• Title/Summary/Keyword: Back-fire

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The study about fire counter plan through the properties qualities research of the main temple properties in Korea (우리나라 중요사찰문화재의 문화재 보유특성 조사를 통한 화재대응방안에 관한 연구)

  • Shin, Ho-Jun;Jung, Eun-Ji;Lee, Ji-Hyang;Kim, Jung-Ho;Back, Min-Ho
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2008.11a
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    • pp.495-501
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    • 2008
  • This study analyzes into the basic fire counter plan through classifying a kind, material, and transfer of which 66 the main temple properties among 124 the main wooden properties in Korea.

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The demonstrate research for u-IT based disaster prevention system of the wooden cultural assets (우리나라 목조문화재의 u-IT기반 방재시스템 구축방안에 대한 실증 연구)

  • Kim, Jeong-Ho;Shin, Ho-Jun;Lee, Ji-Hyang;Back, Min-Ho
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2009.04a
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    • pp.210-217
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    • 2009
  • 본 연구에서는 최근 발생한 숭례문(국보 1호) 화재와 같은 문화재의 소실을 예방하고 초기 화재 진압을 위한 u-IT 기반 방재시스템 구축방안에 대한 실증연구를 목적으로 한다.

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Analysis on Deployment of Fire Service Force in Korea (한국 소방력배치의 실태 분석)

  • Back, Min-Ho;Lee, Hae-Pyeong
    • Fire Science and Engineering
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    • v.20 no.1 s.61
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    • pp.55-70
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    • 2006
  • The purpose of this study is to analyze an adequate deployment of fire service force to be prepared to respond appropriately and effectively in Korea by settlement pattern. In order to examine the deployment of fire service force by the present standard, we analyzed the logical basis and the deployment of fire service force by city and province. We also classified clusters for settlement pattern through the statistical methods and raised several points for the existing deployment model of fire service force by the classified settlement pattern. As a result, it was confirmed that the deployment of fire service force by the settlement pattern was irrelevant to fire service need.

A Study on the Change of Surface Temperature of Back Panel by Variation of the Air-Space Distances on the Inside of Curtain Wall (커튼월 내부 공기층의 BACK PANEL 표면온도에 관한 연구)

  • Lee, Duck-Hyung;Son, Won-Tug;Choi, Hyun-Sang;Choi, Young-Sik
    • Journal of the Korean Society of Industry Convergence
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    • v.14 no.3
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    • pp.87-93
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    • 2011
  • When applying back panel(this material is aluminum complex panel coated with fire resistance substances) for curtain wall, solar radiation and heat storage of indoor air occurs to result in thermal warpage for back panel. The purpose of this analysis is to find out the cause of thermal warpage and come up with a solution to prevent changes of back panel and reduce elements that bring negative visual elements. Also to solve this problem analyse that case to reduce heat transfer by inserting additional material and cases to increase air space distance.

A Study on the Pressure Change during the Pressurization to the Elevator Lobby (부속실 급기가압 시 압력특성 변화에 관한 연구)

  • Kim, Beom-Kyue;Park, Yong-Hwan;Kim, Hong-Sik
    • Fire Science and Engineering
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    • v.26 no.5
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    • pp.99-104
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    • 2012
  • This study investigated the pressure change in the fire room and elevator lobby during the air pressurization to the Elevator lobby with the various egress scenarios and the existence of vent holes in the fire room. The experiments revealed that pressure change was significantly affected by the open/closure scenarios of the front door and stairway door resulting in over pressure, under pressure and performance drop of the door closure. It also revealed that the required smoke defensive air velocity can be obtained only with the existence of vent holes in the fire room by the removal of back pressure in the fire room.

A Study on Improvement of Fire Service Deployment Standard in Korea (한국 소방력배치 기준의 개선에 관한 연구)

  • Lee, Hae-Pyeong;Back, Min-Ho
    • Fire Science and Engineering
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    • v.20 no.1 s.61
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    • pp.28-42
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    • 2006
  • The purpose of this study is to offer the improvement for deployment of fire service force in Korea by settlement patterns on the basis of analysis for the present standard and deployment of fire service force. For the adequate deployment and operation of fire service force by settlement patterns, we carried out the analysis of the present standard calculated with allocation of the authorized strength. We also classified clusters for settlement pattern through the statistical methods. We proposed the standard for deployment of fire service force reflected with environmental and need factors through the introduction of standardized index.

