• 한국환경복원기술학회지
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• 제7권1호
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• pp.1-9
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• 2004

Caused on the excessive heat accumulation of concrete material, the indoor thermal environment of reinforced concrete building is so bad in Okinawa. As the interruption of solar radiation could be one of the methods to improve it, the purpose of this study is to find out the effect of adopting solar radiation interrupting materials -Solar insulating block, Grass, and both of them- for the improvement of thermal environment. As the result, it was found that grass on the solar insulating block which has an air layer obviously improved the indoor thermal environment of RC building which was applied to. And it was found that the systems have an effectuality on heat island phenomenon simultaneously. It could be proposed as a good system which improve the indoor thermal environment of the existent houses.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2005년도 학술발표논문집
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• pp.569-573
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• 2005

Land surface temperature(LST) is one of the key parameters in physics and meteorology of land-surface processes on regional and global scales. Urban Heat Island(UHI), a meteorological phenomenon by which the air temperature in an urban area increases beyond that in the suburbs, grows with the progress of urbanization. Satellite remote sensing has been expected to be effective for obtaining thermal information of the earth's surface with a high resolution. The main purpose of this study is to produce LST map of Cheongju and to analyze the spatial distributions of surface heat fluxes in urban areas. This study, taking Cheongju as the study area, aims to examine relationship between vegetation cover rates and surface temperature, and to clarify a method for calculation surface temperature with Landsat TM thermal images.

• 한국태양에너지학회 논문집
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• 제27권2호
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• pp.95-101
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• 2007

The surface changes due to urban expansion and the increase of artificial heat releases have brought significant climate changes such as heat island phenomenon in urban area. Furthermore, these changes also have brought serious problems such as air temperature increase, wind changes, and air pollution in urban area. Comprehensive analytical technologies considering various effects are required to analyse complicated mechanism of climate changes, and review the efficient measures. In this research, the effect of the urban expansion in Tokyo and Bangkok area on urban environment will be discussed. By using CFD, urban development and the mechanism of global warming and wind change are studied in those two cities. As a result of numerical research, the surface changes of city could bring the environmental changes in urban area.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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• pp.186-187
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• 2019

In modern times, due to the centralized urban structure, the interval between buildings is narrow and the increase of the heat island phenomenon due to the accumulation of the structure is becoming a social problem. In order to solve these problems, various materials for reducing the surface temperature of buildings are under study. Particularly, in the case of a wall part which is a part directly affected by the outside air of the building, it is a main structural part for determining the room temperature. The purpose of this study was to develop a material that can improve the thermal environment performance of the building by evaluating the temperature control performance of the exterior finishing material using the heat reflecting material as a method for controlling the temperature of the outer wall finishing material.

• 한국지리정보학회지
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• 제15권4호
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• pp.65-77
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• 2012

본 연구에서는 부산의 지난 25년간 장기적 토지피복변화를 조사하고, 이어서 지표면 온도와 기온자료를 이용해서 열섬포텐셜을 평가하였다. 그 결과는 다음과 같다. 1975년부터 2000년까지 지난 25년 동안 부산의 도시면적은 2.5배 이상 증가하였다. 이처럼 단기간에 도시의 포장면적이 빠르게 증가한 것은 다른 나라에서는 유례를 찾아보기 어려운 우리나라 독특한 현상으로 판단된다. 이러한 과정을 통해서 도시열섬현상이 심화되었을 것이라는 것을 추정할 수 있었다. 지표면 피복에 따른 지표면 온도를 분석한 결과 도시화 지역과 산림지역의 온도가 현저히 차이가 나타났다. 특히 여름철에는 공단지역에서 $36{\sim}39^{\circ}C$로 높게 나타났으며, 반면 도시의 중심에 산지가 위치한 지역에서는 $22{\sim}24^{\circ}C$로 낮은 지표면 온도를 나타내었다. 토지피복도에 따른 열섬포텐셜은 지표면 피복 상태에 따라서 그 값이 달라짐을 알 수 있었다. 도시화지역 중 공업지역의 열섬포텐셜은 $6{\sim}8^{\circ}C$, 주거지역과 상업지역은 $0{\sim}5^{\circ}C$로 도시열섬을 유발할 가능성이 높음을 확인할 수 있었다. 반면 산림지역이나 농업지역 수변지역 열섬포텐셜 값은 $-6{\sim}-3^{\circ}C$로 나타났다. 본 연구결과를 통해 도시의 토지이용에 따른 기온상승효과를 평가하여 도시의 열환경 개선 및 환경친화적 도시개발 계획에 기초자료로 활용될 수 있을 것이다.

• 한국항해항만학회지
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• 제33권3호
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• pp.241-245
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• 2009

도심지의 열섬(Heat Island)현상과 연안지역의 해풍(海風)의 영향 때문에, 부산, 인천, 목포 등 연안도시의 도심지역과 연안지역의 각 외기 상태가 서로 다르게 나타난다. 이러한 외기조건은 건물의 냉방부하, 난방부하, 전력소비량 등에 직접적인 영향을 미치기 때문에, 에너지절약을 위한 건물설계와 운전방법개발을 위해서는 각 지역에 위치한 건물의 에너지소비특성을 파악해야만 한다. 본 연구에서는 연안지역 아파트의 전력소비량에 주목하였고, 부산광역시 영도구에 위치한 세대수가 100세대 이상인 22개 아파트 단지를 대상으로 기간별, 기능별 전력소비량을 조사하였다. 22개 아파트 전체의 세대내 최대전력소비량은 8월에 발생하고 있으나, 공용 최대전력소비량은 1월에 발생하고 있음을 알수 있었다. 한편 연안지역에서는 여름철에 해풍에 의한 자연환기로 인해 냉방용 전력소비가 감소할 것으로 예상하였으나, 조사결과에서는 여름철에 최대부하가 발생하였는데, 이는 해풍에 포함된 염분의 피해를 예방하기 위해 창문을 닫고 전기구동 에어컨으로 냉방하기 때문인 것으로 파악되었다.

