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쾌적한 도시환경을 위한 여름철 도시생태 특성별 음이온 분포 및 상관성 분석
윤용한(Yoon, Young-Han),오득균(Oh, Deuk-Kun),김정호(Kim, Jeong-Ho) 한국도시설계학회 2012 도시설계 : 한국도시설계학회지 Vol.13 No.1
쾌적한 도시환경의 지표로 음이온을 설정한 본 연구는 대도시의 도시생태특성 즉 비오톱 유형별 음이온의 분포실태와 도시생태인자 및 음이온과의 상관성을 분석함으로서 쾌적한 도시관리 및 계획의 기초자료를 제공하고자 하였다. 연구대상지는 대도시인 서울시의 도시생태적 특성과 유사한 강동구를 설정하였는바, 비오톱 유형별 녹지율은 산림, 하천, 고층주거지, 학교 및 공공기관, 경작지, 도로, 저층주거, 상업업무지의 순으로 높았다. 기상요소와 음이온의 해석결과를 요약하면, 첫째, 외기온도는 상업업무지 비오톱>도로 비오톱>경작지 비오톱>고층주거지 비오톱>하천 비오톱>학교 및 공공기관 비오톱>저층주거지 비오톱>산림 비오톱의 순이었으며 습도의 경우 반대경향을 보이고 있었다. 둘째, 비오톱 유형별 음이온 발생량은 산림 비오톱>하천 비오톱>고층주거지 비오톱>경작지 비오톱>상업업무지 비오톱>저층주거지 비오톱>학교 및 공공기관 비오톱>도로 비오톱의 순으로 많았다. 요약하면, 음이온발생량과 도시생태인자와 상관성 분석에서는 녹지율이 높을수록, 건폐율과 비건폐 포장율이 낮을수록 음이온발생량이 많은 것으로 분석되었으며 기상요인과는 유의성이 없었다. 이상의 연구를 통해 도시지역 내 기상 측면보다는 녹지율과 불투수포장율 등의 도시생태적 특성이 음이온 발생에 매우 중요한 요인임을 알 수 있다. This paper provides the fundamental data of urban management and planning, along with city healthy index, set by the anion. It analyzes the actual distribution of anion in biotope types. The research case area had set in Gangdong-gu District of Seoul. The significant investigation and interpretation results are as follows. First, the order of high temperature in outside air ranks as the commercial business area > the road > the arable land > the high-rise dwelling area > the rivers > the school and the government offices > the low-rise dwelling area > The forest. The order of humidity, however, ranks in exactly opposite way. Second, the order of anion occurrence quantity ranks forest > rivers > high-rise dwelling area > arable land > commercial business area > low-rise dwelling area > school and the government offices > road respectively. In conclusion, the higher of the ratio of greens, as well as the lower of the building area ratio and of the non-penetrative pavement ratio appeared, the higher of the anion generation was observed. As a result, in terms of anion occurrence, ecological characteristics, such as the ratio of greens and of non-penetrative pavements, are more important than are the weather conditions.
