooling strategies involving LN and water mist (WM) are thoroughly investigated. The results indicate that LN is not effective in suppressing TRP in a semi-confined space.