Updated on 2024/06/15

写真a

 
KIM, Moojoong
 
Affiliation
Faculty of Science and Engineering, Waseda Research Institute for Science and Engineering
Job title
Junior Researcher(Assistant Professor)
Degree
Ph.D.

Research Experience

  • 2022.05
    -
    Now

    早稲田大学 持続的環境エネルギー社会共創研究機構   環境エネルギーシステム総合研究所   所員

  • 2020.10
    -
    Now

    早稲田大学 理工学術院総合研究所   次席研究員・研究員講師

  • 2020.04
    -
    2020.09

    早稲田大学 理工学術院総合研究所   非常勤研究員

  • 2018.03
    -
    2020.02

    AJOU大学工学研究所   専任研究員

Education Background

  • 2012.09
    -
    2018.02

    <大学院(博士)>AJOU大学   機械工学部   機械工学科  

  • 2010.09
    -
    2012.08

    <大学院(修士)>AJOU大学   機械工学部   機械工学科  

  • 2006.03
    -
    2010.08

    <大学>AJOU大学   機械工学部   機械工学科  

    韓国,水原

Professional Memberships

  •  
     
     

    一般社団法人日本機械学会(JSME)

  •  
     
     

    社団法人大韓設備工学会(SAREK)

  •  
     
     

    社団法人大韓機械学会(KSME)

Research Areas

  • Fluid engineering   two-phase flow, multi-phase flow, refrigerant, real-time measurement, CFD / Thermal engineering   heat pump, liquid desiccant, digital-twin, refrigerant, real-time measurement

Research Interests

  • Liquid desiccant system

  • Heat Pump

  • Photothermal effect

  • Thermal properties

  • Two-phase flow

  • Low GWP refrigerant

  • Fluid dynamics

  • Thermodynamics

▼display all

Awards

  • Best Paper Award

    2018.04   KSME   The experimental study for image reconstruction method of photothermal imaging

    Winner: Moojoong Kim, Jinseop Lee, Jaisuk Yoo, Dong-Kwon Kim, Hyunjung Kim

  • Best Presenter Award

    2015.06   A Theoretical Study on the Performance of Humidification Element

    Winner: Tae Wi Kim, Moojoong Kim, Gwan Taek Kim, Dae Yeon Kim, Baek Youn, Dong-Kwon Kim, Yong Woon Han

 

Papers

  • Experimental investigation of the void fractions of refrigerants R32 and R1234yf in a 1 mm diameter horizontal channel using a capacitance-based method

    Moojoong Kim, Yuya Uemura, Tetsuya Sato, Kiyoshi Saito

    Applied Thermal Engineering   238   122113 - 122113  2024.02  [Refereed]

    Authorship:Lead author

    DOI

    Scopus

  • Experimental investigation of void fraction of R32 refrigerant in horizontal flow configuration using capacitance-based and quick-closing valve-based methods

    Moojoong KIM, Jongsoo JEONG, Tetsuya SATO, Kiyoshi SAITO

    Applied Thermal Engineering   229   120497 - 120497  2023.07  [Refereed]

    Authorship:Lead author

    DOI

    Scopus

    2
    Citation
    (Scopus)
  • Measurement of the relative permittivity of the liquid phase of R454C with vapor quality change under two-phase condition

    Moojoong Kim, Tetsuya Sato, Kiyoshi Saito

    International Communications in Heat and Mass Transfer   146   106908 - 106908  2023.07  [Refereed]

    Authorship:Lead author

    DOI

    Scopus

    2
    Citation
    (Scopus)
  • Experimental Investigation of Two-Phase Flow Distribution with Different Vertical Header Configurations

    Moojoong Kim, Mark Anthony Redo, Jongsoo Jeong, Kiyoshi Saito, Sangmu Lee, Hyunyoung Kim

    Energies   15 ( 21 ) 8320 - 8320  2022.11  [Refereed]

    Authorship:Lead author

     View Summary

    In this study, we investigated the behavior of two-phase flow distribution inside a vertical header of a microchannel heat exchanger (MCHX) that functions as an evaporator of a heat pump system. In general, the two-phase flow distribution behavior of the refrigerant differs depending on the target application, which ranges from small-scale automobile air-conditioners to large-scale building heat pump systems. Particularly, it is reported that the distribution characteristics in the vertical header of the MCHX vary extensively according to the inlet flow conditions of the refrigerant and the physical profile of the header. In this study, the physical configurations (header height, branch tube diameter) of four types of vertical headers were considered. Thereafter, the operating conditions in an experimental device that simulates an MCHX with a vertical header were selected. The experiment was performed under R410A as the working fluid, with a saturation temperature of 15 °C, inlet mass flow rate of 50–150 kg h−1 (mass flux of 908–2723 kg m−2 s−1), and an inlet vapor quality of 0.1–0.2. The liquid and vapor flow ratios and the relative standard deviation were adopted as metrics to characterize the uniformity of flow distribution. The distribution characteristics were subsequently described according to Reynolds and Froude numbers. The larger the Reynolds number and the smaller the Froude number, the more uniform the two-phase flow distribution becomes. A correlation was proposed as a function of the Reynolds and Froude numbers to predict the flow distribution characteristics for the considered vertical headers.

