연소제어시스템과 열효율 향상 방안에 관한 연구

장용남,박수홍,Zhang, Yong-Nam,Park, Soo-Hong 한국전자통신학회 2010 한국전자통신학회 논문지 Vol.5 No.6

In this research, the problem of combustion and its system in Hyundai Heavy Industries and Sachuan Unison will be analyzed in order to provide some methods of thermal efficiency improvement and help to make a positive influence on fuel savings and their productivity. In forging industries, in order to improve the material properties of the industrial heating elements which are being used, depending on different operation conditions of system equipment and combustion systems, fuel consumption and material properties can get a profound influence. Thus, analyzing about combustion system characteristics of 100 tons heating furnace and heat treatment furnace which are in operation in Hyundai Heavy Industry will be done. In usual, air-fuel ratio is proper for capacity of burner installed in each heating device, otherwise burner gets an automatic turn down ratio. It has a profound influence on heating performance and precision of temperature because it is the fixed characteristics of every industrial furnace. Even if there are some methods to improve the heating performance of a furnace installed with a large capacity burner, it is very difficult to obtain the precision of temperature in maintenance interval. Based on this, performance of burner can be drove to best by improving combustion system. Proper Combustion characteristic for each heating interval was analyzed in heating furnace in Hyundai Heavy Industry. A project plan for improving fuel savings and increasing precision of temperature was presented in this research. 본 연구에서 울산 현대중공업 및 사천 유니슨에 설치사용 중인 공업용로의 연소문제 및 시스템을 분석하고 열효율 개선방안을 제시하여 연료절감 및 생산성 향상에 도움이 되고자 한다. 단조산업에 사용 중인 공업용로는 원소재의 가열 및 재료의 특성향상을 위한 설비로 운전조건 및 연소시스템에 따라 연료의 사용량 및 재료의 특성에 지대한 영향을 줄 수 있다. 따라서 현대중공업에 설치운전 중인 100톤 가열로 및 열처리로의 연소시스템의 특성을 분석하였다. 통상적으로 각 가열장치에 설치된 버너(Burner)는 용량에 맞는 공연비를 가지며 버너가 작동할 수 있는 Turndown ratio를 가지고 있다. 이는 각각의 공업용로 특성을 정하는 것으로서 가열성능 및 온도정밀도에 지대한 영향을 미친다. 용량이 큰 버너를 설치한 열처리로는 가열성능은 향상시킬 수 있어도 유지구간에서의 온도정밀도를 얻기 힘들다. 이에 버너의 성능을 최대한 발휘할 수 있도록 연소시스템을 개선하여 각 가열구간에 맞는 연소특성을 적용 분석한 현대중공업의 가열로 및 열처리로를 예시로 연료의 절감 및 온도정밀도를 향상시키도록 본 연구에서 방안을 제시하였다.

소형 사업장 근로자들의 건강증진 생활양식에 영향을 미치는 요인

장용남,이은경,정명수,전선영,김상덕,정재열,장두섭,송용선,이기남,Jang Yong-Nam,Lee Eun-Kyoung,Chong Myong-Soo,Jun Sun-Young,Kim Sang-Deok,Jeoung Jae-Yul,Jahng Doo-Sub,Song Yung-Sun,Lee Ki-Nam 대한예방한의학회 2001 대한예방한의학회지 Vol.5 No.1

