Low GWP 대체냉매 적용 냉동시스템의 안전성 평가 사례

임병한,김권진,서형준 대한설비공학회 2016 대한설비공학회 학술발표대회논문집 Vol.2016 No.11

프로판/이소부탄 혼합냉매를 적용한 가정용 냉장고의 성능에 관한 연구

임병한,박윤범,유환규,정동수,김종보,Lim, B.H.,Park, Y.B.,Yoo, H.K.,Jung, D.S.,Kim, C.B. 대한설비공학회 1995 설비공학 논문집 Vol.7 No.2

The performance of a refrigerant mixture of propane(R290)/isobutane(R600a) as a substitute for CFC12 was investigated in a domestic refrigerator with single evaporator. A thermodynamic cycle simulation indicated an increase in COP of a 1.7 to 2.4% with R-290/600a in the composition range of 0.2 to 0.6 mass fraction of R290 compared to CFC12. For the tests, two units($299{\ell}$, $465{\ell}$) were used. All refrigeration components remained the same throughout the tests, except that the length of capillary tube and amount of charge were changed for the mixture. The refrigerators were fully instrumented with more than 20 thermocouples, 2 pressure transducers, and watt/watt-hour meter for each refrigerator. 'Energy consumption test' and 'no load pulldown test' were performed under the same condition. The experimental results obtained with the same compressor indicated that R-290/600a mixture at 0.6 mass fraction of R290 showed a 3 to 5% increase in energy efficiency and a faster cooling speed compared to CFC12. The R-290/600a mixture showed a shorter compressor on-time and a lower compressor dome temperature than CFC12. In conclusion, the proposed hydrocarbon mixture seems to be an appropriate candidate to replace CFC12 without causing more environmental problems.

이소부탄을 적용한 가정용 냉장고의 성능 평가 ( Performance Evaluation of Isobutane ( R-600a ) as a substitute for R-12 in a Household refrigerator / freezer )

임병한,주의성,김만회,문정호,박윤서 대한기계학회 1996 대한기계학회 춘추학술대회 Vol.- No.-

근로시간 불평등 및 근로시간 결정요인 분석

임병인,이지민 한국재정학회 2024 재정학연구 Vol.17 No.2

본 연구에서는 1998년~2021년 한국노동패널조사 자료로써 근로시간의 불평등과 근로시간과 임금사이의 상관관계를 분석하여 이들이 소득불평등의 최근 변화에 어떠한영향을 미쳤는지를 살펴보고, 근로시간의 결정요인을 실증분석하였다. 추정 결과를 요약하면다음과 같다. 첫째, 대표적인 불평등지수인 평균로그편차(Mean Log Deviation)를 이용한 시간당임금과 근로시간의 불평등은 전반적으로 하락하고, 근로소득 불평등에 시간당 임금은80% 이상, 주당근로시간은 20% 이하를 기여하고 있었다. 또한, 근로시간과 시간당 임금의공분산이 매년 음(-)으로 추정되어 저임금 근로자가 고임금 근로자에 비해 더 길게 일하는 것으로 나타났다. 둘째, 개인의 근로시간 결정요인 추정결과, 시간당 임금에 대한 탄력성은 음(-)이었고, 여성의 시간당 임금 탄력성이 남성보다 크고, 근로시간은 남성보다 짧은 것을 확인할 수 있었다. 셋째, 정부의 장시간근로 지양정책으로 근로시간은 근로소득 수준과 무관하게 법정근로시간인 주40시간에 수렴하고 있었다. 이상의 분석 결과에서 근로시간의 불평등이 줄어듦에도 불구하고 여전히 근로시간과 임금간의 공분산이 음(-)이여서 소득불평등이 개선되고 있다는 시사점을 도출할 수 있다. Our study analyzes the trend of working hours inequality per week, the hourly wage and their correlation, then estimates how much they affect the labor income inequality in recent years and determinants of the working time by laborers with the Korea Labor & Income Panel Survey data from 1998 to 2021. Empirical results are as follows: first, the result using the MLD (the mean log deviation) as inequality index is that both hourly wage and working hours inequality per week have been generally declining, and the contribution of hourly wage and working hours for the labor income inequality has accounted for more than 80% and less than 20%, respectively. Additionally, the covariance between working hours per week and hourly wage has been estimated to be negative every year, indicating that low-wage workers work longer hours compared to high-wage workers. Second, estimation results for determinants of an individual’s working hours show that the elasticity of hourly wages was negative, and then its elasticity of women was greater than that for men, and women’s working hours were shorter than men’s. Third, working hours per week have converged to the statutory working hours, i.e. 40 hours per week, regardless of income classes. These results imply, despite a decrease in working hours inequality, the negative covariance between working hours and hourly wage suggests that improvements in income inequality are being triggered.

생활체육 활성화를 위한 전주천 고수부지 활용방안

임병만 전주대학교 자연과학종합연구소 1997 전주대학교 자연과학연구소 학술논문집 Vol.10 No.1

This study aims at utilizing the Chonjuchon to activate Physical Education for living. Firstly. it surveys the situation of Physical Education for living around Chonju city. It also shows the examination and analysis of the relative concept to represent the measure for promotion of sport activities for living. Basically, this study focuses on surveying the social values, facilities and programs for leader in Physical Education for living. The result are as follows. It is efficient to develop and manage the space around the Chonjuchon among other spaces of Physical Education for living. In addition, it is necessary to have the positive advertising strategy and upbring same tasters.