    DOI

    Scopus

  • Optimizing Calibration for a Capacitance-Based Void Fraction Sensor with Asymmetric Electrodes under Horizontal Flow in a Smoothed Circular Macro-Tube

    Moojoong Kim, Kanta Komeda, Jongsoo Jeong, Mizuki Oinuma, Tetsuya Sato, Kiyoshi Saito

    SENSORS   22 ( 9 )  2022.05  [Refereed]

    Authorship:Lead author

     View Summary

    In this study, a technique that uses a capacitance sensor with an asymmetric electrode to measure the void fraction of a refrigerant was developed. It is known that the void fraction and flow pattern affect the measured capacitance. Therefore, the relationship between the void fraction and capacitance is not linear; hence, a calibration method for obtaining accurate measurements is necessary. A calibration method was designed in this study based on repeated capacitance measurements and the bimodal temporal distribution to calibrate the atypical and repetitive flow patterns of slug flow and its transition to the intermittent flow regime. The calibration method also considers the weighted-average relation for the gradual transition of the intermittent to annular flow pattern according to the change from low to high quality. The proposed method was experimentally analyzed under the conditions of R32 refrigerant, a tube inner diameter of 7.1 mm, saturation temperature of 25 degrees C, mass flux of 100-400 kg m(-2) s(-1), and vapor quality of 0.025-0.900, and it was validated using a quick-closing valve (QCV) system under identical conditions. A relative error of 2.99% was obtained for the entire system, indicating good agreement between the proposed and QCV-based methods.

    DOI PubMed

    Scopus

    5
    Citation
    (Scopus)
  • Variational formulation of non-equilibrium void fraction

    Niccolo Giannetti, Moojoong Kim, Hiroaki Yoshimura, Kiyoshi Saito

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER   183  2022.02  [Refereed]

     View Summary

    A general variational formulation of the dissipative two-phase flows based on the extremization of the entropy production is developed. The entropy generation rate is written outside phase equilibrium by introducing interfacial contributions due to surface tension as well as heat and mass transfer between the two phases. Prigogine's theorem of minimum entropy production is used to estimate the steady state void fraction of the two-phase flow. The corresponding flow representation is investigated out of phase equilibrium for an annular flow, experiencing friction, surface tension effects, and interphase heat and mass transfer, within a diabatic channel. It is demonstrated that the present formulation generalises previous theories by capturing the effect of mass and heat fluxes variations, and that the widely accepted expression from Zivi represents a particular case obtained under certain simplifying assumptions. Finally, a first validation of the developed formulation of two-phase void fraction is presented for different flow conditions, heat flux from the external environment, and thermophysical properties of the refrigerant with reference to data obtained from a dedicated experimental apparatus adopting a capacitance sensor and from previous literature. (c) 2021 Elsevier Ltd. All rights reserved.

    DOI

    Scopus

    2
    Citation
    (Scopus)
  • Feasibility of Novel Rear-Side Mirage Deflection Method for Thermal Conductivity Measurements

    Moojoong Kim, Gwantaek Kim, Hyunjung Kim

    SENSORS   21 ( 17 )  2021.09  [Refereed]

    Authorship:Lead author

     View Summary

    Among the noncontact measurement technologies used to acquire thermal property information, those that use the photothermal effect are attracting attention. However, it is difficult to perform measurements for new materials with different optical and thermal properties, owing to limitations of existing thermal conductivity measurement methods using the photothermal effect. To address this problem, this study aimed to develop a rear-side mirage deflection method capable of measuring thermal conductivity regardless of the material characteristics based on the photothermal effect. A thin copper film (of 20 mu m thickness) was formed on the surfaces of the target materials so that measurements could not be affected by the characteristics of the target materials. In addition, phase delay signals were acquired from the rear sides of the target materials to exclude the influence of the pump beam, which is a problem in existing thermal conductivity measurement methods that use the photothermal effect. To verify the feasibility of the proposed measurement technique, thermal conductivity was measured for copper, aluminum, and stainless steel samples with a 250 mu m thickness. The results were compared with literature values and showed good agreement with relative errors equal to or less than 0.2%.

    DOI PubMed

    Scopus

  • An Experimental Study on the Reduction of Air Purifier Capacity due to Deposition of Dust and Oil Mist

    Moojoong Kim, Gwantaek Kim, Jaisuk Yoo, Hyunjung Kim, Baek Youn

    Korean Journal of Air-Conditioning and Refrigeration Engineering    2019.08  [Refereed]

    Authorship:Lead author

    DOI

  • Numerical Study on Effective Conditions for the Induction of Apoptotic Temperatures for Various Tumor Aspect Ratios Using a Single Continuous-Wave Laser in Photothermal Therapy Using Gold Nanorods

    Moojoong Kim, Gwantaek Kim, Donghyuk Kim, Jaisuk Yoo, Dong-Kwon Kim, Hyunjung Kim

