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Article
An experimental study on the thermal and fouling characteristics in a washable shell and helically coiled heat exchanger by the Wilson plot method
Brazed plate heat exchangers (BPHEX) are broadly used in water source heat pump systems for their large heat transfer capacity. Despite their high heat transfer rate, their high-performance rate tends to decre...
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Chapter and Conference Paper
Design and Implementation of IoT-Based Intelligent Condition Management System for the Industrial Facilities
A condensation phenomenon occurs when the water vapor in the air turn into water droplets. Many industrial facilities are damaged by the condensation phenomenon. An ammunition storage is one of the facilities ...
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Article
Optimum conditions for cultivation of Chlorella sp. FC-21 using light emitting diodes
The purpose of this study was to determine the optimum conditions for the cultivation of Chlorella sp. FC-21 under light-emitting diodes (LEDs). Specific growth rates and Chlorella cell concentrations were measur...
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Article
An experimental study on the performance of a condensing tumbler dryer with an air-to-air heat exchanger
The performance of energy consumption in the closed-loop tumbler dryer with a condenser for clothes drying is evaluated as a function of the heater capacity, the drying air flow rate inside the dryer, and the ...
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Article
Removal characteristics and distribution of indoor tobacco smoke particles using a room air cleaner
The objective of this study is to analyze the removal characteristics and distribution of indoor air pollutants by a room air cleaner. A pollutant removal effect according to room volume and measurement point ...
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Article
Synergistic effect of a coating and nano-oil lubricant on the tribological properties of friction surfaces
In this study, we evaluated the tribological properties of grey cast iron (GC200) surfaces with and without MoS2 coating that were lubricated with either mineral oil or mineral oil in which fullerene nanoparticle...
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Article
Effect of the size and morphology of particles dispersed in nano-oil on friction performance between rotating discs
Various carbon-based particles such as graphite, carbon black, graphite nanofibers and carbon nanotubes were dispersed in mineral oil to systematically examine the effect of the size and shape of particles on ...
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Article
Open AccessRound-robin test on thermal conductivity measurement of ZnO nanofluids and comparison of experimental results with theoretical bounds
Ethylene glycol (EG)-based zinc oxide (ZnO) nanofluids containing no surfactant have been manufactured by one-step pulsed wire evaporation (PWE) method. Round-robin tests on thermal conductivity measurements o...
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Article
A study on the optimal design of a cyclone system for vacuum cleaner with the consideration of house dust
Cyclone, a type of particle collector widely used in the field of ambient sampling and industrial particulate control, is the principal type of gas-solids separator that use a centrifugal force. The goal of th...
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Article
Comparison of tribological characteristics between aluminum alloys and polytetrafluoroethylene composites journal bearings under mineral oil lubrication
This study examined the tribological behavior of journal bearings made from polytetrafluoroethylene (PTFE) composites and aluminum (Al) alloys. The PTFE composite journal bearings consisted of a steel backing ...
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Article
Heating performance of a ground source heat pump system installed in a school building
The heating performance of a water-to-refrigerant type ground source heat pump system is represented in this paper under the actual working conditions of the GSHP (ground source heat pump) system during the wi...
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Article
Understanding the Role of Nanoparticles in Nano-oil Lubrication
A disc-on-disc type tester was used to examine the role of fullerene nanoparticles dispersed in a mineral oil-based lubricant. In the friction test, the friction coefficient of the disc specimen immersed in th...
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Article
Estimation of appropriate capacity of ventilation system based on the air infiltration rate in Korean classrooms
The appropriate capacity of a ventilation system based on the air infiltration rate in Korean classrooms is investigated to obtain optimal design conditions for ventilation systems. Theoretical and the experim...
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Article
Enhancement of Lubrication Properties of Nano-oil by Controlling the Amount of Fullerene Nanoparticle Additives
In this article, the tribological properties of fullerene nanoparticles-added mineral oil were investigated as a function of volume concentration of fullerene nanoparticle additives (e.g., 0.01, 0.05, 0.1, and...
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Article
Oxygen aging of SRC-III heavy distillate
The aging of SRC-II heavy distillae has been studied under oxygen or nitrogen atmospheres at a temperature of 60‡C for one month. 1R spectra, viscosities, calorific values, and elemental analyses have been det...