학교 운동장과 녹지공간의 UTCI, PMV, WBGT 비교 분석
윤용한 ( Young Han Yoon ),박승환 ( Seung Hwan Park ),김원태 ( Won Tae Kim ),김정호 ( Jeong Ho Kim ) 한국환경생태학회 2014 한국환경생태학회지 Vol.28 No.1
본 연구는 학교의 옥외공간 중 학생들의 휴식 및 활동량이 가장 많고, 높은 열과 낮은 열을 가지는 운동장 및 녹지공간을 대상으로 열적 쾌적성 지표 중 UTCI, PMV, WBGT를 이용하여 학생들이 느끼는 열적 쾌적성을 비교 · 분석하고자 하였다. 연구대상지는 인천광역시 학교시설(3개교)을 대상으로 하였으며, 조사기간은 2013년 7 ~ 8월까지 실시하였다. 측정항목으로 열적 쾌적성 지표의 경우 UTCI, PMV, WBGT를, 녹지구조는 녹피율과 녹지용적계수를 측정하였다. 학교별 녹지용적계수는 A학교(4.71㎥/㎡) > B학교(3.34㎥/㎡) > C학교(0.38㎥/㎡)의 순이었으며 학교별 열적 쾌적성 지표를 살펴보면, UTCI는 녹지공간 32.30~35.68℃, 운동장 40.66~42.94℃, PMV수치는 녹지공간 1.76~2.66이었으며 운동장은 모두 3으로 나타났다. WBGT는 녹지공간 26.15~31.38℃, 운동장 31.67~34.53℃이었다. 3개 지표 모두 녹지공간 대비 운동장에서 매우 불쾌적한 수준이었다. 열적 쾌적성 및 녹지와의 상관분석결과, 열적 쾌적성 지표인 UTCI, PMV, WBGT 모두 일사, 흑구온도와는 정의 상관관계를, 녹피율 및 녹지용적계수와는 부의 상관관계로 나타났다. This study of the school`s outdoor space for relaxing and activity of the two most numerous students, high heat and low heat with a green space, playground targets of thermal comfort indicators UTCI, PMV, WBGT using the thermal comfort students feeling compare the analyzed. The destination of this study, school facilities of Nam-gu, Namdong- gu, Incheon were studied and the investigation period was conducted from July to August. List of measurement, in the case of thermal comfort indicators, UTCI, PMV, WBGT was measured in the case of green, ratio of green coverage and GVZ was measured. GVZ analysis were as follows: A school (4.71 ㎥/㎡) B school (3.34㎥/㎡) C school (0.38㎥/㎡). Comparative analysis of the results of thermal comfort indicators by schools, UTCI was Green space 26.15~31.38℃ and playground 40.66~42.94℃, PMV values were 1.76 to 2.66 as a green space. WBGT was Green space 26.15~31.38℃, playground 31.67~34.53℃. Comparative analysis of the results of thermal comfort indicators UTCI, PMV, WBGT all A school, B school, C school, on the green space was comfortable levels more than playground. The results of the school type thermal comfort and green correlation analysis of thermal comfort UTCI, PMV, WBGT all solar radiation, globe temperature, and a positive correlation shown solar radiation, globe temperature is not comfortable, the higher was considered. UTCI, PMV, WBGT of thermal comfort indicator all ratio of green coverage, GVZ and negative correlation appears ratio of green coverage, GVZ was increased due to the lowering of the value of thermal comfort indicators was considered to be comfortable.
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.
계곡·사면부의 식생유형에 따른 공기이온 평가 - 충주시 탄금대 공원을 대상으로 -
윤용한,이상훈,김정호,Yoon, Young-Han,Lee, Sang-Hoon,Kim, Jeong-Ho 한국환경과학회 2020 한국환경과학회지 Vol.29 No.5
The purpose of this study was to provide basic health care data for the climate aspects of park re-cultivation by evaluating air ions according to the type of vegetation in the valley and upper slopes of the mountain park. Simple negative or positive air ions were expected to show the same tendencies, so they were analyzed in terms of correcting the air ion index. By analyzing the air ions according to the topography, it was found that valley > slope in terms of the air ion index. When analyzing air ions according to tree species, we found that evergreen conifers in the valley > the deciduous broad-leaved trees in the valley > the evergreen conifers in the slope = the deciduous broad-leaved trees in the slope. For DBH(Diameter at breast height), the valley large pole > slope large pole > slope medium hard wood, while crown density was analyzed as valley dense > slope dense> valley proper > slope proper. Layered structure analysis showed that the multi-layer structure of the valley > multi-layer structure of the slope = the single-layer structure of the valley > the single-layer structure of the slope. The correlation coefficient was determined according to vegetation type and air ion index in the order of DBH > crown density > layer structure > geomorphic structure. In this study, limits exist except for ridge line, valley, and slopes in urban mountain parks. Therefore, analysis should be made considering both topographical structure and various vegetation types in future studies of air ions.