Comparison Program | Pressure water mist | Medium and low pressure water mist (water spray) | Water spray | Dry powder | Gas |
Cooling effect | The strongest | Strong | General | General | No |
Stifling effect | In a fire, only | Limited | No | General | Filled the entire space |
Impact on the human body | Security | Security | Security | Irritation of the respiratory | Caused suffocation |
Environmental pollution | No | No | Water consumption | Chemical pollution | Cause the greenhouse effect |
Warning time | Do not need to | Do not need to | Do not need to | Need | Essential |
Electrical parts | Small | Large | Large | Large | Small |
Regional isolation requirements | Do not need to | Do not need to | Do not need to | Do not need to | Essential |
Secondary filling fee | Do not need to | Do not need to | Do not need to | High | High |
Maintenance costs | Very low | Low | Low | High | High |
Explosion Hazards | No | No | No | Have | Have |
Water loss | Very small | Large | Large | No | No |
Life | 60 years | 10 to 15 years | 10 to 15 years | 2 to 3 years | 2 to 3 years |
Space | Small | Large | Large | Small | Large |
Causticity | No | No | No | Large | Large |