A Study on Characteristics and the Back Fire Limit Equivalnce Ratio of Hydrogen Fueled Engine with External Mixture (흡기관분사식 수소기관의 특성 및 역화한계당량비의 해석)

  • Paik, Sung Ho;Lee, Jong Tai
    • Transactions of the Korean hydrogen and new energy society
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    • v.7 no.1
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    • pp.55-62
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    • 1996
  • As an essential step for development of a duel injection hydrogen fueled engine which can obtain high thermal efficiency and power in overall operating range, performance and BFL(back fire limit) equivalance ratio in hydrogen fueled engine with external mixture are investigated. As the results, BFL equivalence ratio in hydrogen fueled engine with external mixture is approximately 0.7. It is deduced that controls of driving conditions are required in transient stage from external mixture type to inner injection type. And in order to increase thermal efficiency, it is also found that BFL equivalence ratio should be expanded as much as possible.

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The Characteristics of Backfire for a Free-Piston Hydrogen Fueled Engine with Reverse Uni-flow Scavenging (Reverse uni-flow 소기방식을 갖는 2행정 프리피스톤 수소기관의 역화 현상에 관한 연구)

  • Byun, Chang-Hee;Choi, Kwan-Yeon;Back, Dae-Ha;Lee, Jong-Tae
    • Transactions of the Korean hydrogen and new energy society
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    • v.21 no.2
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    • pp.98-103
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    • 2010
  • In order to develop two-stroke free-piston hydrogen engine to obtain high thermal efficiency and low emission, backfire occurrence have to be prevented. In this research, backfire characteristics are analyzed as functions of the intake valve opening timing and compression chamber pressure under piston by using RICEM (Rapid Intake Compression Expansion Machine) that has reverse uni-flow scavenging. As the result, reverse uni-flow scavenging is advantage about back fire. but, it exists suitable intake valve opening timing and its timing become known that equivalence ratio 1 retard until the piston rises. Also, To rise chamber pressure of lower piston, this does not cause backfire occurs in equivalent ratio 0.6 observed back fire. Therefore, 2cycle hydrogen fueled free-piston engine is undesirable scavenging compression by compressing the piston.

Muscuoloskeletal Disorders of Korean Fire Fighters: Applicants for Public Worker's Compensation from 2011 to 2013 (소방공무원의 근골격계 질환: 2011년~2013년 공상신청 분석)

  • Yoon, Jangwhon
    • Fire Science and Engineering
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    • v.30 no.3
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    • pp.133-137
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    • 2016
  • The aims of this study were to analyze the Korean fire fighters' applications for the public worker's compensation between 2011 and 2013 and to suggest a feasible solution for prevention of work-related musculoskeletal disorders. The Korean Ministry of Public Safety and Security provided the complete list of fire fighters' application from January 2011 to December 2013. 510 applicants with chief complaint of musculoskeletal disorders were screened out of all 1596 applicants. Male applicants were 92%. Fire fighters in their early 40's applied most frequently, followed by those in early 30's. Musculoskeletal disorders of fire fighters were reported most frequently in May and June. Regionally, Seoul had most applicants and Jeonbuk showed the highest prevalence. Low back was the most frequently reported body part followed by the knee. Ligament was insured most frequently followed by vertebral disc and bone. The fire fighter's injury occurred while fire extinguish (38.3%), emergency medical service (37.7%), rescue (12.4%), and other duties. Result of this study suggests further investigation on the large variation in regional prevalence and on the injury mechanism of musculoskeletal disorders especially during the fire extinguish and emergency medical service.

A Study on the Development of a VR Game to Experience the Fire Evacuation and its Effect Analysis (화재 탈출 체험 VR 게임 개발과 효과 분석)

  • Kim, KyungSik;Park, YongHwan
    • Journal of Korea Game Society
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    • v.20 no.2
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    • pp.153-162
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    • 2020
  • In this research, a VR game was developed to experience the fire evacuation from a fired building, intending calm and fast reaction in urgent fire situations. The user should move out through the fire door, stairs and corridors toward exit door using the VIVE controllers. When the user can't proceed the path because of fire flame or smoke, he/she should turn back to find another path. A building of Hoseo university was modeled and tests were carried out by students with polls focused on the usability and the effectiveness of this VR game. The result has been analyzed to show their responses.