- Author
- Sekizawa, A. | Takemoto, A. | Kozeki, D. | Yanai, E. | Suzuki, K.
- Title
- Fire Detection and Extinguishment by Sprinkler System of Residential Fires: Experiments by Wooden Crib Fire Source.
- Journal
- Report of Fire Research Institute of Japan, No. 80, 1-13, September 1995
- Keywords
- residential buildings | fire detection | extinguishment | sprinkler systems | crib fires | wood | experiments | living rooms | residential sprinklers
- Abstract
- ONLY ABSTRACT IN ENGLISH Fire experiments were conducted in a real scale room which is assumed to be a residential living room (the area is about 8 tatami mat room). Concentrations of oxygen and carbon monoxide, smoke density, and temperature were measured. Response of fire detection by several sensing methods and extinguishing effectiveness of residential sprinklers were also examined under the various opening conditions and locations of wooden crib fire source. From the results of the experiments, the following were obtained. (1) Maximum mass loss of wooden crib by combustion until activation of sprinklers was less than 1 kg. Therefore, the fires burnt under the fuel control condition. In this condition, it was confirmed that the residential sprinkler systems can control the wooden crib combustion sufficiently. (2) In some experiments, the smoke density and the CO gas concentration increased after activation of sprinklers because of stirring air by sprinklers. (3) It was found that even a small obstacle located close to a sprinkler head has much influence to water sprinkler patterns. (4) In most of the experiments, it was found that the response time of all the fire detection methods used in the experiments; rate of rise heat detection method, fixed temperature type heat detection method, photoelectric type smoke detection method, and multi sensor with fuzzy reasoning method are less than the response time of the sprinkler.