Oriental medicine needs to be armed with theories on health-improvement concept under it and basic data matching its views, in order to participate in the health-improvement service in industrial work places. The Orient medicine health-improvement program defines factors that determine individuals' lifestyle, and provides information and technologies for workers to practice in life. To that end, this research compares and analyzes health-improvement concept and health care, defines relations between individuals' health state and their lifestyle as the basic data needed to perform health-improvement business for workers. 1. The subjects employed for this research is categorized into; by gender, males 52.1% and females 47.9% with no big difference between them; and by age, 20s, 6.1%, 30s. 33.9%, 40s, 34.1%, and 50s, 24.8% with 30-50 accounting for most of it. By marriage status, unmarried represents 7.1%, and married 79.1% with most of them married; by revenue, under one million won represents 3.0%, 1-2 million won 26.4%, 2-2.49 million won 11.2%, above 2.5 million won 11.2%, and 1-2.5 million won a majority. By living location, owned houses represents 65.4%, rented houses 14.7%, monthly-rented 9.5%; and by education, elementary and middle school represent 16.9%, high school and its dropouts 22.6%, and junior college and higher 51.6%, with high school and higher occupying most of the group. 2. By job, office workers and managerial workers represent 12.3%, part-timers 21.0%, manual workers 11.4%, jobless 0.6%, professionals 35.6%, service 0.6%, housewives 8.4%, and equipment/machinery operation/assemblers 10.1%. Of this, jobless and part-timers, totaling three, are dropped from this research. By years worked, 0-3.9 years represents 9.7%, 4-7.9 years 6.7%, 8-14.9 years 18.4%, above 15 years 28.7%, and no respondents 36.5%. 3. The degree of the subjects practicing life-improvement lifestyle, on a scale of 1 to 4, is an average of 2.69, personal relations 3.04, self-realization 2.92, stress management 2.76, nutritional state 2.73, responsibility for health 2.47, and athletic activities 2.18, with personal relations earning the highest points and athletic activities the lowest. As for factors influencing health-improvement lifestyle, there is no significant difference between gender, age, and marriage status. Meanwhile, there is significant difference between revenue, dwelling pattern, education level, etc. That is, higher income-bracket, owned houses, rented houses, monthly-rented houses, and higher-educated, in this order, show higher average in health-enhancement lifestyle. By job, housewives, manual workers, office workers, professionals, equipment/ machinery operation/ assemblers, and part-timers, in this order show higher points, while there is no difference with significance by years worked. 4. Factors that affect health-improvement lifestyle are shown below. Self-realization is influenced by age, marriage status, type of dwellings, and level of education; responsibility for health by type of dwellings; athletic activities by gender and age; nutrition by age, marriage status and type of dwellings; personal relations by marriage status; and stress management by type of dwellings. 5. Areas with high points by job show this: in self-realization, office workers, manual workers, housewives, professionals, equipment/ machinery operation/ assemblers, in this order, show difference with significance; in the area of responsibility for health, manual workers, housewives, equipment/ machinery operation/ assemblers, professionals, office workers and part-timers, in this order, do. In athletic activities, manual workers, housewives, office workers, professionals, equipment/ machinery operation/ assemblers, and part-timers, in this order, show difference with significance; in nutrition, housewives, office workers, manual workers, professionals, equipment/ machinery operation/ assemblers, and part-timers, in this order do; and in stress, hou

