LNG 냉열을 회수하기 위해 재킷 냉각수를 열원으로 하는 유기랭킨사이클의 열교환기 설계

임태우(Tae-Woo LIM),최용석(Yong-Seok CHOI) 한국수산해양교육학회 2020 水産海洋敎育硏究 Vol.32 No.4

In this study, the thermal design of the evaporator and condenser in the ORC system using the jacket cooling water as the high temperature heat source and the cooling heat of LNG as the low temperature heat source was carried out. R134a was used as the working fluid for the ORC system. In the case of the evaporator, Shahs correlation shows the lowest heat transfer coefficient among the two-phase flow heat transfer coefficients in tubes obtained from the literature. It was found that the contribution of nuclear boiling in the low quality region was dominant. Kandlikars correlation also showed the contribution of nuclear boiling. As the quality is increased, the contribution of convective evaporation was not significant. Lims correlation showed the highest heat transfer coefficient, and the contribution of nuclear boiling in the whole quality region was not as large as that of convective evaporation. Therefore, the total heat transfer surface area of the evaporator was the highest when obtained from Shahs correlation. Low value was obtained when obtained from the correlation of Lim. In the condenser, the shell-side heat transfer coefficient obtained from Nusselt analysis was the lowest, followed by Kern and Eissenberg. The heat transfer surface area of the condenser showed the highest when obtained from Nusselt analysis.

용융금속 이송용 전자기 펌프의 유동해석 및 실험

최재호(Jae Ho Choi),임효재(Hyo Jae Lim),김창업(Chang Eob Kim),권정태(Jung Tae Kwon) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5

This study aims at analyzing the flow characteristics of the electromagnetic pump using a linear induction motor (LIM) for transferring molten metals. The flow characteristics of the pump are simulated by magnetohydrodynamic(MHD) program. In this system, the LIM is used for transferring molten metal by electromagnetic force. The molten metal is treated as the secondary part of the LIM. Since the LIM produces an electromagnetic force in the duct, the molten metal can flow from the furnace to the reservoir. The flow characteristics of the pump are analyzed using MHD program for magnetic field of 0.1[T] in duct. In order to prove the analysis, we made a prototype electromagnetic pump using LIM.

The Study of Relationship Between Loneliness and Suicidal Ideation Among Elderly Living Alone: Focusing Moderating Effects of Perceived Social Support and Structural Social Support

Lim,Hyun-Sung,Yoon,Tae-Gyeong 한국통합사례관리학회 2021 한국케어매니지먼트연구 Vol.- No.38

This study s purpose was to examine the impact of loneliness, and two types of social support(functional and structural) on the suicidal ideation among elderly living alone. About 254 research participants were recruited from Seoul City and other cities in Gyeonggi-do and finished the questionnaires of loneliness, perceived social support, structural social support, and the suicidal ideation. Data were entered into multiple regression analyses. The finding of this research study indicates that loneliness was an important predictor for suicidal ideation. Thus, increased loneliness was associated with a high level of the suicidal ideation. This research study result showed a moderating effect of functional social support. However, structural social support did not moderate relationship between loneliness and suicidal ideation. This research study would provide implications for social work practices.

Electromyography 기법을 이용한 씨름 덧걸이 기술의 상체 근 동원 비교분석

신성휴,임영태,김태완,박기자,권문석 한국운동역학회 2003 한국운동역학회지 Vol.13 No.1

Shin, S-H · Lim, Y-T · Kim, T-H · Park, K-J and Kwon, M-S. Electromyographical Analysis of Muscle Activities of Upper Trunk for Ssireum Dutguri Technique. Korean Journal of Sport Biomechanics, Vol. 13, no. 1, pp. 95-108. The purposes of this study were to analyze the muscle activities and the characteristics of muscle recruiting patterns of upper trunk for Ssirum dutguri technique using three top-ranked elite Ssirum players. The EMG technique was used to record muscle activities of both right and left sides of latissimus dorsi, biceps brachii, and erector spinae. Six surface electrodes were placed on the surface of the selected muscles and one ground electrode was also attached on the back of neck(C7). One video camera was also used to record the Ssirum motion to define 4 events and 3 phases for further analysis. The raw EMG data were filtered with band pass filter (50-400 Hz) to remove artifacts and then low pass filtered (4 Hz) to find the linear envelope which resemble muscle tension curve. This filtered EMG data were normalized to MVIC for the purpose of comparion between the subjects. The results were indicated that each subject with different physical characteristics showed very different muscle activity patterns. Although Ssirum dutguri is considered as foot technique the player grasped opponent's satba(belt) with both hands when they play. Because of this reason, activities of upper trunk muscles were relatively high. However, direct comparison between upper and lower body muscles was not possible due to the lack of the data in present study. Interestingly, all threes subjects showed that erector spinae muscle activity was comparatively higher than those of latissimus dorsi and biceps brachii. This implies to reinforce back muscle as a routine of training to improve performance or to prevent back injury. implies to reinforce back muscle as a routine of training to improve performance or to prevent back injury.

