보고서 정보
주관연구기관 |
한국건설기술연구원 Korea Institute Of Construction Technology |
보고서유형 | 1단계보고서 |
발행국가 | 대한민국 |
언어 |
한국어
|
발행년월 | 2015-12 |
주관부처 |
미래창조과학부 Ministry of Science, ICT and Future Planning |
연구관리전문기관 |
한국건설기술연구원 Korea Institute Of Construction Technology |
등록번호 |
TRKO201600004123 |
DB 구축일자 |
2016-08-06
|
키워드 |
대공간.화재.연기제어.연기유동.배연효과.피난안전.연기제어 시나리오.연결공간.공기수막 스크린.방연설비.
|
초록
본 과제의 최종목표는『인명피해 최소화를 위한 대공간의 대용량 연기제어 설비기술 개발』이며, 이러한 대공간의 연기안전 기술 확보를 위해 1~3차년도인 1단계 연구에서는 『연기처리율 90% 성능의 대공간 연기제어 설계기술 확립』과 『대공간 연결공간의 방연설비 개발』을 중점적으로 수행하였다. 구체적인 연구수행 결과로는 ① 국내외 대공간 연기제어 기준 분석, ② 대공간 연기유동 해석 기술 개발, ③ 대공간 연기제어 시나리오 작성, ④ 대공간 연기제어 시스템 설계 수행, ⑤ 대공간 방연설비 설계 및 효과분석의 연구를 체계적으로 수행하였다
Abstract
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Ⅲ. Result of Study
The ultimate goal of this project is『Development of large space large capacity smoke control facility technology to minimize loss of life』, and to ensure the smoke safety technology of such large spaces, in this stage, the first year to the third year, 『Establishment of smoke c
Ⅲ. Result of Study
The ultimate goal of this project is『Development of large space large capacity smoke control facility technology to minimize loss of life』, and to ensure the smoke safety technology of such large spaces, in this stage, the first year to the third year, 『Establishment of smoke control design technology of 90% exhaust rates』and 『Development of smoke proof facilities for connected spaces』was conducted. As the specific research outcome, ① Analysis on large space smoke control design standards, ② Development of large space smoke flow analysis technology, ③ Establishment of smoke control scenarios for large space, ④ Carry out of design for large space smoke control system, ⑤ Design of smoke proof facilities and analysis of its effects, were systematically implemented.
(1) Analysis of large space smoke control design standards
In this research, an analysis on domestic and overseas large space smoke control design standards have been conducted. The domestic design standards on smoke control is being proposed limited mainly to living rooms and evacuation stairways, and installation target regulations on large spaces are absent and appropriate design standards for large spaces are not being proposed. In contrast, in advanced foreign countries, design standards suitable to the definition on large spaces and installation target regulations of smoke control facilities are proposed along with the design standards suitable for large space. Mainly in 1990s, the design for large space smoke control system was implemented as a concept of Air Change per Hour(ACH), and the design of Smoke Layer Heigh(SLH) concept was applied in 2000s. And domestic standard of smoke control system and foreign standard, such as NFPA101, NFPA92B, IBC, EN12101-5, The building standard law of Japan were analyzed.
(2) Development of large space smoke flow analysis technology
In order to develop an analysis technology on the flow field of the smoke generated at fire in a large space, the large space of Murcia Test was selected as the analysis target, the test conditions of Murcia Test were analyzed, and the smoke flow was analyzed by using a CAE based numerical analysis method. The accuracy and reliability of the numerical analysis was secured by comparing and analyzing the numerical analysis and the test result, and based on this, the analysis was conducted on the structure of a large space and by fire conditions. Firstly, analyses on the inlet and outlet structures on a large space and by the caloric value conditions were conducted, and for the analysis result under the condition of the inlet area 20~100 % with outlet flow 50~100 % and caloric value 0~100 %, impact of the inlet area was very little, and at the reduction of the outlet flow, the smoke density at the overall region of large space increased, and at the increase of the caloric value, the smoke density slightly increased at the bottom region of large space.
(3) Establishment of the scenario on smoke control in a large space
The objective of smoke control and various factors that may influence on smoke flow and control in a large space were reviewed, which was then compiled into smoke control scenario. Influential factors on smoke flow inside building have various design values depending on condition and the designer shall select the scenario considering the object for application and environment. Smoke control scenario in a large space comprises the smoke control objective and environment, which was summarized in this study. Case Study on smoke flow of a large space was conducted at P project comprising 3 buildings including office building, shopping center and hotel. Office building was a 69-story high-rise building, shopping center was a 8-story building and hotel was a 32-story building. A large space was included in shopping center and hotel. Smoke control design was first reviewed and smoke control analysis condition was determined by applying smoke control scenario and then 3D precision smoke flow numerical analysis was followed and the outcome was analyzed in a number of ways.
(4) Carry out of design for large space smoke control system
Design of mechanical smoke control for a large space was carried out based on existing design standard with regard to large space model and numerical analysis was also carried out using 3D numerical analysis method. Numerical analysis was carried out while changing flow rate of mechanical exhaust, which was followed by analysis of the result. As a result of implementing the design by incorporating major design factors including thickness of smoke layer, heat release rate, mass flow rate of plume, air supply velocity, maximum flow rate per exhaust outlet and minimum distance between exhaust outlets, total exhaust flow rate was calculated as 527,459 CMH when building height was 25m and heat release rate of steady state was 5,275kW. While calculations for change of exhaust flow rate was carried out, the height of smoke layer maintained suitable for design value until decrease to 86 % of flow rate. Based on these results, application effects of design technology were analyzed.
(5) Design of smoke proof facilities and analysis of its effects
More than 70% of the fatalities by fire is attributable to smoke and thus the importance of smoke control system is increasingly emphasized in a bid to deal with the smoke that has threatened the life safety. In this study, air curtain system containing supply nozzle and exhaust hood is proposed as smoke blocking system and a full-scale test device was fabricated to measure the jet flow as well as 3D numerical analysis under the same condition was implemented. Furthermore, smoke blocking effect of air curtain system was numerically analyzed, focusing on ejection velocity of supply nozzle and smoke flow velocity.
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