『五臺山 上院寺 重創勸善文』의 書藝學的 小考

장용남(Jang, yong-nam) 한국서예학회 2007 서예학연구 Vol.10 No.-

인류의 문화는 문자와 더불어 발전해 왔고, 위대한 문화를 창조해 왔던 민족, 국가는 그 나름대로의 고유문자를 가지고 있다. 문자는 그 민족 그 나라의 문화와 삶을 기록하고 보존하고 후대에 전달하는 가장 중요한 수단과 핵심적인 역할을 담당하며 그 나라의 사회 조직을 결속시키고 질서를 유지하는 등 문화를 總合하는 대표적인 상징으로 이해되고 있다. 이러한 문자는 실용적 수단과 역할 중심으로 창제되었으나 점차 문화가 발전하면서 예술화되어 갔다. 우리나라 한글은 민족적 자주와 기회 균등, 실용 과학의 이념아래 『훈민정음』으로 창제되었으나 실제 민중생활에는 그다지 실용화되지 못했고 『동국정운』, 『용비어천가』 등의 간행이나 불경 언해 등의 언해 사업에 주로 이용되어왔다. 세조10년 (1464)에 서사된『오대산 상원사 중창권선문』은 ｢권선문｣과 ｢어첩｣으로 구성되어 있으며 붉은색 비단 표장으로 된 접본의 책으로 합책의 크기는 세로30cm×가로846cm 로 국보 292호이다. 훈민정음 제정이후 현재 전해지는 가장 오래된 필사본으로 당시의 실용언어가 반영되어 있고 왕족이나 신하 승려 등 다수의 인물이 나타나며 이들의 수결과 여러 가지 物目이 기록되어 있어 서체연구는 물론 어문학 및 당시의 문화를 연구할 수 있는 가치가 높은 귀중한 자료이다. 『상원사 중창권선문』은 기하학적인 한글고체의 형태에서 필사체로의 전변과 음운체계에서 조형체계로의 전환 즉 창제 때의 한글고체에서 과도기를 거치며 하나는 한자 筆意로 자유롭게 쓴 서간체의 형태로 다른 하나는 음운구조가 갖는 문자로서의 고유성을 살려나가는 궁체로의 전변이며 바로 그 정점에 『상원사 중창권선문』이 있다. 『상원사 중창권선문』의 특징은 첫째 훈민정음이 반포된 이후 가장 오래된 한글필사자료라는 점. 둘째 언해부분에는 傍點을 지니고 있으며, 당시의 어휘․문법 및 서체 등의 연구 자료가 된다는 점. 셋째 부왕인 세종으로부터 물려받은 세조의 돈독한 불심과 信眉, 學悅, 學祖등 당대의 고승들의 정치행적을 연구하는 데 빼놓을 수 없는 자료라는 점이다. 본 考에서는 ｢권선문｣과 ｢어첩｣에 대한 字體분석을 통해 조맹부의 松雪體가 15세기 조선전반기에 미친 영향을 살펴보았으며 다수의 중앙 및 지방 관리들의 직함과 개성적인 수결을 통해 당시에 서사된 文字審美意識을 알아보았다. 아울러 언해문에 나타난 자모음의 구조와 합자의 형태를 통해 한글서체의 변천과정에 어떤 영향을 주었는지에 대하여 살펴보고 한글서체의 변화양상을 조명해 봄으로써 이 시대 한글서예의 새로운 서체미감을 담아내고 創新의 세계를 모색하기 위한 原形性의 탐색이라고 할 수 있다. The culture of human beings has developedalong with character, and a nation and its people that have created a great culture have its unique characters. Characters play a pivotal role in recording, preserving theirculture and life and passing them on to the next generation. There characters had been created, focusing on their practical means and role, but they became artistic along with a developed culture. 『Mt. OdaeTemple Sangwon Jungchang Kwonson Writing』transcribed in King Sejo's 10th year (1464), are made up of「Kwonson Writing」and「Uhcheop」and it was designated as National Treasure No. 292. It is covered with red silk and the books are 30cm in length and 846cm in width. It's the oldest transcription since the creation of the Korean script, and reflects the practical language used at the time. It also includes various figures such as royal families, subjects and Buddhist monks, and records their signatures and several lists of articles. So it is a valuable material that can help study handwriting, literature and culture at the time.『Mt. Odae Temple Sangwon Jungchang Kwonson Writing』underwent the transitional period from Korean geometric archaic-style characters to transcription letters and from a phonological system to formative one. The one is an epistolary style that freely writesChinese characters and the other shows a shift into a court style of writing the Korean script that makes the most of the uniqueness of letters, and『Mt. Odae Temple Sangwon Jungchang Kwonson Writing』is at its height. 『Mt. Odae Temple Sangwon Jungchang Kwonson Writing』has thee characteristics. First, it is the oldest transcription materialsince the announcement of the Korean script. Second, there are side dots in Korean translationof Chinese classics and it provides research material in terms of glossary, grammar and handwriting. Third, it is a valuable material to study the King Sejo's mercy of Buddha inherited from his father King Sejong, and the political achievements of high priests living at the time such as Shinmi, Hakyeol and Hakjo. This study examined the aesthetic appreciation of characters at the time by looking at theircharacteristic signatures and official titles of central and local officials, and the effects of Cho Maeng-bu's 'Songseul style' on Chosu dynasty of 15th century by analyzing character style of 「Kwonson Writing」and「Uhcheop」. In addition, it looked at the influences of the structures of consonants vowels as well as the types of ligature shown in 'Uhnhae'writings on the developments of Korean handwritings. It also searched for the prototype to find the worldof new creation, and showed new esthetic sense of Korean calligraphy by looking at the changing pattern of Korean handwriting.

