로 내 탈황을 위한 CaCO₃ 흡착제 입자의 분위기 기체와 체류 시간의 변화에 따른 특성

이강수,정재희,길상인,이형근,김상수,Lee, Kang-Soo,Jung, Jae-Hee,Keel, Sang-In,Lee, Hyung-Keun,Kim, Sang-Soo 대한기계학회 2010 大韓機械學會論文集B Vol.34 No.2

The in-furnace desulfurization technique is applied to the $O_2/CO_2$ combustion system for the carbon capture and storage (CCS) process because this combustion system does not need an additional chamber for the desulfurization. $CaCO_3$ sorbent particles, which have a wide range in size from a few nanometers to several tens of micrometers, are used for this process. In this study, an experimental system which can simulate the $O_2/CO_2$ combustion system was developed. $CaCO_3$ sorbent particles were exposed to the high temperature reactor at $1200^{\circ}C$ with various residence times (0.33-1.46 s) in air and $CO_2$ atmospheric conditions, respectively. The sorbent particles were then sampled at the inlet and outlet of the reactor and analyzed qualitatively/quantitatively using SMPS, XRD, TGA, and SEM. The results showed that the residence time and atmospheric condition in a high temperature reactor can affect the characteristics of the $CaCO_3$ sorbent particles used in the in-furnace desulfurization technique, such as the calcination rate and reaction mechanism. 추가적인 챔버를 필요로 하지 않는 로 내 탈황 기술은 순산소 연소 기술에 적용 가능할 것으로 기대되어 많은 연구가 진행중이다. 이때, 수 나노부터 수십 마이크로미터의 넓은 사이즈 분포를 가지는 $CaCO_3$ 입자가 흡착제로써 사용된다. 본 연구에서는 순산소 연소 시스템을 모사하는 랩스케일의 실험 장치를 구축하였다. $CaCO_3$ 흡착제 입자는 $1200^{\circ}C$로 설정된 고온 반응로에 각각 공기 분위기와 CO2 분위기에서 노출되게 된다. 이때 고온 반응로에서의 체류 시간을 0.33 ~ 1.46 초로 변화시켜 가면서 분석을 수행하였다. 흡착제 입자는 고온 반응로의 전단과 후단에서 각각 포집되어 주사형 이동도 입자계수기, X-선 회절장치, 열중량 분석기, 주사전자현미경 등을 사용하여 정성적/정량적으로 분석하였다. 결과적으로, 고온 반응로에서의 체류 시간과 분위기 기체성분이 흡착제 입자의 하소 반응률, 반응 메커니즘 등에 영향을 미침을 확인하였다.

탄소혼합물 접지전극의 접지임피던스의 특성

이강수(Kang-Soo Lee),이복희(Bok-Hee Lee) 한국조명·전기설비학회 2011 조명·전기설비학회논문지 Vol.25 No.5

This paper presents characteristics of frequency-dependent grounding impedance and transient grounding impedance for the carbon compound grounding electrode used in the installation of computerized electronic equipment and lightning protection system. The frequency-dependent grounding impedances were measured by applying sinusoidal currents in the frequency range from 100 [㎐] to 10[㎒], and the transient grounding impedances were examined by subjecting the impulse current with the front-time between 1∼80[㎲]. As a result, the ground resistance of the carbon compound grounding electrode is less than that of another type grounding electrodes. The transient grounding impedance is relatively low and the conventional grounding impedance is rather lower than the ground resistance. The frequency-dependent grounding impedance of the carbon compound grounding electrode is capacitive and the grounding impedance is decreased with increasing the frequency of injected currents. Therefore in the case that the carbon compound grounding electrode is jointly used with large-scaled grounding electrodes, it is possible to reduce the high frequency grounding impedance of the integrated grounding electrode system.

HSV 변환과 RANSAC을 사용한 강인한 차선 검출 방법

이강수(Kang-Soo Lee),박태형(Tae-Hyoung Park) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11

토양염분농도가 배추의 초기생육과 잎 기능에 미치는 영향

이강수(Kang-Soo Lee),최영선(Sun-Young Choi),최원열(Won-Yul Choi) 한국원예학회 1996 한국원예학회 학술발표요지 Vol.14 No.2

