AIR DISTRIBUTION

김태한,Kim, Tae-Han 한국설비기술협회 1990 설비 : 공조ㆍ냉동ㆍ위생 Vol.7 No.4

조경기술기반 LID 시스템 적용을 통한 선릉·정릉 권역의 첨두유출량 분석

김태한,최종희,Kim, Tae-Han,Choi, Jong-Hee 한국전통조경학회 2017 한국전통조경학회지 Vol.35 No.4

본 연구는 조경기술기반 LID 시스템 적용에 따른 선릉 정릉 권역의 우수유출변화를 수문학적 관점에서 분석하였으며, 연구결과를 다음과 같이 정리할 수 있다. 첫째, 광화문 침수가 발생한 2011년 7월 27일 기준 최대순간강우량은 27일 10시에 기록된 183mm/hr로 시간당 최대강우량 57.5mm/hr에 비해 3배 이상의 강우강도가 10분간 집중된 것으로 확인되었다. 둘째, 토심기준 시나리오에서 담심 1,500mm의 경우 첨두유출량 제어가 가능하여 해당 조경기술기반 LID 시스템 적용 시 선릉 정릉 권역의 수해취약성을 개선할 수 있을 것으로 판단된다. 셋째, 담심 기준 시나리오에서 모든 토심 모형에서 첨두유출량 제어가 이루어지지 않았으나, 최초 우수유출을 토심 기준 시나리오에 비해 4시간 10분의 추가적인 지연효과를 기록하였다. 초기 우수유출저감에는 토심, 첨두유출량에는 담심이 상대적으로 중요한 지표로 해석되었다. 이를 통해 문화재 보호권역 내 경관친화적인 생태적 요소를 시스템화하여 적용할 경우 예상되는 수해방재효과를 이론적으로 확인할 수 있었다. This study analyzed hydrological changes of stormwater runoff of Seolleung Jeongneung zone according to the application of LID system based on landscape Architectural technology. The results are as follows. First, when flooding occurred in Gwanghwamun in July 27, 2011, the maximum instantaneous rainfall amount was 183 mm/hr recorded at 10:00 on 27th for 10 minutes, and it was confirmed that rainfall intensity more than three times as high as the maximum rainfall of 57.5 mm/hr. Second, it is possible to control peak flow rate in the case of 1,500mm of soil thickness, so that it is possible to improve the vulnerability of flood damage in Seolleung and Jeongneung zone when applying the LID system. Third, in the berm height scenario, peak flow rate control was not controled in all depth level models, but the first stormwater runoff was delayed by 4 hours and 10 minutes compared to the soil thickness scenario. It was interpreted as a relatively important indicator the soil thickness for the initial stromwater runoff reduction and the berm height for the peak runoff. Through this, the systematic adaptation of landscape-friendly ecological factors within the cultural property protection zone could theoretically confirm the effects of flood disaster prevention.