상용연소조건 에서의 수소-NG 혼소 거동연구

장용남(Yongnam Jang),김명규(Myunggyu Kim) 한국연소학회 2023 KOSCOSYMPOSIUM논문집 Vol.2023 No.11

어성초 추출물의 세포독성(IX)

이기남,이정호,송용선,정재열,김삼태,임진아,이인아,유형원,장용남,이택준,김홍기,천현자,유일수,김종수,백승화,Lee, Ki-Nam,Lee, Jeong-Ho,Song, Yong-Sun,Jeong, Jae-Yeal,Kim, Sam-Tae,Lim, Jin-A,Lee, In-A,Ryu, Hyeong-Won,Jang, Yong-Nam,Lee, Taek-Jun,Kim, 대한예방한의학회 2003 대한예방한의학회지 Vol.7 No.1

This study was carried out to evaluate cytotoxic effects of Houttuynia cordata $T_{HUNB}$ extracts on A549(lung cancer), B16(mouse melanoma), MDA-MB231(breast cancer) and SNU-C4(colon cancer) cell lines. We have determined by 3-(4, 5-dimethylthiazol-2-Yl)-2, 5-diphenyl-2H-tetrazoliumbromide(MTT) assay. The $150{\mu}g/ml$ concentration of chloroform extract of Houttuynia cordata $T_{HUNB}$ was shown significantly antitoxic activity on MDA-MB231$(65.96{\pm}5.68%)$ and SNU-C4$(55.94{\pm}7.39%)$ cell lines.

포구 속도 측정을 위한 X-band CW 도플러 레이더 개발

김재헌(Jae-Heon Kim),고영목(Yeong-Mok Koh),남궁성원(Sung-Won Namgung),장용식(Yong-Sik Jang),박용석(Yong-Seok Park),나극환(Keuk-Hwan Ra),최익권(Ik-Kwon Choi) 한국전자파학회 2009 한국전자파학회논문지 Vol.20 No.5

본 논문에서는 포구 속도 측정을 위한 X-band CW(Continuous-Wave) 도플러 레이더 구현에 관해 기술하였다. 본 논문에서의 레이더 구성품은 마이크로웨이브 송수신부, 신호 처리부, 전원부이며, 레이더의 운용 및 시험을 위하여 운용/분석 프로그램을 제작하였다. 레이더 송신 주파수는 중심 주파수 f ?에서 ±3 ㎒ step의 5개 채널로 가변되며, 송신 출력은 25 ㏈m이다. 레이더의 최소 유효 수신 전력은 -117 ㏈m이다. 이러한 레이더의 기능은 비행 중인 탄자의 도플러 주파수를 획득하고 정밀 속도 점을 계산하여 최초 포구 이탈 순간의 속도를 추정한다. 레이더의 성능 평가는 현재 화포 시험에 적용되는 기준 장비를 사용하여 155 ㎜ 화포 사격 시험을 통해 삼각대 장착, 포신 장착의 두 가지 방법으로 비교 실시하였다. 기준 장비와의 비교 결과, 동등 성능임을 확인할 수 있었다. In this paper, we described the implementation of the X-Band continuous-wave doppler radar for muzzle velocity measurement. The radar is consisted of microwave transceiver, signal processor, power board, and the measuring program was developed for the operating and field test. The operating frequency of doppler radar is able to set ±3 ㎒ with 5 channel from the center frequency, and the output power is 25 ㏈m. The minimum receiving power is -117 ㏈m. The radar would obtain the doppler frequency from the artillery, and calculate accurate velocity point and then estimate muzzle velocity. The performance test for this radar was done with 155 ㎜ at barrel and tripod mounted, and also compared the performance with the reference radar. As a result, the performance of the our new radar is equal with the reference one.