Temperature Reduction Effect in a Fully Developed Compartment Fire by Water Application

• 발행기관: 한국화재소방학회
• 저자명: Chia-Hsin Chen Masaki Noaki Yoshifumi Ohmiya Jun-ichi Yamaguchi
• 간행물 정보: 『International Journal of Fire Science and Engineering』Vol. 39, No. 2, 10~30쪽, 전체 21쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2025.06.30

국문 초록

To quantify the temperature reduction resulting from the effect of water sprinkling under a fully developed fire in a compartment, a series of heating and water sprinkling experiments were simultaneously conducted in a refractory furnace (4 m × 4 m × 2 m). The cooling effect of each experiment was examined by varying factors, such as the sprinkler head, water flow rate, spray height, and so on. The results of the experiments revealed that temperature reduction by water spraying is smaller as temperature in the fire room is lower. An estimation model of water evaporation rate based on the mass balance in the furnace was validated by comparing it with the experimental data on evaporation rate. Moreover, the cooling effect of water ranged from 15.4% to 73% according to heat balance analysis in the furnace. Furthermore, this study indicates that increasing the water flow rate can enhance the cooling effect. However, there is upper limits of the cooling effect under conditions that the temperature of the water sprayed surface was below 100 °C because water is hard to evaporate on the surface.

목차

1. Introduction

2. Experiments

3. Analysis

4. Conclusions

References

키워드

Temperature decrease Fully development fire Refractory furnace Water evaporation Heat balance analysis