다중이용시설 내 식생바이오필터 시스템의 PM₁₀, PM_2.5 저감효과 및 측정방법에 대한 연구

김태한,최부헌,Kim, Tae-Han,Choi, Boo-Hun 한국조경학회 2020 韓國造景學會誌 Vol.48 No.5

2019년 3월 미세먼지 비상저감조치가 일주일 동안 발령되면서, 미세먼지로 인한 국민의 불안감은 점차 가중되고 있다. 본 연구는 공기정화식물이 적용된 바이오필터의 다중이용시설 내 적용성 평가를 위해 입자상 오염원의 실내 연속방출환경을 조성하여 오염원 저감효과에 대한 측정방법을 제안하고, 시스템의 실내공기질 개선 여부를 확인할 수 있는 기초연구를 진행하였다. 강의실을 대상으로 춘절기에 모니터링 1시간 전 모기향을 오염원으로 배경농도를 조성한 후, 스케줄에 따라 2시간 관수, 1시간 송풍하여 미세먼지의 저감능을 확인하였으며, 바이오필터 2m 전방에 PM₁₀, PM_2.5 및 온습도 센서를 설치하고, 3개 송풍구 중 중앙에 풍속 프로브를 설치하여 시계열 모니터링을 수행하였다. 바이오필터에 구비된 총 3개소의 송풍구 평균 면풍속은 0.38±0.16 m/s로 댐퍼 면적이 제외된 송풍구별 면적 0.29m×0.65m을 적용한 총 공조풍량이 776.89±320.16㎥/h로 산출되었다. 시스템 가동으로 평균온도 21.5~22.3℃, 평균상대습도 63.79~73.6%를 유지하여, 선행연구의 다양한 조건별 온습도 범위에 부합하는 것으로 판단된다. 시스템 공조부 구동을 통해 급격하게 상대습도를 상승시키는 효과를 효율적으로 운용할 경우, 계절에 따른 실내 미세먼지 저감과 적정한 상대습도 확보도 가능할 것으로 판단된다. 미세먼지 농도는 바이오필터 시스템 가동 전의 모든 주기에서 상승 현상이 동일하게 집계되었으며, 시스템 가동 후 1주기 송풍구간(B-1, β=-3.83, β=-2.45)에서 미세먼지(PM₁₀)는 최대 28.8% 수준인 560.3㎍/㎥, 초미세 먼지(PM_2.5)는 최대 28.0% 수준인 350.0㎍/㎥까지 저감되었다. 이후 미세먼지(PM₁₀, PM_2.5)의 농도는 2주기 송풍구간 감소(B-2, β=-5.50, β=-3.30)로 각각 최대 32.6% 수준인 647.0㎍/㎥, 32.4% 수준인 401.3㎍/㎥까지 저감되었고, 3주기 송풍구간감소(B-3, β=5.48, β=-3.51)로 최대 30.8% 수준인 732.7㎍/㎥, 31.0% 수준인 459.3㎍/㎥까지 저감된 것으로 확인되었다. 본 연구는 식생 바이오필터의 다중이용시설 내 설치와 유관한 관련 표준 및 규정을 참조하여, 객관적인 성능평가환경의 구축 방안을 제시할 수 있었다. 이를 통해 일반 강의실 환경 내에 보다 객관화된 모니터링 인프라를 조성하여, 상대적으로 신뢰성 있는 데이터 확보가 가능했던 것으로 판단된다. With the issuance of one-week fine dust emergency reduction measures in March 2019, the public's anxiety about fine dust is increasingly growing. In order to assess the application of air purifying plant-based bio-filters to public facilities, this study presented a method for measuring pollutant reduction effects by creating an indoor environment for continuous discharge of particle pollutants and conducted basic studies to verify whether indoor air quality has improved through the system. In this study conducted in a lecture room in spring, the background concentration was created by using mosquito repellent incense as a pollutant one hour before monitoring. Then, according to the schedule, the fine dust reduction capacity was monitored by irrigating for two hours and venting air for one hour. PM₁₀, PM_2.5, and temperature & humidity sensors were installed two meters front of the bio-filters, and velocity probes were installed at the center of the three air vents to conduct time-series monitoring. The average face velocity of three air vents set up in the bio-filter was 0.38±0.16 m/s. Total air-conditioning air volume was calculated at 776.89±320.16㎥/h by applying an air vent area of 0.29m×0.65m after deducing damper area. With the system in operation, average temperature and average relative humidity were maintained at 21.5-22.3℃, and 63.79-73.6%, respectively, which indicates that it satisfies temperature and humidity range of various conditions of preceding studies. When the effects of raising relatively humidity rapidly by operating system's air-conditioning function are used efficiently, it would be possible to reduce indoor fine dust and maintain appropriate relative humidity seasonally. Concentration of fine dust increased the same in all cycles before operating the bio-filter system. After operating the system, in cycle 1 blast section (C-1, β=-3.83, β=-2.45), particulate matters (PM₁₀) were lowered by up to 28.8% or 560.3㎍/㎥ and fine particulate matters (PM_2.5) were reduced by up to 28.0% or 350.0㎍/㎥. Then, the concentration of find dust (PM₁₀, PM_2.5) was reduced by up to 32.6% or 647.0㎍/㎥ and 32.4% or 401.3㎍/㎥ respectively through reduction in cycle 2 blast section (C-2, β=-5.50, β=-3.30) and up to 30.8% or 732.7㎍/㎥ and 31.0% or 459.3㎍/㎥ respectively through reduction in cycle 3 blast section (C-3, β=5.48, β=-3.51). By referring to standards and regulations related to the installation of vegetation bio-filters in public facilities, this study provided plans on how to set up objective performance evaluation environment. By doing so, it was possible to create monitoring infrastructure more objective than a regular lecture room environment and secure relatively reliable data.

고온기류중에 재분사된 연소기 후류의 수치해석

김태한,권형정,Kim, Tae-Han,Gwon, Hyeong-Jeong 대한기계학회 1997 大韓機械學會論文集B Vol.21 No.7

Combustion of gaseous fuel combustor in a high temperature vitiated air stream was studied with computer simulation. It is for application to afterburner of gas turbine engine which the exact mechanism is not yet clarified. As the jet velocity from fuel nozzle is very high and the geometry of combustor is three dimensional complex structure, many time and money are required to have good results. To consider this demerit, it is simplified to 2-dimensional and modified with the nozzle hole area to same area of annual status. As the thickness of annual is too thin, it is to divide with the many grids for reasonable results. Accordingly, new method which injected fuel mass, momentum and energy are added to source terms of each governing conservation equation as a source terms is introduced like as two phase analysis. Reaction rate is determined by taking into account the Arrhenius reaction based on a single step reaction mechanism. It is focused to temperature and product concentration distribution at each equivalence ratio of inlet hot product.

