• Proceedings of the Korean Fiber Society Conference
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• 2003.04a
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• pp.398-399
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• 2003

의복 쾌적감은 착용자가 환경변화에 대하여 쾌적한 감정을 갖는 것을 의미한다. 직물의 쾌적성은 접촉감 뿐만 아니라 공기, 열, 수분을 전달하는 직물의 물리적 특성과 관계가 있는데 특별히 직물의 표면특성과 관련하여 변화하는 쾌적인자는 온냉감과 열, 수분 및 공기전달성이다. 따라서 직물의 표면 형태 및 두께에 따라 열, 수분 및 공기전달 특성은 달라질 뿐만 아니라 인체에 접촉하였을 때 접촉면적이 달라지므로 촉감에 큰 영향을 미친다. 본 연구에서는 의복의 쾌적성 향상의 중요한 인자로 대표적인 직물의 역학 특성과 열 및 수분전달특성을 직물 구성사의 단면형상을 달리하였을 때의 그 상관 관계에 대하여 알아보았다. (중략)

• Journal of the Korean Association of Geographic Information Studies
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• v.27 no.2
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• pp.61-77
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• 2024

The purpose of this study was to develop a method for rapidly diagnosing urban thermal comfort using Unmanned Aerial Vehicle (UAV) based data. The research was conducted at Changwon National University's College of Engineering site and Yongji Park, both located in Changwon, Gyeongsangnam-do. Baseline data were collected using field measurements and UAVs. Specifically, the study calculated field measurement-based thermal comfort indices PET and UTCI, and used UAVs to create and analyze vegetation index (NDVI), sky view factor (SVF), and land surface temperature (LST) images. The results showed that UAV-predicted PET and UTCI had high correlations of 0.662 and 0.721, respectively, within a 1% significance level. The explanatory power of the prediction model was 43.8% for PET and 52.6% for UTCI, with RMSE values of 6.32℃ for PET and 3.16℃ for UTCI, indicating that UTCI is more suitable for UAV-based thermal comfort evaluation. The developed method offers significant time-saving advantages over traditional approaches and can be utilized for real-time urban thermal comfort assessment and mitigation planning

• Journal of the Korean Association of Geographic Information Studies
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• v.25 no.1
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• pp.28-43
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• 2022

This study classified UAV image-based physical spatial types for parks in urban areas of Changwon City and analyzed thermal comfort characteristics according to physical spatial types by comparing them with ENVI-met thermal comfort results. Physical spatial types were classified into four types according to UAV-based NDVI and SVF characteristics. As a result of ENVI-met thermal comfort, the T_MRT difference between the tree-dense area and other areas was up to 30℃ or more, and it was 19. 6℃ at 16:00, which was the largest during the afternoon. As a result of analyzing UAV-based physical spatial types and thermal comfort characteristics by time period, it was confirmed that the physical spatial types with high NDVI and high SVF showed a similar to thermal comfort change patterns by time when using UAV, and the physical spatial types with dense trees and artificial structures showed a low correlation to thermal comfort change patterns by time when using UAV. In conclusion, the possibility of identifying the distribution of thermal comfort based on UAV images was confirmed for the spatial type consisting of open and vegetation, and the area adjacent to the trees was found to be more thermally pleasant than the open area. Therefore, in the urban planning stage, it is necessary to create an open space in consideration of natural covering materials such as grass and trees, and when using artificial covering materials, it is judged that spatial planning should be done considering the proximity to trees and buildings. In the future, it is judged that it will be possible to quickly and accurately identify urban climate phenomena and establish urban planning considering thermal comfort through ground LIDAR and In-situ measurement-based UAV image correction.

• Textile Coloration and Finishing
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• v.11 no.1
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• pp.42-47
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• 1999

본 연구는 노멕스 직물과 일반 방염직물의 쾌적성에 영향을 주는 중요한 인자를 찾기 위하여 직물의 열적 성질과 역학 성질에 관하여 연구한 것이다. 사용된 직물은 재해를 일으킬 수 있는 환경에서 방호용 의복으로 사용되는 노멕스 직물이 주를 이루며, 비교를 위하여 방염직물과 쾌적성이 좋은 일반직물을 포함시켰다. 직물의 물리적 성질과 열 특성을 측정하였으며, 역학 성질을 측정하여 노멕스 직물과 다른 직물을 서로 비교 분석하였다. 노멕스 직물은 파이버 자체가 뻣뻣하기 때문에 쾌적성을 향상시키기 위해서는 소프트감을 높이는 것이 중요한 요소라는 것을 확인할 수 있었다. 같은 노멕스 직물이라도 쾌적성 면에서 서로 차이를 보여주므로 직물의 구조적 성질이 직물을 구성하고 있는 파이버 성질보다 쾌적성에 더 영향을 미치는 것을 알 수 있었다.