    CANCERS   11 ( 6 )  2019.06  [Refereed]

    Authorship:Lead author

     View Summary

    Photothermal therapy can serve as an alternative to classic surgery in the treatment of patients with cancer. However, using photothermal therapy can result in local overheating and damage to normal tissues. Therefore, it is important to determine effective heating conditions based on heat transfer. In this study, we analyzed laser-tissue interactions in gold nanoparticle (GNP)-enhanced photothermal therapy based on the theory of heat transfer. The thermal behavior inside tissues during photothermal therapy was analyzed using numerical analysis. The apoptosis ratio was defined by deriving the area having a temperature distribution between 43 degrees C and 50 degrees C, which is required for inducing apoptosis. Thermal damage, caused by local heating, was defined using the thermal hazard value. Using this approach, we confirmed that apoptosis can be predicted with respect to tumor size (aspect ratio) and heating conditions (laser intensity and radius) in photothermal therapy with a continuous-wave laser. Finally, we determined the effective apoptosis ratio and thermal hazard value of normal tissue according to tumor size and heating conditions, thereby establishing conditions for inducing maximal levels of cell apoptosis with minimal damage to normal tissue. The optimization conditions proposed in this study can be a gentle and effective treatment option for photothermal therapy.

    DOI

  • Measurement of Contrast and Spatial Resolution for the Photothermal Imaging Method

    Moojoong Kim, Jaisuk Yoo, Dong-Kwon Kim, Hyunjung Kim

    APPLIED SCIENCES   9 ( 10 )  2019.05  [Refereed]

    Authorship:Lead author

     View Summary

    Analyzing the quality of images generated from an imaging method is essential for determining the limits and applicability of that method. This study analyzed the quality of images resulting from a photothermal imaging method by applying the line spread function and the modulation transfer function to the spatial resolution and contrast, on the basis of certain parameters of the photothermal imaging method for a copper-resin double-layered structure. The parameters are the ratio of the first-layer thickness to the thermal diffusion length ( and the ratio of the pump-beam radius to the thermal diffusion length ( ). The phase delay profile (edge response function, ERF) of the subsurface structure derived from the photothermal imaging method becomes dimensionless upon division by the thermal diffusion length; as the ratio increases, the spatial resolution and contrast increase.

    DOI

  • Development on the reconstruction of photothermal imaging method for subsurface structure

    Moojoong Kim, Jaisuk Yoo, Dong-Kwon Kim, Hyunjung Kim

    JOURNAL OF VISUALIZATION   22 ( 2 ) 329 - 339  2019.04  [Refereed]

    Authorship:Lead author

     View Summary

    The photothermal imaging technique is a nondestructive inspection technique that visualizes the inside of a metal by utilizing the photothermal effect. Although the concept of photothermal imaging techniques has been proposed, systematic research on the characteristics thereof has not been conducted. This study attempts to enhance the measurement and reconstruction process for a photothermal imaging method. To detect the edge of a subsurface pattern more accurate, low-pass FFT (fast Fourier transform) filter for noise reduction of measured data, and derivative detectors are adopted for the reconstruction of photothermal imaging. The adopted methods are applied to and visualize 20mmx25mmx1.5mm copper block including radius 5mm, height 1mm cylindrical resin as a subsurface pattern. The results show that the developed method can detect the edge of the resin subsurface 50% more accurately than the previous reconstruction method for photothermal imaging.

    DOI

  • Collinear Deflection Method for the Measurement of Thermal Conductivity of Transparent Single Layer Anisotropic Material

    Moojoong Kim, Kuentae Park, Gwantaek Kim, Jaisuk Yoo, Dong-Kwon Kim, Hyunjung Kim

    APPLIED SCIENCES   9 ( 8 )  2019.04  [Refereed]

    Authorship:Lead author

     View Summary

    Transparent anisotropic materials have garnered attention along with the growth of the semiconductor and display industries. Transparent anisotropic materials have the characteristic of varying electrical, optical, and thermal properties based on their crystal orientation, and many studies are being conducted on this topic. In order to utilize transparent anisotropic materials properly, thermal properties such as thermal conductivity are essentially required. However, due to the limitations of the existing thermal property measurement methods for transparent anisotropic materials, it is difficult to provide the thermal properties of transparent anisotropic materials. To address this problem, a transparent anisotropic collinear method capable of measuring the effective thermal conductivity of a transparent anisotropic material according to its crystal orientation is proposed in this paper. To this end, the internal temperature distribution of a transparent anisotropic material and the phase delay of the probe beam were theoretically derived through a numerical analysis model that uses a three-dimensional heat conduction equation. This model was applied to anisotropic thermal conductivity with orthorhombic structure. To verify the proposed method of measuring the thermal conductivity of a transparent anisotropic material, the thermal properties of 3 mm-thick A-plane sapphire glass were measured and compared with those of the existing literature. It was confirmed that the absolute errors were less than about 4 W/mk.