• 한국태양에너지학회 논문집
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• 제30권3호
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• pp.71-80
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• 2010

This study carried out to understand the thermal characteristics of various surface material which compose the city through the observation in the summer. To examine passive cooling effect of planting of building, it is arranged four different materials that is natural grass, grass block, concrete slab and artificial grass. The results of this study are as follows; (1) Natural grass and grass block show the lower surface temperature because of the structures of leaf can do more thermal dissipation effectively. (2) There is little surface temperature between artificial grass and concrete. But there is little high surface temperature difference between natural grass and concrete because of latent heat effect. (3) The concrete can play a role of the tropical nights phenomenon as high heat capacity of concrete compare with other materials. (4) It is nearly same color in artificial grass and natural grass but there is large difference between natural grass and artificial grass at albedo. There is different albedo in near infrared ray range. (5) A short wave radiation gives more effect at the globe temperature than long wave radiation. (6) The artificial turf protected the slab surface temperature increase in spite of thin and low albedo materials.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2010년도 학술발표회
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• pp.91-100
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• 2010

To investigate the thermal properties of a water-retentive artificial turf system (W-ATS), we estimated hydrologic parameters including thermal conductivity, heat capacity, and surface albedo for both the W-ATS and natural grass. We used a model experiment to measure surface temperature and evaporation for both the W-ATS and natural grass. We found that the W-ATS had lower thermal conductivity than natural grass did, and it was difficult for the W-ATS to convey radiant heat to the ground. Compared to natural grass, the W-ATS also had lower heat capacity, which contributed to its larger variation in surface temperature: the W-ATS had higher surface temperatures during daytime and lower surface temperatures during nighttime. The albedo of the W-ATS was one-quarter that of natural grass, and reflected shortwave radiation from the W-ATS surface was lower than that from the surface of natural grass. These results indicate that the W-ATS caused the soil temperature to increase. Furthermore, evaporation from the W-ATS was one-quarter the value of evapotranspiration from natural grass.

• 한국콘텐츠학회논문지
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• 제19권12호
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• pp.84-92
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• 2019

기후변화로 인한 도시열환경 악화, 온열질환자 발생은 중요한 사회 문제 중 하나로 대두되었다. 이에 폭염 등의 기후변화에 관한 연구가 활발해졌으나 주로 기후요소에 집중되고 있다. 그러나 도시열섬현상은 여름철 폭염을 가속화시키며, 도시지역에서의 온열질환자가 급증하는 추세로 미루어 도시의 환경의 영향을 짐작할 수 있다. 이에 본 연구는 서울시와 경기도를 대상으로 도시지역의 물리적·사회적 특성이 온열질환자에 미치는 영향을 분석하였다. 분석을 위해 본 연구에서는 음이항회귀분석을 활용하였다. 분석 결과, 토지이용현황 중 주요열에너지방출원인 주거·상업·공업시설 연면적의 비율은 통계적으로 유의하지 않은 것으로 나타났지만, 도로면적과 녹지면적은 각각 양과 음의 영향을 미치는 것으로 나타났다. 사회적 특성 변수에 포함된 인구밀도와 65세 이상 인구 비율, 독거노인 비율, 기초생활수급자 비율은 모두 유의한 것으로 나타났는데, 독거노인 비율과 인구밀도 비율만 음의 영향을 미치는 것으로 나타났다. 연구의 결과는 지역별 온열질환자와 관련한 도시 정책적 대안을 마련하는데 활용할 수 있다.

• 한국조경학회지
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• 제30권3호
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• pp.25-34
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• 2002

The purpose of this paper is to discuss the function of microclimate amelioration of urban trees regarding the environmental benefits of street trees in summer, focusing on the heat pollution-urban heat island, tropical climate day's phenomenon and air pollution. We measured the diurnal variation of air/ground temperatures and humidity within the vegetation canopy with the meteorological tower observation system. Summertime air temperatures within the vegetation canopy layer were 1-2$^{\circ}C$ cooler than in places with no vegetation. Due to lack of evaporation, the ground surface temperatures of footpaths were, at a midafternoon maximum, 8$^{\circ}C$ hotter than those under trees. This means that heat flows from a place with no vegetation to a vegetation canopy layer during the daytime. The heat is consumed as a evaporation latent heat. These results suggest that the extension of vegetation canopy bring about a more pleasant urban climate. Diurnal variation of air/ground temperatures and humidity within the vegetation canopy were measured with the meteorological tower observation system. According to the findings, summertime air temperatures under a vegetation canopy layer were 1-2$^{\circ}C$ cooler than places with no vegetation. Due mainly to lack of evaporation the ground surface temperature of footpaths were up to 8$^{\circ}C$ hotter than under trees during mid-afternoon. This means that heat flows from a place where there is no vegetation to another place where there is a vegetation canopy layer during the daytime. Through the energy redistribution analysis, we ascertain that the major part of solar radiation reaching the vegetation cover is consumed as a evaporation latent heat. This result suggests that the expansion of vegetation cover creates a more pleasant urban climate through the cooling effect in summer. Vegetation plays an important role because of its special properties with energy balance. Depended on their evapotranspiration, vegetation cover and water surfaces diminish the peaks of temperature during the day. The skill to make the best use of the vegetation effect in urban areas is a very important planning device to optimize urban climate. Numerical simulation study to examine the vegetation effects on urban climate will be published in our next research paper.