배전계통의 최적 회로재구성을 위한 전문가 시스템

윤용한(Yong-Han Yoon),김재철(Jae-Chul Kim),장정태(Jeong-Tae Jang) 대한전기학회 1991 대한전기학회 학술대회 논문집 Vol.1991 No.11

일본의 건축물 녹화 관련제도 연구

윤용한 ( Yong Han Yoon ),주진희 ( Jin Hee Ju ),김원태 ( Won Tae Kim ) 한국환경과학회 2010 한국환경과학회지 Vol.19 No.12

In recently, building greening to improve the urban environment is a very important areas. Thus, in order to promote the building greening is needed for the arrangement of its related system. In this study, analyzed the related system in Japan and the results obtained are as follows. Related system in Japan are to promote the spread of compulsory and dissemination of guidance. And to promote the spread of dissemination of guidance are to allowed a system to be included in green area of the site required, plans to loan the costs of greening, plans to subsidize the cost of greening, tax reduction and exemption, incentive on floor area ratio, plant supply and other technical guidance system. In conclusion, in order to promote the building greening note the related system of Japan and our related system should be arranged.

식재용토 재활용을 위한 건설폐토석의 개량방안 연구

윤용한 ( Yong Han Yoon ),김원태 ( Won Tae Kim ),박봉주 ( Bong Ju Park ),김현정 ( Hyun Jung Kim ) 한국녹지환경디자인학회 2007 녹지환경학회지 Vol.3 No.1

The present study examined how to improve soil from construction sites in order to reuse waste soil from construction sites, which is piled up at waste processing companies around the Sudokwon Landfill Site, as soil for planting. We selected calcium superphosphate and peat moss to resolve constraints in reusing waste soil for planting, and mixed 10.4kg of calcium superphosphate and 15L of peat moss with 1m3 of soil from construction sites. As a result, we could lower the acidity of the soil down to pH 6.5, the target of improvement of effective soil layer. We also increased organic matter contents but only up to around a fourth of 30g·kg-1, the target of improvement of organic matter contents. According to the results of herbaceous plant growth experiments using soil before and after improvement and mountain soil as a control, all seeds in mountain soil germinated within 7 days from sowing, but seeds in waste soil from construction site before and after improvement germinated 70% and 90%, respectively, on day 30 from sowing. In addition, compared to mountain soil, improved waste soil from construction site showed a difference of over 14 days in germination time. By sample soil, plant height on day 30 was 162mm in mountain soil, and next 15.0mm in improved soil, and 13.1mm in unimproved soil. Undried weight measured after the growth experiment was 6.811g per individual in mountain soil, and next 5.955g in improved soil and 5.616g in unimproved soil. The results show that the studied sample soil from construction sites can be reused as soil for planting through improvement. In addition, by accumulating research data like our results, we expect to supply soil demanded for the top soil layer of Sudokwon Landfill Site and the post-management of landfill sites and to solve environmental problems such as fly dust and spoiled landscape by abandoned heaps of waste soil from construction sites.

진공단열패널 열교부위 평가를 위한 수치해석적 연구

윤용한(Yong Han Yoon),소범식(Bum Sik So),조정호(Jung Ho Cho),엄영철(Young Chul Eom),심재술(Jaesool Shim) 대한기계학회 2019 大韓機械學會論文集B Vol.43 No.7

