다양한 습도발생 환경에 따른 연기감지기 작동 특성에 관한 실험적 연구

Experimental Research on Operation Characteristics of Smoke Detection Equipment with respect to Varying Humidity Environments

본 논문은 습도발생 환경에 따라 연기감지기 작동 특성에 관한 실험적 연구이다. 습도에 의한 연기감지기 작동특성을 관찰하기 위해 ISO 9705의 표준룸 규격을 참고하여 실험체를 제작하였고 습도발생 조건은 미분무 발생장치,가습기, 커피포트, 가스버너를 활용한 물 끓임으로 습도를 발생시켰다. 습도 80%에서 정적인 경우에는 연기감지기작동 특성이 크게 발생되지 않았고, 동적기류 0.8 m/s에서 작동특성이 나타나면서 3.0 m/s 보다 1.5 m/s에서 가장 활발한 연기감지기 작동특성이 나타났다. 또한 물안개 현상이 발생되지 않는 가스버너를 활용한 습도실험에도 연기감지기 1종 작동농도 7.5 %/m까지 연기농도가 측정됨에 따라서 물안개(스팀) 현상이 발생되지 않아도 충분히 습도에의한 비화재보의 가능성을 확인하였다.

In this study, experimental research is conducted on the operation characteristics of smoke detection equipment inenvironments with varying humidity levels. To examine the smoke detection equipment’s operation characteristics withrespect to humidity, we manufactured an experimental equipment based on the standard room size specified in ISO 9705. Furthermore, humidity was generated by boiling water via water mist generator, humidifier, coffee pot, and gas burner. Hence, in the static case under 80% humidity, the operation characteristics of the smoke detection equipment were notaffected. However, the operation characteristics were observed under a dynamic airflow of 0.8 m/s. Furthermore, the mostactive operation characteristics were identified at dynamic airflow of 1.5 m/s as opposed to 3.0 m/s. Additionally, in thehumidity experiment utilizing a gas burner, the water fog phenomenon was not observed. The smoke concentration,measured via the type one operation of the smoke detection equipment, was 7.5% /m. Hence, we sufficiently confirmedthe potential of false alarms due to humidity even without the occurrence of the water fog (steam) phenomenon.