    DOI

  • Experimental study on the influence of surface roughness for photothermal imaging with various measurement conditions

    Moojoong Kim, Gwantaek Kim, Jaisuk Yoo, Dong-Kwon Kim, Hyunjung Kim

    THERMOCHIMICA ACTA   661   7 - 17  2018.03  [Refereed]

    Authorship:Lead author

     View Summary

    Imaging techniques for internal visualization of materials have become increasingly important in a wide range of industrial fields. Imaging techniques such as magnetic resonance imaging (MRI) and computed tomography (CT) employing X-rays have existed for quite some time. However, such classic techniques have physical limitations (for e.g., X-rays cannot penetrate high-density materials such as metals) because they were developed as medical applications. Therefore, alternative techniques for industrial fields should be explored. Photothermal imaging was explored from the perspective of visualization of the interior of metals as photothermal effects depend on the thermal properties of the materials. To establish photothermal imaging as a reliable technique, it is important to analyze the physical limitations and noise in the measurement. Therefore, in this study, the conditions leading to a minimum level of noise were explored using aluminum 6061 specimens of five surface roughness values under conditions of different pump beam frequencies and radii. In this work, surface roughness and pump beam frequency and radius were considered important parameters affecting photothermal imaging. Finally, comprehensive criteria to reduce signal noise in photothermal imaging were proposed.

    DOI

  • Numerical study on visualization method for material distribution using photothermal effect

    Moojoong Kim, Jaisuk Yoo, Dong-Kwon Kim, Hyunjung Kim

    JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY   29 ( 10 ) 4499 - 4507  2015.10  [Refereed]

    Authorship:Lead author

     View Summary

    Visualization and imaging techniques have become increasingly essential in a wide range of industrial fields. A few imaging methods such as X-ray imaging, computed tomography and magnetic resonance imaging have been developed for medical applications to materials that are basically transparent or X-ray penetrable; however, reliable techniques for optically opaque materials such as semiconductors or metallic circuits have not been suggested yet. The photothermal method has been developed mainly for the measurement of thermal properties using characteristics that exhibit photothermal effects depending on the thermal properties of the materials. This study attempts to numerically investigate the feasibility of using photothermal effects to visualize or measure the material distribution of opaque substances. For this purpose, we conducted numerical analyses of various intaglio patterns with approximate sizes of 1.2-6 mm in stainless steel 0.5 mm below copper. In addition, images of the intaglio patterns in stainless steel were reconstructed by two-dimensional numerical scanning. A quantitative comparison of the reconstructed results and the original geometries showed an average difference of 0.172 mm and demonstrated the possibility of application to experimental imaging.

    DOI

  • Analytical study of the thermal and optical properties effect on the collinear deflection method

    Kuen Tea Park, Moon G. Lee, Dae Sik Jeong, Dong Kwon Kim, Moo Joong Kim, Jai Suk Yoo, Hyun Jung Kim

    Advanced Materials Research   811   353 - 357  2013  [Refereed]

     View Summary

    Recently, study of transparent materials, such as thin film form, have an important field for the development of advanced electronic devices. Therefore, the need for the precision thermal property measurement techniques of transparent thin film materials becomes increasing according to the development of these material. The ideal methods for optically measurements of these properties are noncontact method. However, optically measurements are often difficult due to the transparency. So, transparent materials have not enough temperature gradient in the air layer above thin films. To solve this problem, we used the collinear deflection method which is one of the photothermal deflection methods. In the measurement process, both of the pump beam and probe beam are irradiated vertically on the transparent sample. And the probe beam is deflected by refractive index variation of samples due to the temperature gradient inside samples. The purpose of this study is to analyze the effect of thermal and optical properties analytically on the collinear deflection method for variable materials. © (2013) Trans Tech Publications, Switzerland.

    DOI

▼display all

Presentations

  • Cutting-edge research in refrigeration and air conditioning leading the way to a carbon-neutral future

    Moojoong KIM

    Seminar in Mechanical Engineering, Ajou University, Korea 

    Presentation date: 2023.09

  • The development of drift-flux model considering flow patterns in smooth and macro tubes for void fraction prediction

    KIM Moojoong, Uemura Yuya, JEONG Jongsoo, Saito Kiyoshi

    日本冷凍空調学会年次大会講演論文集(CD-ROM) 

    Presentation date: 2023.09

    Event date:
    2023.09
     
     
  • The applicability study of metal foam structured air-solution contactor for the liquid desiccant system using ionic liquid

    KIM Moojoong, LEE Myoungwoo, JEONG Jongsoo, Saito Kiyoshi

    日本冷凍空調学会年次大会講演論文集(CD-ROM) 

    Presentation date: 2023.09

    Event date:
    2023.09
     
     
  • Void fraction measurement of R454C refrigerant using capacitance sensors

    Moojoong Kim, Yuya UEMURA, Jongsoo Jeong, Kiyoshi Saito

    26th International Congress of Refrigeration 

    Presentation date: 2023.08

    Event date:
    2023.08
     
     
  • Void fraction measurement of R454C refrigerant in smooth circular tube

    KIM Moojoong, Uemura Yuya, JEONG Jongsoo, Saito Kiyoshi

    日本冷凍空調学会年次大会講演論文集(CD-ROM) 