본 연구에서는 두 개의 외장패널이 맞닿는 부분에 형상을 가진 기계적 체결이 가능한 진공단열 외장패널의 3가지 CASE 열전달 해석을 수행하였다. 체결부의 열교부위 선형 열관류율 값을 계산하였으며, 열교를 비교함으로써 단열측면에서 우위의 설계안을 도출하였다. 열전달해석 분석결과, 열교부위의 길이가 0.039m, 0.083m, 0.1656m으로 약 2배씩 선형적으로 증가 했을 때, 열교부위의 선형 열관류율 값은 각각 0.0476W/m·K, 0.2113W/m·K, 0.2663W/m·K으로 열교부위 길이에 비례하여 선형적으로 증가하지 않음을 확인하였다. 2차원 열전달해석을 통해 얻은 데이터를 ISO 10211 기준에서 제시하는 계산식에 대입하여 선형 열관류율 값을 산출하였다. 3가지 CASE의 체결부 열교부위 선형 열관류율 값을 계산하여 비교한 결과, CASE 1 패널이 선형 열관류율 값이 가장 작아 열교 측면에서 가장 우수한 설계임을 확인하였다. In this study, a heat transfer simulation of three types of vacuum insulation panels that can be mechanically fastened with two external panels was conducted. The linear thermal transmittance of the thermal bridge was calculated and the design of superiority in terms of insulation was derived. Results of heat transfer analysis indicated that when the length of the thermal bridge was linearly increased by two times to 0.039, 0.083, and 0.1656 m, the linear thermal transmittance of the thermal bridge was 0.0476, 0.2113, and 0.2663 W/m·K, respectively. In addition, the linear thermal transmittance did not increase linearly in proportion to the length. The linear thermal transmittance was calculated by substituting the data obtained from the two-dimensional heat transfer analysis into the formula given in the ISO 10211 standard. A comparison of the values of the linear thermal transmittance of the joints of the three cases verified that Case 1 had the best thermal bridge design because it exhibited the smallest linear thermal transmittance.

가을철 교통조건에 따른 가로공간 열확산 분포 영향

윤용한 ( Yong-han Yoon ),김정호 ( Jeong-ho Kim ) 한국환경과학회 2017 한국환경과학회지 Vol.26 No.4

This study sought to determine the changes in weather conditions in urban streets, along with conditions of traffic and roads in urban areas. The variations in weather conditions depending on traffic differed according to distance. First, the temperature difference measured by traffic results is as follows: T1 point 1.03℃, T2 point 1.04℃, T3 point 0.9℃, T4 point 1.01℃, and T5 point 0.31℃. The average difference between the measured temperatures by the point of measurement was 0.86℃. The changes in wind velocity according to traffic volume results of the measurements is T1 point 1.32 m/s, T2 point 0.80 m/s, T3 point 0.29 m/s, T4 point 0.04 m/s, and T5 point 0.09 m/s. The difference between the average wind speeds was 0.51 m/s and traffic jams caused substantial differences in distance. The relative humidity tended to be inversely proportional to temperature. The measurements results ares T1 point 2.29%, T2 point 2.67%, T3 point 2.47%, T4 point 2.16%, and T5 point 0.91% The difference between the average relative humidity was 7.3%. In case of independent sampling T test according to traffic volume, changes in wind velocity and temperature were directly proportional to the level of statistical significance(p<0.01). On the other hand, relative humidity tended to be inversely proportional; however, there was no statistical significance.

신경 회로망을 이용한 비례-적분 전력계통 안정화장치의 구현

윤용한(Yong-Han Yoon),공성곤(Seong-Gon Kong),김재철(Jae-Chul Kim) 제어로봇시스템학회 1994 제어로봇시스템학회 국내학술대회 논문집 Vol.1 No.1