적외선 영상 표적추적 성능 개선을 위한 적응적인 자동문턱치 산출 기법 연구

김태한,송택렬,Kim, Tae-Han,Song, Taek-Lyul 제어로봇시스템학회 2011 제어·로봇·시스템학회 논문지 Vol.17 No.6

It is very critical for image processing of IIR (Imaging Infrared) seekers to achieve improved guidance performance for missile systems to determine appropriate thresholds in various environments. In this paper, we propose automatic threshold determination methods for proper thresholds to extract definite target signals in an EOCM (Electro-Optical Countermeasures) environment with low SNR (Signal-to-Noise Ratios). In particular, thresholds are found to be too low to extract target signals if one uses the Otsu method so that we suggest a Shifted Otsu method to solve this problem. Also we improve extracting target signal by changing Shifted Otsu thresholds according to the TBR (Target to Background Ratio). The suggested method is tested for real IIR images and the results are compared with the Otsu method. The HPDAF (Highest Probabilistic Data Association Filter) which selects the target originated measurements by taking into account of both signal intensity and statistical distance information is applied in this study.

계명대학교의 정신과 이상

김태한,Kim, Tae-Han 한국대학교육협의회 1984 大學敎育 Vol.11 No.-

액체 수송계에 대한 고장 검출 진단시스템의 설계

김태한,함영민,이기상 ( Tae Han Kim,Yeong Min Hahm,Kee Sang Lee ) 한국화학공학회 1995 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.33 No.6

In this study, a fault detection and isolation system(FDIS) is constructed for the supervision of the liquid transportation system that is composed of DC-motor, centrifugal pump and pipe-lines. The FDIS consists of the residual generator, detection logic and fault isolation logic and it can be classified as the dedicated observer scheme(DOS). The system can detect the occurrence of sensor faults and identify the failed, sensor. And the process faults that may occurr in the components such as DC-motor, centrifugal pump and pipe-lines can be promptly detected and diagnosed with the FDIS. It may provide an effective way that will enhance the safety and the functional reliability of the fluid transportation systems.

옥상녹화시스템의 기온조절효과와 태양광발전효율간의 상호연관성 규명을 위한 전산해석연구

김태한(Kim, Tae Han),박성은(Park, Sung Eun) 한국태양에너지학회 2013 한국태양에너지학회 논문집 Vol.33 No.4

These day cities experience serious climatic changes due to environmental load caused by disturbance in the circulation systems of water resources and energy. As technological improvement to respond to various climatic changes and disasters are also requested in the field of construction, inter-disciplinary studies linked to the establishment of sustainable environmental control and energy systems is required in a consilient perspective. This study aims to infer correlations in the impact of environmental changes caused by rooftop greening system on the photovoltaic power generation efficiency through computer simulation in an integrated perspective. By doing so, it seeks to provide basic study for developing a photovoltaic system integrated with building revegetation that is sustainable in environmental and resource aspects. A simulation showed that, in the case of sunshine hours in June, the green surface indicated temperature lowering effects of 9.19°C on average compared to the non-green surface and temperature was 9.81°C lower. Due to such greening effects, at the highest sunlight timepointin June, Pmpp improved 119W and heat loss rate dropped 7.8%.