    Presentation date: 2022.09

    Event date:
    2022.09
     
     
  • A study on the investigation of void fraction correlation for predicting the refrigerant charge amount of a low GWP refrigerant

    KIM Moojoong, Uemura Yuya, JEONG Jongsoo, Saito Kiyoshi

    日本機械学会環境工学総合シンポジウム(CD-ROM) 

    Presentation date: 2022.07

    Event date:
    2022.07
     
     
  • A numerical study of the thermal dosage distribution under NIR laser conditions for photothermal therapy

    Moojoong Kim, Gwantaek Kim, Donghyuk Kim, Heejin Kim, Jaisuk Yoo, Dong-Kwon Kim, Hyun Jung Kim

    2018 Annual Congress of the Korean Society of Mechanical Engineers 

    Presentation date: 2018.12

    Event date:
    2018.12
     
     
  • The experimental study for image reconstruction method of photothermal imaging

    Moojoong Kim, Jinseop Lee, Jaisuk Yoo, Dong-Kwon Kim, Hyunjung Kim

    2017 Spring Congress of the Thermal Engineering Section of the Korean Society of Mechanical Engineers 

    Presentation date: 2017.05

    Event date:
    2017.05
     
     
  • The study for imaging method using photothermal effect for the stainless steel pattern in copper

    Moojoong Kim, Hyunjung Kim, Dong Kwon Kim, Jaisuk Yoo

    ACRA 2014 - Proceedings of the 7th Asian Conference on Refrigeration and Air Conditioning 

    Presentation date: 2014.05

    Event date:
    2014.05
     
     

     View Summary

    Recently, as the concern for new visualization techniques increase. The related researches have been carried out such as photoacoustic technique, photothermal technique and photoelectronic technique. Photothermal technique is one of the three-dimensional imaging technique candidates. The photothermal effect has different result depending on the thermal property of materials. That characteristic was widely used for thermal property measurement. To prove the feasibility for technique using phtothermal effect, this study was numerically carried out to visualize an invisible shape inside the materials. The numerical investigation showed that the intaglio stainless-steel pattern can be imaged. The pattern which is approximately 5000 μm size of square shaped existed in 500 μm depth of copper was visualized.

  • Experimental Study on Evaporative Heat Sink

    Moo Joong Kim, Sangjin Kim, Kuen Tae Park, Hyun Jung Kim, Dong-Kwon Kim

    ASME 2013 International Mechanical Engineering Congress and Exposition  American Society of Mechanical Engineers

    Presentation date: 2013.11

    Event date:
    2013.11
     
     

     View Summary

    The heat sinks are used to dissipate heat from electronic and industrial systems. In the present study, in order to overcome limitation of traditional heat sink, we suggest and experimentally investigate new concept of heat sink which use evaporation of water. The heat sink is made from sintered copper plate and absorbs supplied water like sponges by capillarity-driven wetting. The absorbed water evaporates at the surface of heat sink and the surface temperature is dropped due to the latent heat of water evaporation. In this study, we experimentally compare the heat dissipation performance of the suggested heat sink with traditional heat sink. And we investigate the performance of heat sink made from the sintered copper plate with various particle radius and porosities. Finally, we find the fin spacing, at which the thermal performance is maximized.

  • The study for detecting method of the inside patterning using photothermal Effect

    Moojoong Kim, Kuen Tea Park, Hyunjung Kim, Dong-Kwon Kim, Jaisuk Yoo

    2013 Spring Congress of the Thermal Engineering Section of the Korean Society of Mechanical Engineers 

    Presentation date: 2013.05

    Event date:
    2013.05
     
     
  • Theoretical study of photothermal effect for photothermal imaging method

    Moojoong Kim, Kuen Tae Park, HyunJung Kim, Dong-Kwon Kim, Jaisuk Yoo

    8th KSME-JSME Thermal and Fluids Engineering Conference 

    Presentation date: 2012.05

    Event date:
    2012.05
     
     

▼display all

Research Projects

  • Development of high-precision and safe measurement method based on the photothermal effect for thermal diffusivity of low GWP refrigerant

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research

    Project Year :

    2023.04
    -
    2026.03
     

  • 一体型分配器の流動可視化と構造最適化によるRobust分流技術の開発 II

    株式会社サムスン日本研究所 

  • 一体型分配器の流動可視化と構造最適化によるRobust分流技術の開発 I

    株式会社サムスン日本研究所 

  • 先導研究プログラム/エネルギー・環境新技術先導研究プログラム

    国立研究開発法人 新エネルギ-・産業技術総合開発機構(NEDO) 

  • 水素社会の構築で必要になる革新的冷熱活用技術に関する調査

    国立研究開発法人 新エネルギ-・産業技術総合開発機構(NEDO) 

  • 未利用熱エネルギーの革新的活用技術研究開発

    国立研究開発法人 新エネルギ-・産業技術総合開発機構(NEDO) 

