• Fire Science and Engineering
• /
• v.29 no.4
• /
• pp.39-48
• /
• 2015

This research was done to develop a duct-dedicated intelligent fire detection system to prevent fires and minimize fire damage of the industrial duct having a high fire risk. To understand the fire hazards of the ducts, the analysis was centered on the Daegu Textile Industrial Complex, where industrial ducts are used frequently. With this in the background, dedicated fire detectors and fire alarm control panel, which can prevent fires and to minimize fire damages to the ducts, were designed and produced, after which the performance was confirmed. As a result of performance experiments, it was shown that a duct-dedicated intelligent fire detection system had excellent adaptability and temperature accuracy. Through real-time temperature monitoring of the inside of the ducts, it was confirmed that duct fires could be efficiently extinguished by stepwise control of linkage facilities according to the setting temperature.

• Fire Science and Engineering
• /
• v.31 no.5
• /
• pp.70-77
• /
• 2017

As the quality of live gets better, the frequency of using air conditioner is along drastically increasing. On that matter, setting up measures of preventing increasing fire cases has been required. 43,413 fire cases occurred in last 2016, the cases occurred by electricity account for about 20%(8,655 cases). Among the electricity cases, the amount of cases occurred with air conditioner issues covers 1.5%; causes of the fire incidents vary, including incomplete contacts, short circuits, tracking, and such. In this study, we intend to investigate the case of ignition at the connection point where the power cord connected to the outdoor unit is arbitrarily connected during the air conditioner installation process, and to propose preventive measures against the cause in order to reduce the damage of life as well as the property from electric fire incidents.

• Journal of the Korean Society for Geothermal and Hydrothermal Energy
• /
• v.20 no.1
• /
• pp.8-15
• /
• 2024

This study aims to investigate the possibility of expanding the support program for green remodeling of fire stations and analyze the standard design guidelines. Green remodeling is essential for reducing greenhouse gas emissions and promoting green buildings, but currently, it is only conducted for buildings with limited purposes. In this study, we conduct green remodeling for fire stations with severe aging to demonstrate energy performance improvement and investigate the potential for expanding the support program to other types of aging buildings. The research methodology includes analysis of previous studies, preliminary investigation and alternative setting, energy analysis, calculation of construction costs, evaluation of the possibility of introducing support programs, and examine of the fire station standard design guidelines. The research results confirm that green remodeling can reduce energy consumption in fire stations and present the possibility of including fire stations as targets in the support program for green remodeling of public buildings.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.17 no.1
• /
• pp.1-12
• /
• 2014

Crown fire, the main propagation type of large forest fire, has caused extreme damage with the fast spread rate and the high flame intensity. In this paper, we developed the probability equation to predict the crown fires using the spatial features of topography, fuel and weather in damaged area by crown fire. Eighteen variables were collected and then classified by burn severity utilizing geographic information system and remote sensing. Crown fire ratio and logistic regression model were used to select related variables and to estimate the weights for the classes of each variables. As a results, elevation, forest type, elevation relief ratio, folded aspect, plan curvature and solar insolation were related to the crown fire propagation. The crown fire propagation probability equation may can be applied to the priority setting of fuel treatment and suppression resources allocation for forest fire.

• Fire Science and Engineering
• /
• v.28 no.1
• /
• pp.31-36
• /
• 2014

Recently, the safety assessments with using the various evacuation programs are performed for improving the performance of fire and evacuation safety in the building. Generally, the evacuation programs can simulate the human behavior in fire situation by applying the variation of the movement speed and Fractional Effective Dose (FED) index in the smoke. However, if the simulation is performed without optional setting around the fire, the agents do not avoid the fire and they move through the fire. Therefore in this study, we define the radiative repulsion force which exists between the fire and the agents. Moreover, we modify the Helbing's movement model by adding the radiative repulsion force. As a result of the modified movement model, all agents move around the fire and they do not enter the upper bound area of radiative heat flux, $2.4kW/m^2$. From these results, we verified the reliability of the modified movement model.

