Study on the Fire Behavior of Spring Bed Mattress with and Without a Cooling Frame

Bo-Youl, Seo; Kye-Won, Park; Won-Hwa, Hong

doi:2018.32.2.24

Fire Sci. Eng. > Volume 32(2); 2018 > Article

Fire Science and Engineering 2018;32(2):24-29.
DOI: https://doi.org/10.7731/KIFSE.2018.32.2.024 Published online April 30, 2018.

냉각프레임 설치 유무에 따른 스프링 침대 매트리스의 화재성상에 관한 연구

서보열, 박계원, 홍원화

¹방재시험연구원
²방재시험연구원
³경북대학교 건축학부

Study on the Fire Behavior of Spring Bed Mattress with and Without a Cooling Frame

Seo Bo-Youl, Park Kye-Won, Hong Won-Hwa

¹Fire Insurers Laboratories of Korea
²Fire Insurers Laboratories of Korea
³School of Architecture, Kyungpook National Univ.

요약

스프링 침대 매트리스의 화재안전성을 향상시키기 위한 방안으로 냉각재료(물)을 포함한 냉각프레임을 제작하여 침대 매트리스 아래 또는 침대 매트리스와 침대 매트리스 받침대 사이부분에 냉각프레임을 설치하여 냉각프레임 설치 유무에 따른 실물규모 화재시험을 실시하였다. 시험 초기(약 3분)에는 비슷한 화재성상을 보이나 이후에는 냉각프레임이 없는 경우는 급격한 화재성장이 확인 되었으며, 냉각프레임이 있는 경우는 성장되지 않고 쇠퇴가 진행되었다. 침대 매트리스 상단표면에서의 화염전파는 반원방향으로 유사하게 진행되었으며, 평균 화염전파속도는 약 0.005 m/s 분석되었다. 최대화염높이는 냉각프레임이 없는 경우 약 2.7 m, 냉각프레임이 설치된 경우 약 1.8 m로 분석되었다. 또한 최대열방출율(Heat release rate)은 냉각프레임이 없는 경우는 약 740 kW, 냉각프레임이 설치된 경우는 약 400 kW 측정되었다. 결과적으로 냉각프레임 설치를 통해 침대 매트리스 화재시 화염높이 및 열방출율이 저감되는 것으로 확인되었다.

Abstract

To improve the fire safety of spring bed mattress, a cooling frame including cooling material (water) was made and a cooling frame was installed under the bed mattress or between the bed mattress and bed mattress base; fire tests (real scale) were conducted with or without a cooling frame. Similar fire behavior was observed at the beginning of the test (approximately 3 minutes). Subsequently, rapid fire growth in the mattress without a cooling frame, but with a cooling frame, the decline progressed without growth. The flame spread on the top surface of the bed mattress was similar in the semicircular direction, and the average flame speed velocity was analyzed at approximately 0.005 m/s. The maximum flame height was found to be approximately 2.7 m without a cooling frame, and approximately 1.8 m with a cooling frame installed. In addition, the maximum heat release rate was measured to be approximately 740 kW without a cooling frame, and approximately 400 kW with a cooling frame installed. As a result, the flame height and heat release rate were reduced when the bed mattress was fired through the installed cooling frame.

Key Words: Spring bed mattress, Cooling frame, Mock-up test, Fire behavior, Heat release rate