  • 省エネ化・低温室効果を達成できる次世代冷凍空調技術の最適化及び評価手法の開発/次世代冷媒の基本特性に関するデータ取得及び評価

    国立研究開発法人 新エネルギ-・産業技術総合開発機構(NEDO) 

▼display all

Misc

  • The applicability study of metal foam structured air-solution contactor for the liquid desiccant system using ionic liquid

    KIM Moojoong, LEE Myoungwoo, JEONG Jongsoo, Saito Kiyoshi

    日本冷凍空調学会年次大会講演論文集(CD-ROM)   2023  2023.09  [Refereed]

    Authorship:Lead author

    Research paper, summary (national, other academic conference)  

    J-GLOBAL

  • The development of drift-flux model considering flow patterns in smooth and macro tubes for void fraction prediction

    KIM Moojoong, Uemura Yuya, JEONG Jongsoo, Saito Kiyoshi

    日本冷凍空調学会年次大会講演論文集(CD-ROM)   2023  2023.09

    Authorship:Lead author

    Research paper, summary (national, other academic conference)  

    J-GLOBAL

  • Void fraction measurement of R454C refrigerant using capacitance sensors

    Moojoong Kim, Yuya UEMURA, Jongsoo Jeong, Kiyoshi Saito

    26th International Congress of Refrigeration    2023.08  [Refereed]

    Authorship:Lead author

    Article, review, commentary, editorial, etc. (international conference proceedings)  

  • Void fraction measurement of R454C refrigerant in smooth circular tube

    KIM Moojoong, Uemura Yuya, JEONG Jongsoo, Saito Kiyoshi

    日本冷凍空調学会年次大会講演論文集(CD-ROM)   2022  2022.09  [Refereed]

    Authorship:Lead author

    Research paper, summary (national, other academic conference)  

    J-GLOBAL

  • A study on the investigation of void fraction correlation for predicting the refrigerant charge amount of a low GWP refrigerant

    KIM Moojoong, Uemura Yuya, JEONG Jongsoo, Saito Kiyoshi

    日本機械学会環境工学総合シンポジウム(CD-ROM)   32nd  2022.07  [Refereed]

    Research paper, summary (national, other academic conference)  

    J-GLOBAL

  • R32 in Macro Tube Void Fraction Measurement with QCV and Capacitance Method

    Komeda Kanta, KIM MooJoong, JEONG Jongsoo, Saito Kiyoshi

    日本冷凍空調学会年次大会講演論文集(CD-ROM)   2021  2021.09  [Refereed]

    Research paper, summary (national, other academic conference)  

    J-GLOBAL

  • Non-Equilibrium Formulation of Void Fraction in Two-Phase Flows

    Niccolo Giannetti, Moojoong Kim, Hiroaki Yoshimura, Kiyoshi Saito

    6TH IIR CONFERENCE ON THERMOPHYSICAL PROPERTIES AND TRANSFER PROCESSES OF REFRIGERANTS (TPTPR2021)     127 - 134  2021.09  [Refereed]

     View Summary

    A general variational formulation of the void fraction in dissipative two-phase flows is developed. In particular, the steady-state void fraction is extracted by the extremization of the entropy generation rate, based on a comprehensive non-equilibrium expression that introduces interfacial contributions due to surface tension between different phases and fluxes due to heat and mass transfer.Such formulation opens up to the possibility of obtaining different theoretical formulas by the direct application of Prigogine's theorom of minimum entropy production and it is investigated in terms of different assumptions for showing the effect of different flow conditions, flow pattern interfacial geometry, entrainment ratio, heat flux from the external environment, and thermophysical properties of the refrigerant. Consequently, the widely-accepted Zivi's expression of void fraction is obtained as a particular case of this general formulation.

    DOI

  • Experimental Study on the Measurement of Thermal Conductivity of Opaque Metallic Double Layer Structure Using Reverse Photothermal Deflection Method

    Gwantaek Kim, Moojoong Kim, Hyunjung Kim, Dong-Kwon Kim, Baek Youn

    2019 Spring Congress of the Thermal Engineering Section of the Korean Society of Mechanical Engineers    2019.05

    Research paper, summary (national, other academic conference)  

  • Numerical study on the changes of apoptosis ratio for various volume fraction of GNPs in tumor during photothermal therapy

    Donghyuk Kim, Moojoong Kim, Gwantaek Kim, Jaisuk Yoo, Dong-Kwon Kim, Hyun Jung Kim

    2019 Spring Congress of the Thermal Engineering Section of the Korean Society of Mechanical Engineers    2019.05

    Research paper, summary (national, other academic conference)  

  • A numerical study of the thermal dosage distribution under NIR laser conditions for photothermal therapy

    Moojoong Kim, Gwantaek Kim, Donghyuk Kim, Heejin Kim, Jaisuk Yoo, Dong-Kwon Kim, Hyun Jung Kim

    2018 Annual Congress of the Korean Society of Mechanical Engineers    2018.12  [Refereed]

    Authorship:Lead author

    Research paper, summary (national, other academic conference)  