• Proceedings of the KSME Conference
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• 2008.11a
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• pp.1142-1143
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• 2008

도시철도의 환승체게 개선과 차량의 이용편이성 향상 및 고유가 등으로 도시철도 이용객수는 해마다 증가하고 있다. 이렇게 많은 승객이 이용하는 차량실내는 미세먼지, co2등의 오염물질이 증가하여 이용승객의 건강을 해치고 있는 실정이다. 이를 해결하기 위해 새롭게 개발되는 차세대전동차에 수치해석 기법을 적용하여 설계단계에서 덕트 및 실내기기배치 등을 모델링하여 열유동 및 쾌적성을 해석하여 국제기준과 비교하여 그 기준을 만족하는 차량임을 확인하였다.

• Proceedings of the KSR Conference
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• 2000.11a
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• pp.183-189
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• 2000

시트 커버 직물은 철도차량 내부 인테리어와 실내를 구성하며, 시각적으로 커버 직물의 디자인 요소 중 패턴과 쾌적한 커버지가 철도차량에 대한 전체적인 이미지를 형성하게 된다. 본 연구는 한국인의 감성에 따른 시트 패던 디자인과 쾌적한 시트 커버 직물의 요건을 제시하고자 한다. 디자인 분석체계는 패턴 디자인의 최소단위를 Pattern Primitive(PP), 최소 반복 단위를 Repealed Pattern Unit(RPU)로 개념화하여 분류하여 파악한다. 또한 쾌적하고 안락한 시트를 위해서 착석 상태에서의 열수분 전달특성과 직물의 발수도, 일광견뢰도, 마찰견뢰도, Q-max, 공기투과도, 마찰대전압 등 물리적 특성을 비교한다.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2001.05a
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• pp.237-242
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• 2001

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.35 no.10
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• pp.34-45
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• 2006

• Journal of the Korean Institute of Landscape Architecture
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• v.50 no.6
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• pp.30-41
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• 2022

This study investigates the heat mitigation effects and thermal comfort improvement due to urban parks during summer. Self-developed monitoring devices to measure long-term microclimate data were installed in three spots, including the park plaza, waterside, and roadside in Seoul Forest Park, and measurements were taken from July 9 to July 30. The results of the measurement are as follows. The daily temperature of the park plaza and waterside were found to be 2.7℃ and 2.9℃ lower than the roadside and 5.5℃ and 7.4℃ lower than the roadside from 10:00 to 16:00. In addition, the Universal Thermal Climate Index (UTCI) measurement was applied to measure the thermal comfort at each point. In the average daily analysis, a significant difference was found between the park plaza, the waterside, and the roadside, and a greater difference was found between 10:00 to 16:00. Also, although there was no significant difference due to the weather condition, a statistically significant difference was also found in the average PM₁₀ and CO₂ concentrations. It is found to be higher in the order from the roadside, park plaza, and waterside for PM₁₀ concentration and park plaza, roadside, and waterside for CO₂. In sum, although the difference in measured microclimate data and thermal comfort index results were different depending on the time and weather conditions at the three points, the park plaza and waterside, which are located inside the park, showed improved thermal comfort conditions and lower temperatures than the roadside outside the park.

• Journal of the Korean housing association
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• v.24 no.1
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• pp.51-59
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• 2013

This study aims to improve the thermal comfort level of detached housing area by reducing the impact of thermal environment. The study focused on reducing surface temperature that is generated in buildings and adjacent spaces as a result of sensible heat load and presented a proposal on implementing planting method considering its outdoor condition and structure and composed materials. To perform the study, we utilized 3D-CAD to examine the outdoor condition and structure and composed materials that impact on surface temperature and conducted space design after reflecting climatic elements in simulations. The result is as follows. In reviewing temperature distribution of Heat Island Potential (HIP) of buildings and adjacent spaces, in case where green coverage ratio is increased, there was a $6^{\circ}C$ temperature difference and in regard to changes in the thermal environment in detached housing area, in case where rooftop planting, surface improvement, planting, and overall green coverage ratio is increased, there was a $10^{\circ}C$ temperature difference. In addition, there was difference in temperature in detached housing area following the changes in wind.