體格指數와 性格要因間의 相關關係에 對한 硏究

林炳萬 전주대학 문리학부 1983 文理論叢 Vol.1 No.-

To examine closely between the Pelidisi′s Index and characteristic factors, I surveyed the training student who major study physical activity on Wankwang University and Jeonju College in Jeonbuk province. The objects are total 595 se1ected; Dept. of Physical Education′s male and Dept. of Dancing′s female in Wankwang University, 292, and non-training male and female students(ordinary students) in Jeonju College, 303. The individual physique are checked and, on this base, calculated pelidisi′s Index, and I got the result as follows: 1. On the proportion of stature(height)and body weight, case of the male, training students(39.7%) are superior to non-training ordinary studnts(38.6 %),and case of the female is nearly like the male. On the case of pelidisi′s Index, case of the male, training students (94.3 %) are superior to non-training students(92.5 %), and the female is nearly like the male. 2. The distribution of Pelidisi′s Index has result as follow, On the case of the male, training student has that 87.3%of the whole distributed to B group(99-95) and C gronp(94-90), and non-training student has that 88.2% of the whole distributed to C group and D group (below 89). On the case of the female, the training has that 83.3%of the whole distributed to C group and D group, and the nontraining has that 84.3 % of the whole distributed to B group and c group. 3. On the Individual Group′s Score of characteristic factors of Pelidisi′s Index, the case of male, the training is lower than C group (94-90), A group(above100), B group(99-95) and D group(below89), and in the non-training, B group is lower than A, C, D, group. On the case of the female, the training has not any gap of score, and the non-training has that D group′s score is lower than D group. 4. On the correlation of Pelidisi′s Index and characteristic factors, the case of the male, the training and the non-training, both, have a certain correlation(O.41-0.62) equally in group B, C, and the other side, according to individual factors, group A, D has a little correlation or has no nearly it. The case of the female, the training has a certain correlation(0.42-0.48) in group C and the non-training has a certain correlation(0.44-0.47) in group C and D.

Income Distribution Effects of Imposing Carbon Tax on Transportation and Household Fuels

임병인,강만옥 한국교통연구원 2013 交通硏究 Vol.20 No.3

This study has analyzed the results of income distribution effects of the current energy-related taxes compared to when the carbon tax is levied on CO₂ emissions from transportation and households, by using the data from 2009 Survey of the Household Income & Expenditure Trends and applying Kakwani index. As a result, the following results were obtained: First, the most carbon dioxide emitting fuels were household LNG, gasoline and diesel oil in that order. Second, the carbon tax charge per household was analyzed to be greater for transportation fuels based on total households. Additionally, for transportation fuel, depending on income decile, the carbon tax increased at a constant rate, which reflected a regressive nature. Third, according to the Kakwani index's estimation result, the tax imposed on household fuels was proportional while the tax imposed on transportation fuels including carbon tax was mostly regressive. Fourth, all taxes imposed on transportation and household fuels were almost proportional. However, when carbon tax was additionally imposed, they were regressive. That is, in terms of equity, when carbon tax was imposed, it showed that low-income households would be relatively more disadvantageous than high-income households.

性, 年齡과 Harvard step test 成績과의 關係硏究

林炳萬 全州大學校 1981 論文集 Vol.10 No.-

After athletics, in order to examine the phenomenon of heart-rate's change, I have divided a group with grade, sex and height of tool, and have tested the Harvard Step Test. After that, I analyzed the data and we are able to recognize the result as follow: 1. After sport, girl students' number of heart-rate increase more than boy students'. 2. On 25㎝ of stool-height, elementary student is proved to increase more high grade than low, and on 33㎝ of stool-height is also revealed such tendency. Accordingly we can recognize the above statement, too. 3. On while sport or period of recovery's increasing number of heart-rate has enormous relation to the heart-rate before starting sport-repose's of heart-rate. 4. From this point of view, in case of evaluation of heart-rate's change about Harvard Step Test, it seems to me that method of determination of repose's number of heart-rate has more request of caution.

高麗時代 武戱의 體育的 價値에 關한 硏究

林炳萬 圓光大學校附設 生活體育硏究所 1995 生活體育硏究 Vol.6 No.-

The military play in Kory dynasty was investigated from viewpoints the historical development and progress of change and, the values in physical education in the light of the role. The martial act in primitive age for survival physical activity was changed for the military perposes with social development and the military play was formed as martial act was changed to play activity using leisure time with social development. The values of military play in physical education are as follows: 1. Physical value. military play was performed so frequently and as it was relcted to the promotion they concentrated on the improvement of skill and they could maintain their sound bodies. 2. Mental value. military play helped the participants and the spectators relieve their mental stress and get their mental satisfaction and balance by the fullfillment of their need of achievement through competition. 3. Social value. military play preformed such social effects of sports in socity as the maintain the maintenance of system, tension management, social unification, achievement of objectives, and adaptation at that time. The study of the results reprensets that the militory play in Kory dynasty provided a starting point of physical education in Korea changing from military to pure style.

스포츠 활동 참여와 여가만족의 관계

임병만 전주대학교 자연과학종합연구소 1996 전주대학교 자연과학연구소 학술논문집 Vol.9 No.2

The primary purpose of this study was to prove the relationship of sports participation and leisure satisfaction. In order to meet the mentioned purpose, subject for this study consisted of residents of chonbuk provinces in 1996. The sample of 591 employees (231 from sports paticipation, 260 from Non--sports participation) were collectes through stratified cluster random sample method. For the measurement of research variables, Beard and Ragleb's leisure satisfaction sccle. The statistical methods such as Analysis of Covariate and Multiple Regression Analysis were used to analyze the collectes data. From the analyses of the data, the study reaches the following concousion: Firstly, the socio-demographic characteristics exert influence on the sports participation and leisure satisfaction. Secondly, It was found that the leisure satisfaction of sports participants showed higher than Non-participants. Thirdly, Sports participation level of leisure satisfaction exert influence on the frequence and duration. Fouthly. Sports paticipation has positive effect on leisure satisfaction.