녹지의 배치와 식재형태가 열환경저감효과에 미치는 영향

윤용한(Yong-Han Yoon) 한국잡초학회·한국잔디학회 2003 Weed & Turfgrass Science Vol.17 No.4

본 연구는 녹지의 배치와 식재형태가 기온저감효과에 미치는 영향을 파악한 결과 다음과 같은 점이 밝혀졌다. <br/> 1) 녹지의 기온분포도로부터 고온역은 주변시 가지에서, 저온역은 각 녹지내의 식재지주변과 소하천주변에서 확인되었다.<br/> 2) 녹지의 배치와 기온과의 관계를 보면, 저온역은 각 녹지와 거의 일치하고 녹지간 시가지 및 풍하쪽에도 저온역이 형성되었다. <br/> 3) 녹지간 시가지와 기온과의 관계를 보면 저온역은 풍하쪽 시가지뿐 아니라 녹지간 시가지에서도 나타났다. 또한, 풍상쪽에 녹지가 존재하지 않은 경우에도 녹지간 시가지는 주변시가지보다 낮은 기온이었다. <br/> 4) 토지피복비율과 기온에서 식재지, 초지 및 수면이 증가하면 모두 기온저감에 효과적이고, 나지의 증가는 기온상승에 효과적이다.<br/> 5) 교목, 소교목의 순으로 그 그루의 증가는 기온저감에 유효하게 관련되어 있는 것이 파악되었다. Temperature lowering effects varied by the arrangement and types of vegetation The effects of the arrangement and types of vegetation on lowering temperature have shown following results.<br/> 1) The temperature range of a vegetation shows that a higher temperature was recorded near urban towns while lower temperature was observed around the vegetation area and small streams.<br/> 2) The relationship between the arrangement of a vegetation and the temperature indicates that the lower temperature area matches with each vegetation area. Streets between vegetations and the lower end of the wind area have also lower temperature.<br/> 3) The relationship between inter-vegetationstreets and the temperature indicates that the lower temperature area has been observed not only at the streets of the lower end of the wind but at the streets in-between streets as well. Even when there's no vegetation area from which the wind blows, inter-vegetation streets showed the lower temperature.<br/> 4) With land coverage ratio and the temperature, the increase of planted areas, grass areas, and water level have positive effects on lowering the temperature while bare areas increase it.<br/> 5) From arbor to sub-arbor, the increase of trees has a significant effect on lowering the temperature of nearby area.<br/>

녹지의 규모와 기온저감효과와의 관련성에 관한 연구

윤용한(Yong Han Yoon),배병호(Byung Ho Bae) 한국환경생물학회 2002 환경생물 : 환경생물학회지 Vol.20 No.1

N/A In order to investigate relation between park scale and temperature decrease in and near parks, temperature distribution was observed and was analyzed in four parks of different scales. Relation between the temperature decrease and ratio of green coverage was also analyzed by using regression analysis. Lower temperature was observed in and near the parks and larger cooling effect was implicated near the larger parks. The result of regression analysis showed that the increase of green coverage ratio leads the decrease of the temperature in the parks. The degree of the temperature decrease varied according to the types of the coverage.

한국형 스프링식 장력 장치의 개발 및 평가

윤용한(Yoon Yong-Han),임금광(Yim Geum-Kwang) 한국철도학회 2005 한국철도학회 학술발표대회논문집 Vol.- No.-

This paper presents a development and evaluation of a spring type tensioning device for Korea railroad. The wheel type tensioning device used in the Korea railroad requires much time and labor for maintenance including wire replacement and oil application. So, we found it necessary to develop a new type of maintenance-free tensioning device. In this paper, we introduced a spring type tensioning device for Korea railroad.

건설발생토의 식재용토 재활용을 위한 적합성 평가

윤용한(Yong-Han Yoon),김원태(Won-Tae Kim),박봉주(Bong-Ju Park),김선주(Sun-Ju Kim),임병옥(Byeong-Ok Im),손진관(Jin-Kwan Son) 한국잡초학회·한국잔디학회 2006 Weed & Turfgrass Science Vol.20 No.1

본 연구는 수도권매립지 주변 건설폐기물 중간처리업체 내에 적재되어 있는 건설발생토의 유해물질 함량과 토양오염도를 측정하여 환경식재기반으로서의 활용 가능성에 대해서 검토하였다. 본 연구에 사용된 건설발생토의 유해물질 함량은 분석항목 모두 지정폐기물에 함유된 유해물질의 기준치 이내로 나타나 환경식재기반으로서의 재활용 가능성이 높은 것으로 나타났다. 토양오염도도 분석항목 모두 토양오염 우려기준을 초과하지 않는 것으로 나타났다. 잔디생육실험에 있어서도 건설 발생토는 식생토사로서의 활용 가능성이 있는 것으로 나타났다. This study was carried out to evaluate the recycled waste soils from construction site for using vegetation media. The concentrations of Cd, Pb, Cr??, As, Hg, Cu, Cn, organic P, TCE, and PCE were measured at recycled soil piles of an industrial waste treating company in the Metropolitan landfill area. The concentrations of polluted materials did not exceed to the standard critical levels of soil pollution in all analyzed items. The results suggested a high potential of recycling of the wastes soils for vegetation soil media. However, Cd and Cr?? almost reached the critical levels by the time of sampling, and it is necessary to develop a skill to lower concentrations of those pollutants. In the turfgrass test, the recycled soil did show an encouraging result as vegetation media in the early growth stage of perennial ryegrass.