• Fire Science and Engineering
• /
• v.24 no.1
• /
• pp.95-102
• /
• 2010

The combustion characteristics of roof 'Jucsim' structure was analysed using real scale fire test on wooden structure heritage building. the fire test model was made to consider roof timberling internal structure for a Sunglemun. Structure of test body layed lime, soil, 'Jucsin' and ceiling board excepting roof tile to find heat propagation process by setting thermocouples. The first test to find fire growth and heat propagation process in the part of ceiling. The second test organized to find the efficiency of fire proof paint between ceiling board and inside of Jucsim structure. The third test try to get the performance level of fire proof fabric with the same manner. The result showed from the test proof the heavy smoke exposure with limited effect of fire proof paint however, reliable fire resistance effect showed in case of fire proof fabric.

• Fire Science and Engineering
• /
• v.33 no.6
• /
• pp.159-164
• /
• 2019

This study aims to minimize casualties in the event of an apartment fire by developing a virtual reality (VR) fire-training program (using the latest IT techniques) and verifying its validity as a learning tool. For this purpose, environmental parameters, such as the unit floor's size and the composition of the family, were established. Then, possible fire scenarios that could occur in the apartment building were developed and implemented in a VR setting. Finally, a survey was conducted to review the responses to the program. The results of the survey demonstrated that the responses were positive, confirming the effectiveness of the program.

• International Journal of Advanced Culture Technology
• /
• v.9 no.3
• /
• pp.360-366
• /
• 2021

In this study, we tried to examine how the kinking of the fire hose affects the time taken for initial water discharge by measuring and analyzing the time taken for initial water discharge with different number of kinks at different locations of the hose. The average time taken for initial water discharge was obtained by measuring the time in the unkinked state of the fire hose. Based on this standard, we conducted the experiment by selecting the kinking locations in the hose near the water outlet and nozzle, and setting the number of kinks to 3, 6, 9, and 12. The results of this study are as follows: First, if the fire hose has 5 kinks or more near the nozzle, no water was released. Second, when comparing the case of no kinks and 4 kinks near the nozzle, there was no significant difference in the time taken for initial water discharge. Third, when the fire hose was kinked 10 times near the outlet, the time required for initial water discharge increased by 1.62 seconds on average compared to the case with no kinking, but there was no problem with water discharge. Lastly, regarding the kinking locations of the fire hose, it was found that the greater the number of kinks near the nozzle than near the outlet, the greater the effect on the discharge. As a result, it is concluded that it would be preferable to install non-kinking devices near the nozzle of the fire hose.

• Journal of the Korean housing association
• /
• v.18 no.5
• /
• pp.133-141
• /
• 2007

The purpose of this study is to secure an evacuation time and to ensure safety by using an Ubiquitous Sensor Network computing when a fire breaks out at a super high-rise apartment housing. A super high-rise apartment housing that is a type of building to solve the problem of separation of the urban function and the phenomenon of hollowing out downtown has been on the increase, high-rise apartment housings occupying 52.7% of whole housings in 2005. However, if a fire breaks out, there would be serious damage since it accommodates many people and facilities as existence of vertical gigantism in the city. The architectural law in force has no clause on it which is universally applicable to general building, it is difficult to be applicable to a densely super high-rise apartment housing and there would be in danger of a resident's evacuation in the fire. Therefore, as a previous study to introduce an USN-based fire-warning facility and evacuation equipment, this study shows the improvement way after analyzing factors that are barriers to evacuaee's behavior of a super high-rise apartment housing and also shows establishment of the grade of vertical evacuation rank by SimuleX, one of the best computer simulation program.

• 한국방재학회:학술대회논문집
• /
• 2007.02a
• /
• pp.555-560
• /
• 2007

This paper focused on the ways of disater prevention and risk analysis of the passengers setting up the hypothesis when urban rapid transit broke out fire in subway tunnel which is PSD(Platform Screen Door) installed environment. compared the flud dynamic changes and evacuation specifications whether PSD being installed or not, tried to search the effective ways for sustaining passengers safety.