Chan-Sol Ahn
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View article: Multi-Objective Optimization of Natural Lighting Design in Reading Areas of Higher Education Libraries
Multi-Objective Optimization of Natural Lighting Design in Reading Areas of Higher Education Libraries Open
Effective natural lighting in university library reading areas significantly influences users’ visual comfort, task performance, and energy efficiency. However, existing library lighting designs often exhibit problems such as uneven illumi…
View article: Multi-objective Optimization of Natural Lighting Design in Reading Area of Higher Education Libraries
Multi-objective Optimization of Natural Lighting Design in Reading Area of Higher Education Libraries Open
The lighting conditions of university libraries directly influence reading comfort, learning efficiency, and energy consumption. However, the current lighting design still faces problems such as uneven illumination distribution, severe gla…
View article: Design Prediction Equation for Plant Facilities: A Study Using the Pool Fire Radiant Heat Flux Estimation Method
Design Prediction Equation for Plant Facilities: A Study Using the Pool Fire Radiant Heat Flux Estimation Method Open
This study derived a range of results based on all variables corresponding to a prediction formula for wind and wind-free conditions proposed by fire dynamics tools (FDTs), to estimate the radiant heat flux generated by pool fires. A metho…
View article: Fire performance, toxicity, and thermal diffusivity of wastepaper mixed with magnesium hydroxide, depending on the particle size of expandable graphite
Fire performance, toxicity, and thermal diffusivity of wastepaper mixed with magnesium hydroxide, depending on the particle size of expandable graphite Open
As the construction of high-rise buildings increases to solve residential spaces caused by high density population concentration, the occurrence of fire accidents in high-rise buildings is also increasing. The primary cause of fire damage …
View article: Convection Cooling Enhancement for Energy Conversion Systems Using Rhombic-Dodecahedral-Zeolitic-Imidazolate-Framework-8-Nanotextured Surfaces
Convection Cooling Enhancement for Energy Conversion Systems Using Rhombic-Dodecahedral-Zeolitic-Imidazolate-Framework-8-Nanotextured Surfaces Open
Evaporative cooling is an efficient approach for removing heat from nuclear reactors, solar power plants, solar panels, and energy storage devices, such as lithium-ion batteries and fuel cells. Nanotextured surfaces can provide improved ev…
View article: Natural convection in vertical solar heat collector nanotextured with reduced graphene oxide and silver nanowires
Natural convection in vertical solar heat collector nanotextured with reduced graphene oxide and silver nanowires Open
In this study, a vertical shaft is coated using silver nanowires (AgNWs) together with reduced graphene oxide (rGO) via the supersonic spray-coating technique to enhance the absorption of solar radiative heat for use in solar air heaters. …
View article: Numerical Study of the Factors Affecting Evacuation in Multi-Family House Fires
Numerical Study of the Factors Affecting Evacuation in Multi-Family House Fires Open
In this study, a numerical analysis was conducted on the factors affecting evacuation when fires occur in multi-family houses. The parameters of fire size, growth rate, and location, as well as open or closed corridor-window conditions wer…
View article: A Study on the Reliability of Mass, Density, and Fire Performance of Recycled Wastepaper Building Finishing Material Made with Large Wet Cellulose 3D Printers
A Study on the Reliability of Mass, Density, and Fire Performance of Recycled Wastepaper Building Finishing Material Made with Large Wet Cellulose 3D Printers Open
The impact of non-face-to-face contact following the COVID-19 pandemic has emerged as a social problem and has increased the amount of wastepaper, mainly in home delivery boxes. The appropriate recycling of paper waste is an area where sus…
View article: A Study on the Safety Evaluation of Escape Routes for Vulnerable Populations in Residential Facilities
A Study on the Safety Evaluation of Escape Routes for Vulnerable Populations in Residential Facilities Open
The continued increase in human lifespans is accelerating the aging of the population in most countries. The increase in elderly care facilities corresponds to a relative increase in the number of people who are vulnerable in the context o…
View article: Experimental and Numerical Study on the Plume Rising in Stairwell of Buildings
Experimental and Numerical Study on the Plume Rising in Stairwell of Buildings Open
In recent years, it has been observed that when a fire occurs in a multi-use facility, a toxic fire smoke rapidly rises through the vertical shaft and spreads due to the chimney effect and hot buoyancy. Generally, the fire smoke spreads ra…
View article: Effect of Low ALR on the Spray Characteristics of a Pressure-swirl Duplex Nozzle
Effect of Low ALR on the Spray Characteristics of a Pressure-swirl Duplex Nozzle Open
The objective of this study is to investigate the effect of the air-to-liquid ratio (ALR) in a low range on the characteristics of the spray issuing from a pressure-swirl duplex nozzle. In this study, the pressure-swirl duplex nozzle was u…
View article: Numerical Study on Vertically Rising Time of Plumes in Stairwells of High-rise Buildings
Numerical Study on Vertically Rising Time of Plumes in Stairwells of High-rise Buildings Open
The vulnerabilities of high-rise buildings to fires and the safe evacuation of the occupants therein have been consistently highlighted in the media. Unexpected natural disasters that occur frequently such as earthquakes increase the poten…
View article: Theoretical and Numerical Study on the Plume Rising by Spherical Heating Element
Theoretical and Numerical Study on the Plume Rising by Spherical Heating Element Open
Contaminants and particulate matter in the air are known to be serious health threats to the elderly and children with poor respiratory function. In order to filter such fine particles in the air, a household air cleaning device can be use…
View article: Experimental Study for Smoke Diffusion in a Vertical Cylinder
Experimental Study for Smoke Diffusion in a Vertical Cylinder Open
This experimental study was conducted to investigate the spread of fire smoke through the vertical penetration passage of a skyscraper. Vertical cylinders were used to observe the smoke diffusion phenomenon in the vertical direction, and t…
View article: Numerical Study of the Wall Effect on the Diffusion of Smoke in a Vertical Channel
Numerical Study of the Wall Effect on the Diffusion of Smoke in a Vertical Channel Open
The study of column dynamics in high-rise buildings is a subject of interest for building engineers because of their safety implications. In this study, a numerical analysis is performed using Fire Dynamics Simulator considering the temper…
View article: Publisher’s Note: “Breakup process of cylindrical viscous liquid specimens after a strong explosion in the core” [Phys. Fluids 28, 094105 (2016)]
Publisher’s Note: “Breakup process of cylindrical viscous liquid specimens after a strong explosion in the core” [Phys. Fluids 28, 094105 (2016)] Open
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View article: Design of Mechanical Smoke Exhaust System in Large Space of Convention Center
Design of Mechanical Smoke Exhaust System in Large Space of Convention Center Open
The volumetric flow rate of smoke generated from the fire in large space often reaches to hundreds of thousands CMH because of extended floor height and as it’s more difficult to isolate the smoke to the limited area, comparing to normal-s…
View article: Breakup process of cylindrical viscous liquid specimens after a strong explosion in the core
Breakup process of cylindrical viscous liquid specimens after a strong explosion in the core Open
Basic understanding and theoretical description of the expansion and breakup of cylindrical specimens of Newtonian viscous liquid after an explosion of an explosive material in the core are aimed in this work along with the experimental in…