In Vivo ^31P NMR Spectroscopy를 이용하여 젖산 운동시간과 유산소 운동시간에 따른 골격근 섬유의 고 에너지 인(P) 대사 변화

성기홍,임태환,이대근,문치웅,이정희,김상태,신명진,이덕분 대한스포츠의학회 1994 대한스포츠의학회지 Vol.12 No.1

Intracellular high energy phosphorus metabolism can be assessed noninvasively and dynamically by in vivo ^31P NMRS of skeletal muscle have shown various applications of this technique in evaluating the pathophysiology of diseased or normal muscles. High energy phosphate metavolsim in the human skeletal muscle was studies in the work. ^31P nuclear magnetic resonance spectroscopy allowed the evaluate of the lactic acid and aerobic energy system in the intracellular skeletal muscle by energy concentration of ^31P nuclear magnetic resonance spectroscopy allowed the evaluate of the lactic acid and aerobic energy system in the intracellular skeletal muscle by energy concentration of ^31P metabolite, (Pi), (PCr), (ATP). The ratio of Pi/PCr the spectra measured from normal volanteers and elite athleties indicated a signetifcant difference between the two group for each exercise protocal. It was generally ovserved that the all out time of normal volunteers in shorter that that of elite athletes, and the ration of Pi/PCr is samller for elite athlets than for normal volunteers.

웹툰에 드러난 남성 동성사회성(homosociality) 양상 : 박태준 작가의 작품을 중심으로

남미자(Nam, Mi-Ja),박성태(Park, Seong-Tae),임세원(Lim, Sewon) 한국교육사회학회 2022 교육사회학연구 Vol.32 No.1

이 연구는 박태준의 네이버 연재 웹툰 싸움독학 (2019.11.15~현재)과 한남동 케이하우스 (2018.12.6~2019.10.31.)에 나타난 남성 동성사회성이 어떻게 드러나는가를 분석하는 것이 목적이다. 최근 남성 청소년의 백래시와 반페미니즘 정서가 확산되고 있는 가운데, 남성 청소년에게 영향력 있는 웹툰 분석은 향후 남성 청소년을 이해하는 데 의미있는 자료가 될 것이다. 두 작품의 분석을 통해 확인한 남성동성사회성 양상은 다음과 같다. 첫째, 남성의 성장은 ‘아직’ 남자가 아닌 자들이 ‘진짜’ 남성들에게 인정받고, 둘째, 인기 있는 여성을 소유하여 성적 주체가 되며, 셋째, 이 과정에서 호모포비아와 여성혐오를 동반하는 것으로 의미화 된다. 이것이 남성의 성장이라고 인식할 때 청소년들은 지속적으로 자신을, 그리고 여성을 혐오할 수밖에 없게 된다. 이러한 분석을 토대로 본 연구는 젠더 교육과 연구의 지형의 변화와 확장을 제안한다. 여성 청소년뿐 아니라 남성 청소년 역시 하나의 젠더 범주로 묶일 수 없는 다층적이고 교차적이기 때문에, 젠더 연구와 교육에서 여성과 남성의 이분법적 시각을 벗어날 필요가 있다. The purpose of this study is to analyze how the male homosociality is revealed in the webtoons written by Park, Tae-joon. Amid the recent spread of backlash and anti-feminist sentiment among male adolescents, webtoon analysis that is influential to male adolescents will be meaningful data for understanding male adolescents in the future. The male homosocial aspects confirmed through the analysis of the two works are as follows. First, the growth of men is recognized by not yet men, and secondly, they become sexual subjects by owning popular women, and thirdly, it is meant to be accompanied by homophobia and misogyny in the process. When recognizing that this ismale growth, adolescents have no choice but to constantly hate themselves and women. Based on this analysis, this study proposes changes and expansion of the topography of gender education and research. Since not only female adolescents but also male adolescents are multi-layered and cross-sectional that cannot be grouped into one gender category, it is necessary to deviate from the dichotomy perspective of women and men in gender research and education.

철계 소결체의 피삭성에 관한 연구

임태환 선문대학교 1999 공과대학논문집 Vol.1 No.2

철계 소결체에 피삭성을 향상시키는 다양한 원소들을 Fe+0.7%C 소결체에 첨가하여 실험한 결과, 0.15%SiO_(2)+0.15%MgO을 Fe+0.7%C 소결체에 첨가하여 소결 한 후 증기처리 한 소결체가 가장 우수한 피삭성을 나타내었다. Various elements which can improve the machinability of sintered ferrous materials were added into the sintered Fe+0.7%C. From the results of the machinability test, it was found that the sintered part containing 0.15%SiO_(2)+0.15%MgO, which was sintered followed by a steam treatment, exhibited the superior machinability.

ISC모델을 이용한 폐기물 소각시설의 영향평가에 관한 연구

임익현,정태섭 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-

Effect of air pollution on environment must be predicted accurately in order that air pollution may be solved and effective management plans established. Recently, air pollution models are used to predict the effect of emission source on air pollution and manage air environment. And these are useful to assess the effect of air pollutant. In this paper, air pollution model(ISCST) was applied to identify the effects of incineration plant on air quality in around area. Emission rates of CO, NOx, SOx, HCl, dust, dioxin and operation condition of incineration plant were investigated for the purpose of the model simulation. And computational domain with a grid of 0.5㎞ × 0.5㎞ was 15㎞ × 15㎞. Meterological data for the last 5 years(’97.’01) were used as input data.

차체구조용 박육부재의 정적 압궤특성에 관한 실험적 연구

임성훈,김태식,양광영 조선대학교 동력자원연구소 1996 動力資源硏究所誌 Vol.18 No.1

In this paper, collapse test of thin-walled structural member widely used for automobiles is carried out under static compression load to observe the effects of cross-sectional shape and material on the absorbing-energy capacity in the viewpoint of crashworthiness. specimens tested consist of two sorts(Aluminium, CFRP) and configurations(Cylinder, Square) with variation in thickness. Also, comparisons of Al cylinder and square specimens are made th find the influence of difference in shape on the absorbing-energy capability according as the thickness of specimen varies.

非國際的 武力衝突에 있어서 國際人道法의 適用에 관한 小考

林台根 嶺南大學校附設 社會科學硏究所 1992 社會科學硏究 Vol.12 No.2