  • Numerical model validation of reverse photothermal deflection method using double layer structure

    Gwantaek Kim, Moojoong Kim, Heejin Kim, Hyunjung Kim, Jaisuk Yoo

    2017 Annual Congress of the Korean Society of Mechanical Engineers    2017.11  [Refereed]

    Research paper, summary (national, other academic conference)  

  • Numerical Study on Thickness Measurement for Metal-Resin Double Layer Using Photothermal Deflection Method

    Heejin Kim, Moojoong Kim, Gwantaek Kim, Jaisuk Yoo, Dong-Kwon Kim, Hyun Jung Kim

    2017 Annual Congress of the Korean Society of Mechanical Engineers    2017.11  [Refereed]

    Research paper, summary (national, other academic conference)  

  • The experimental study for image reconstruction method of photothermal imaging

    Moojoong Kim, Jinseop Lee, Jaisuk Yoo, Dong-Kwon Kim, Hyunjung Kim

    2017 Spring Congress of the Thermal Engineering Section of the Korean Society of Mechanical Engineers    2017.05

    Authorship:Lead author

    Research paper, summary (national, other academic conference)  

  • Experimental study of the performance variation of HEPA filters according to the diameter of accumulated particle

    Gwan Taek Kim, Jong Beom Lee, Moojoong Kim, Baek Youn, Byung Han Lim, Euy Sung Chu, Kwon Jin Kim

    2016 Annual Congress of the Korean Society of Mechanical Engineers    2016.12  [Refereed]

    Research paper, summary (national, other academic conference)  

  • A experimental study of the performance change of HEPA filter in accumulating incense smoke particle

    Jong Beom Lee, Moojoong Kim, Gwan Taek Kim, Byung Han Kim, Euy Sung Chu, Kwon Jin Kim, Baek Youn

    2016 Spring Congress of the Thermal Engineering Section of the Korean Society of Mechanical Engineers    2016.06

    Research paper, summary (national, other academic conference)  

  • The Effect of Pump-beam Frequency for Photothermal Deflection Signal

    Jin Seop Lee, Moojoong Kim, Dong-Kwon Kim, Baek Youn, Jaisuk Yoo and Hyunjung Kim

    2016 Spring Congress of the Thermal Engineering Section of the Korean Society of Mechanical Engineers    2016.04

    Research paper, summary (national, other academic conference)  

  • A Theoretical Study on the Performance of Humidification Element

    Tae Wi Kim, Moojoong Kim, Gwan Taek Kim, Dae Yeon Kim, Baek Youn, Dong-Kwon Kim, Yong Woon Han

    2015 Summer Annual Conference of The Society of Air-conditioning and Refrigerating Engineers of Korea    2015.06  [Refereed]

    Research paper, summary (national, other academic conference)  

  • A Experimental Study on the Performance Decrease as the accumulated dust and oil mist.

    Dae Yeon Kim, Moojoong Kim, Gwan Taek Kim, Tae Wi Kim, Jun-Hyoun Kwon, Jungho Kim, Jae Young Choi, Baek Youn

    2015 Summer Annual Conference of The Society of Air-conditioning and Refrigerating Engineers of Korea    2015.06  [Refereed]

    Research paper, summary (national, other academic conference)  

  • The study for imaging method using photothermal effect for the stainless steel pattern in copper

    Moojoong Kim, Hyunjung Kim, Dong Kwon Kim, Jaisuk Yoo

    ACRA 2014 - Proceedings of the 7th Asian Conference on Refrigeration and Air Conditioning    2014.05  [Refereed]

    Authorship:Lead author

    Research paper, summary (international conference)  

     View Summary

    Recently, as the concern for new visualization techniques increase. The related researches have been carried out such as photoacoustic technique, photothermal technique and photoelectronic technique. Photothermal technique is one of the three-dimensional imaging technique candidates. The photothermal effect has different result depending on the thermal property of materials. That characteristic was widely used for thermal property measurement. To prove the feasibility for technique using phtothermal effect, this study was numerically carried out to visualize an invisible shape inside the materials. The numerical investigation showed that the intaglio stainless-steel pattern can be imaged. The pattern which is approximately 5000 μm size of square shaped existed in 500 μm depth of copper was visualized.

  • Experimental Study on Evaporative Heat Sink

    Moo Joong Kim, Sangjin Kim, Kuen Tae Park, Hyun Jung Kim, Dong-Kwon Kim

    ASME 2013 International Mechanical Engineering Congress and Exposition    2013.11  [Refereed]

    Authorship:Lead author

    Research paper, summary (international conference)  

     View Summary

    The heat sinks are used to dissipate heat from electronic and industrial systems. In the present study, in order to overcome limitation of traditional heat sink, we suggest and experimentally investigate new concept of heat sink which use evaporation of water. The heat sink is made from sintered copper plate and absorbs supplied water like sponges by capillarity-driven wetting. The absorbed water evaporates at the surface of heat sink and the surface temperature is dropped due to the latent heat of water evaporation. In this study, we experimentally compare the heat dissipation performance of the suggested heat sink with traditional heat sink. And we investigate the performance of heat sink made from the sintered copper plate with various particle radius and porosities. Finally, we find the fin spacing, at which the thermal performance is maximized.