커뮤니티케어 담론으로서의 강점관점 연구

이강수(Lee Kang Soo),황명진(Hwang Myung Jin) 한국공공사회학회 2021 공공사회연구 Vol.11 No.1

본 연구의 목적은 커뮤니티 케어에서 ‘강점관점’은 어떻게 이해되고 실현될 수 있는지 탐색하는 것이다. 이를 위하여 우선, 커뮤니티 케어와 관련된 선행연구 검토를 통해 ‘지역사회 네트워크’, ‘다 직종 연계・협력’, ‘전 세대・전 대상 확대’, ‘재택생활 한계점 극대화’, ‘지역포괄지원센터의 부재’, ‘전달체계 이원화’ 담론을 도출하였다. 그리고 강점관점에 근거한 여섯 가지 정책적 방향성을 다음과 같이 제안하였다. 첫째, 지역사회 네트워크를 통해 공동체 기능을 회복해야 한다. 둘째, 다 직종연계・협력을 위한 전문가 임파워먼트가 필수적이다. 셋째, 전 세대・전 대상 확대 및 정상화를 통해 사회통합을 이루어야 한다. 넷째, 재택생활 한계점 극대화를 위한 환경적 개입이 이루어져야 한다. 다섯째, 사회복지관의 조직 회복탄력성이 필요하다. 여섯째, 해결 중심적 전달체계의 이원화가 필요하다. 마지막으로, 사회복지 거시실천 방법으로서의 강점관점의 중요성을 논의하였다. The purpose of this study is to explore how ‘strengths perspectives in community care can be understood and realized in the context of community care as a means of macropractice in social work. Methodologically investigators reviewed prior research on community care and draw up discourse on ‘community network, ‘multi-job linkage and cooperation, ‘expanding all households and ex-households, ‘maximizing home life thresholds, ‘absence of regional omprehensive support center, and ‘diversification of delivery system. Investigators then propose six policy recommendations based on strength perspectives as follows: First, community functions must be restored through community networks. Second, expert empowerment is essential for multi-occupation linkage and cooperation. Third, social integration should be achieved through the expansion and normalization of all households and households. Fourth, environmental interventions should be made to maximize the limitations of telecommuting. Fifth, social welfare centers need to be resilient to organizational recovery. Sixth, dualization of the solution-centered delivery system is needed. Finally, the importance of a strong point of view as a method of macro-practicing social welfare was discussed.

서명응의 (徐命膺) 노자이해 (老子理解)

이강수 (Kang Soo Lee) 연세대학교 국학연구원 1989 동방학지 Vol.62 No.-

N/A

타이어 해석을 위한 중첩된 기하 요소의 제거에 대한 연구

이강수(Kang-Soo Lee) (사)한국CDE학회 2015 한국CDE학회 논문집 Vol.20 No.2

In developing a tire, many CAE analyses are performed to make a better tire. But its meshing work is not easy, and it takes much time. One of the reasons of taking much time is that there are many overlapped geometric entities in CAD data that are modeled in CAD system by CAD engineers. In this study, we studied about the features of the overlapped geometric entities, and the method to find out and delete them. I developed a program using the proposed algorithm, and applied it in meshing tire pattern and tire case. I proved that the time in meshing a tire reduced dramatically by removing overlapped geometric entities by using the developed program.

道家에서의 정신과 물질

이강수(Kang Soo Lee),송항룡(Hang Lyong Song) 한국철학회 1990 哲學 Vol.35 No.-

미곡생산의 효율성 증대를 위한 농업조정

이강수 ( Kang Soo Lee ) 한국농업경제학회 1983 農業經濟硏究 Vol.24 No.1

Since (1) rice was a main food of Korean people, (2) world prices for grains were unstable, (3) and conservation of foreign currencies was necessary for the balance of payments, the Korean government set the achievement of self-sufficiency in rice as one primary goal. However no economic unit can continue to function effectively without due consideration given to economic well-being of individual farmers, economic well-being of rice farmers should be promoted for continuous and effective increase of rice production. Actual level of input use was lower than profit maximizing level for 1971-1977, whereas the actual the actual level was higher than the maximum profit level for the following two periods, 1965-1970 and 1978-1981. Therefore economic profit of rice farmers has been decreased in recent years. On the other hand, since input had negative effect in contrast to the positive effect of output for the farm income growth, input decrease and output increase were needed. As a result, to increase the profit maximiing level of input and farm income, resource efficiency should be increased. However, with the ratio increase of capital resource input to total input, the decreased capital resource efficiency caused the decline of total resousce efficiency. Therefore the increase of capital resource efficiency becomes a determinant factor for the increase of total efficiency. From the results of statistical analysis, efficiencies of three major capital resources increased as farm size increased and the differences of efficiencies among the various levels of farm size were statistically significant. Thus expansion of farm size is needed to increase the total efficiency through the increase of capital resource efficiencies. From the survey results of 100 farm households in Chung-Buk area, it is proposed that credit system for purchasing paddy land be considered to increase farm size in small scale farms less than 1.5ha with due consideration of interest rate and of the reduction of internal capital rationing through the VMP increase, and that working process be faciliated by mechanization in large scale farms more than 1. 5 ha. That is, MPP and product price should be increased by the technolgical advance and government price policy, and agicultural mechanization should be promoted in such ways to solve hard working process as well as labor shortage problem.

IEEE를 적용한 축전지 적정용량에 관한 연구

이강수(Kang-Soo Lee),최홍규(Hong-Kyoo Choi),박준열(Joon-Yeal Park),신혜영(Hye-Young Shin),조시현(Shi-Hyun Cho),장래창(Rae-Chang Jang) 한국조명·전기설비학회 2011 한국조명·전기설비학회 학술대회논문집 Vol.2011 No.5월

축전지 용량 산정 방식은 일본 공업협회규격(SBA 6001)에서 제시한 방법과 IEEE Std.에서 제시한 두 가지 방식이 있으며, 현재 우리나라는 축전지 용량 산정시 일본 공업협회규격(SBA규격)을 인용하여 사용하고 있다. 본 논문에서는 점차 다양해지는 부하에 따른 적정한 축전지 용량 산정을 위하여 부하패턴에 따라 두 가지 방식을 적용하여 계산 후 실부하 방전실험을 통하여 비교 검토하였다.