| Autor: |
Ki-Jo Yun, Kyung-Nam Jang, Bong-Rae Park, Hee-Joog Park, Eun-Sun Baek |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Journal of Korean Institute of Fire Science and Engineering. 27:30-37 |
| ISSN: |
1738-7167 |
| DOI: |
10.7731/kifse.2013.27.3.030 |
| Popis: |
The ultimate purpose of the present study is to secure a effective method for foam liquid discharge when the mixing ratio deviates from the permissible range due to a decrease in the bypass flow rate resulting from a decrease in the cross sectional area of the foam liquid piping ranging from the branching header of one foam proportioner to the branching headers of multiple branching foam fire-extinguishing systems in the region for fire extinguishing and then to the standpipe at the lower part of the storage tank when a fire occurred in a combustible tank. To this end, the cause of mixing ratio variations following changes in the flow rates of existing foam fire extinguishing systems was analyzed, methods for compensation for constant mixing ratios were investigated, and it was proved that metering orifice replacements that could expand the cross sectional area of the stock solution inhaling piping was the most effective way for the improvement of form fire extinguishing systems` mixing ratios through foam proportioner venturi, foam chamber orifice, and metering orifice replacement experiments. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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