    DOI

  • Experimental Study on Energy Harvesting From Salinity Gradient by Reverse Electrodialysis in Ag/AgCl Deposited AAO Nanochannel Array

    Byeongdong Kang, Moojoong Kim, Hyungmin Joo, Hyun Jung Kim, Dong-Kwon Kim

    ASME 2013 International Mechanical Engineering Congress and Exposition    2013.11  [Refereed]

    Research paper, summary (international conference)  

     View Summary

    Reverse electrodialysis (RED) is energy conversion phenomena which generates electricity from concentration gradient energy by mixing the ions in sea water with fresh water through ion-selective nanochannel. When nanochannels are filled with an aqueous solution, the surface of nanochannels is charged by ionization, ion adsorption, and ion dissolution. Therefore, co-ions are repelled from the nanochannels and only counter-ions can be transported through the nanochannels. As a result, the electric current can be generated by selective ion transport through the nanochannels from sea water to fresh water. Recently, solid-state nanochannels or nanopores have received attention because they have potential to replace polymer ion-selective membranes. Especially, anodic aluminum oxide (AAO) nanochannel array has advantage of easiness of pore size control and high pore density. In the present study, to collect electric current generated by the nanochannels, we deposited the porous silver layer on both front and rear surface of the AAO nanochannel array by using e-beam evaporation and changed the silver layer to the silver/silver chloride layer by chemical oxidation with aqueous FeCl3. Finally, we conduct an experimental investigation for the power generation from the AAO nanochannel arrays placed between two potassium chloride solutions with various combinations of concentrations.

    DOI

  • Effects of wick design on the power generation from vapor pressure difference

    Sang Jin Kim, Moojoong Kim, Hyunjung Kim, Jaisuk Yoo, Dong-Kwon Kim

    2013 Spring Congress of the Thermal Engineering Section of the Korean Society of Mechanical Engineers    2013.05

    Research paper, summary (national, other academic conference)  

  • The study for detecting method of the inside patterning using photothermal Effect

    Moojoong Kim, Kuen Tea Park, Hyunjung Kim, Dong-Kwon Kim, Jaisuk Yoo

    2013 Spring Congress of the Thermal Engineering Section of the Korean Society of Mechanical Engineers    2013.05

    Authorship:Lead author

    Research paper, summary (national, other academic conference)  

  • Numerical Study on Effects of Electrolyte Flow on Power Generation by Reverse Electrodialysis in Ion-Selective Nanochannels

    Byeongdong Kang, Moojoong Kim, Dong-Kwon Kim, HyunJung Kim, Jaisuk Yoo

    8th KSME-JSME Thermal and Fluids Engineering Conference    2012.05  [Refereed]

    Research paper, summary (international conference)  

  • Theoretical study of photothermal effect for photothermal imaging method

    Moojoong Kim, Kuen Tae Park, HyunJung Kim, Dong-Kwon Kim, Jaisuk Yoo

    8th KSME-JSME Thermal and Fluids Engineering Conference    2012.05  [Refereed]

    Authorship:Lead author

    Research paper, summary (international conference)  

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Industrial Property Rights

  • AIR CONDITIONER AND CONTROLLING METHOD THEREOF

    特許KR102550798B1

    JunHyoun Kwon, JungHo Kim, SungLyul Myoung, Baek Youn, GwanTaek Kim, DaeYeon Kim, MooJoong Kim, TaeWi Kim

    Patent

  • Air Conditioner and Control Method Therefor

    特許US10773199B2

    JunHyoun Kwon, JungHo Kim, SungLyul Myoung, Baek Youn, GwanTaek Kim, DaeYeon Kim, MooJoong Kim, TaeWi Kim

    Patent

  • 空调及其控制方法

    权埈铉, 金仲镐, 明成烈, 尹柏, 金宽宅, 金大渊, 金武重, 金泰伟

    Patent

  • AIR CONDITIONER AND CONTROLLING METHOD THEREOF

    JunHyoun Kwon, JungHo Kim, SungLyul Myoung, Baek Youn, GwanTaek Kim, DaeYeon Kim, MooJoong Kim, TaeWi Kim

    Patent

  • AEROGENERATOR

    特許KR101171263B1

    Dongkwon Kim, Dongmoon Woo, ByeongDong Kang, MooJoong Kim, KuenTae Park

    Patent

 

Syllabus

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Teaching Experience

  • 工学系の解析設計演習

    早稲田大学  

    2023.04
    -
    Now
     

  • 伝熱工学

    早稲田大学  

    2023.04
    -
    Now
     

  • 科学計算プログラミング

    AJOU大学(韓国)  

    2015.09
    -
    2019.02
     

  • 工学制度及びグラフィック実習

    AJOU大学(韓国)  

    2015.09
    -
    2019.02
     

 

Sub-affiliation

  • Faculty of Science and Engineering   Graduate School of Fundamental Science and Engineering