외국인 근로자의 고용허가제서설

김태한(Kim, Tae-Han) 한국민사법학회 2004 民事法學 Vol.25 No.-

Accompanying its rapid industrial growth, Korea has seen many foreign workers flowing in and out. With its higher wages, Korea has drawn many foreign workers from South East Asian poor countries, filling up its shortage of workers for hard or menial jobs in small or medium-level manufacture. However, Government has maintained the prohibition policy of foreign workers employment in spite of the stark reality of supply and demand. This had caused the illegal aliens to increase quickly, the labor market to get twisted, and the menial worker shortage to be more serious. Initially, Government met this situation with the mild measure of so-called Industrial Trainee Program, which resulted adverse rather than plausible effects, such as fraud in trainees invitation, workers human rights infringement, workers fleeing from work site, etc. Eventually, Government has legalized foreign workers employment by adopting the policy of Government Permission on Foreigners Employment introduced in the Act of Foreign Workers Employment and Related Matters. The enaction of the law has put an end to the problems of workers shortage in the small or medium-level manufacture, workers human right infringement, management of foreign manpower, as well as increase of illegal aliens. This thesis introduces the Act with the contents consisting of the following sections. Ⅰ. Preliminary Questions Ⅱ. Foreign Legal Precedents Ⅲ. Law Concerning On Foreign Labourers Employment 1 Status of Foreign Employees 2 History of Enacting 3. Subject Matters of the Act Ⅳ. Summary 1. Government s Permission and the Labor Law 2. Outlook In summary, the policy permits small or medium-size industries to enjoy lawful employment of foreign workers. They can hire aliens openly. They are given the opportunity to utilize stable three-year alien employment without worry of desertion. And they can minimize their manpower management expense by taking advantage of Government s service on management, grievance, and education. In return, the industries bear the duty to treat alien workers fairly and rightfully pursuant to domestic law. This will ease the anti-Korean sentiment which has been generated among the pertinent countries by undue treatment of foreigners by the industries. At the same time, this will also enhance the Korean national dignity and merchandise prestige.

항공법,정책 : 공항시설법 제정(안)의 내용과 쟁점

김태한 ( Tae Han Kim ) 한국항공우주법학회 2011 한국항공우주정책·법학회지 Vol.26 No.2

항공법은 1961년 이래 항공운송사업과 항공안전 및 공항에 관련되는 모든 사항을 규제해 왔다. 그러나 글로벌 경쟁이 필요한 오늘날의 항공운송산업의 여건에서는 국제항공운송시장에서 항공운송사업을 효율적으로 지원하고 국민들에게 안전한 항공교통서비스를 효과적으로 제공하여야 하는 새로운 도전에 직면해 있다. 이러한 때에 시의적절하게 정부에서 「항공법」을 분법하여 항공사업법, 항공안전법, 공항시설법으로 입법예고를 하였다. 여기에서는 우선 입법예고되어 있는 공항시설법(안) 즉 공항관련법령에 대하여 국내의 교통관련 법제 및 일본의 항공관련법령의 체계를 살펴보고 공항시설법(안)의 편제 등에 대한 시사점을 찾아 보고자 한다. 아울러 동법(안)의 배경과 편제, 주요 내용을 신설하는 사항을 중심으로 주요내용을 소개하고자 한다. 이어서 동법(안)이 제정되기 전에 논의할 필요가 있는 사항에 대하여 쟁점사항을 도출하여 문제를 제기하고 이에 대한 대안을 제시하고자 한다. 특히 공항시설법(안)의 명칭, 공항운영·관리자 지정에 관한 문제, 공항개발사업의 공항시설 국가귀속에 관련되는 회계처리 문제, 행정청의 권한을 위임할 필요가 있는 경우 이를 명문으로 위임하여 권한 행사의 근거를 명확히 하는 문제 등에 대하여 논의의 단초를 제공하고자 한다. 결론적으로 현행 「항공법」을 운송사업에 관한 법, 공항에 관한 법, 항공안전에 관한 법으로 분법하는 것은 각각의 산업을 효과적으로 규제, 촉진 및 조성하기 위하여 반드시 필요할 것으로 생각한다. 즉 항공관련 법령도 수범자, 공정경쟁, 안전규제, 효율성 등의 관점에서 분법이 이루어져 항공산업의 총합적인 발전은 물론 항공안전의 확보 및 공항운영의 글로벌 경쟁력을 제고할 수 있는 방향으로 개별법화의 과정이 진행되는 것이 바람직하다고 할 것이다. Since 1961, Aviation Act has regulated all aspects related to air transport business, aviation safety and airport. However, we are to face the new challenges that have to support air transport business more efficiently and air transportation services to the people effectively in condition of the globally competitive air transport industry. In this sense, the government proposed to devide "Aviation Act" into ``Air Transport Business Act``, ``Aviation Safety Act``, ``Airport Facility Act`` in a timely manner. At first I am to take a look about the laws of traffic-related legislation and national laws of Japanese aviation system, and to evaluate implications. In addition, the background, the organization and the main information of the Act (Draft) will be introduced. And I would like to discuss the issues raised and suggest an alternative. In particular, the name of the Act (Draft), the specifying of airport manager· operater, accounting method of airport development projects belong to the nation, the delegation of the authority and other issues are discussed to provide a starting point. In conclusion, the division of current "Aviation Act" is considered absolutely necessary. To stimulate fair competition, safety regulations and efficiency, the legislation process would be desirable in the direction of the total development of the aviation industry as well as ensuring aviation safety.