• Title/Summary/Keyword: energy space

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Airfoil Testing to Obtain Full-range Aerodynamic Characteristics based on Velocity Field Measurements Utilizing a Digital Wind Tunnel (익형의 전 범위 받음각에서 공력특성 시험이 가능한 디지털 풍동의 개발 및 속도장 측정)

  • Kang, Sangkyun;Kim, Jin-Ok;Kim, Yong-Su;Shin, Won-Sik;Lee, Sang-Il;Lee, Jang-Ho
    • New & Renewable Energy
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    • v.18 no.3
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    • pp.60-71
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    • 2022

  • A wind tunnel provides artificial airflow around a model throughout the test section for investigating aerodynamic loads. It has various applications, which include demonstration of aerodynamic loads in the building, automobile, wind energy, and aircraft industries. However, owing to the high equipment costs and space-requirements of wind tunnels, it is challenging for numerous studies to utilize a wind tunnel. Therefore, a digital wind tunnel can be utilized as an alternative for experimental research because it occupies a significantly smaller space and is easily operable. In this study, we performed airfoil testing based on velocity field measurements utilizing a digital wind tunnel. This wind tunnel can potentially be utilized to test the full-range aerodynamic characteristics of airfoils.

  • https://doi.org/10.7849/ksnre.2022.0009 인용 PDF KSCI

A Study of Energy and Spatial Structure -The Case of Rural-urban Regional Settlement- (에너지와 空間構造에 關한 硏究 -農村 $\cdot$ 都市地域 生 圈의 境遇-)

  • Kim, Kwi-Gon;Kim, Myung-Jin;Sung, Hyun-Chan;Lee, Ho-Jin
    • Journal of Korean Society for Atmospheric Environment
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    • v.4 no.1
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    • pp.45-57
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    • 1988

  • This is a close relationship between energy consumption and the way in which we develop and manage our regions. This study has estimated and compared energy requirements for the journey to work, resulting from alternative population and employment growth patterns in a rural-urban regional settlement of Korea. The broad scope of work was as follows: i) Select the study area ii) Formulate alternative growth patterns iii) Develop the Hansen and double-constrained gravity model iv) Application of Vogel's approximation method and the developed Hansen and gravity model to the case study area. v) Analyze the relationship between spatial structure, transport energy-requirements and environmental pollution. At issue here is the trade-off between air pollution averages and variations. Policies concentrating manufacturing industry and other regional facilities, for instance, may indeed reduce average pollution levels at the benefit of less-car miles, thus, reducing auto pollution, in the region, but increase local pollution peaks.

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Development of Methodology for Automated Office Room Generation Based on Space Utilization (공간 사용률 기반 오피스 실 생성 자동화 방법론 개발)

  • Song, Yoan;Jang, Jae Young;Cha, Seung Hyun
    • Journal of KIBIM
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    • v.14 no.3
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    • pp.1-12
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    • 2024

  • Many efforts are being made to enhance user productivity and promote collaboration while ensuring the economic efficiency of office buildings. Analyzing space utilization, indicating how users utilize spaces, has been a crucial factor in these efforts. Appropriate space utilization enhances building maintenance and space layout design, reducing unnecessary energy waste and under-occupied spaces. Recognizing the importance of space utilization, there have been several studies to predict space utilization using information about users, activities, and spaces. These studies suggested an ontology of the information and implemented automated activity-space mapping as part of space utilization prediction. Despite the existing studies, there remains a gap in integrating space utilization prediction with automated space layout design. As a foundational study to bridge this gap, our study proposes a novel methodology that automatically generates office rooms based on space utilization optimization. This methodology consists of three modules: Activity-space mapping, Space utilization calculation, and Room generation. The first two modules use data on space types and user activity types as input to calculate and optimize space utilization through requirement-based activity-space mapping. After optimizing the space utilization value within an appropriate range, the number and area of each space type are determined. The Room generation module then automatically generates rooms with optimized areas and numbers. The practical application of the developed methodology is demonstrated, highlighting its effectiveness in fabricated case scenario. By automatically generating rooms with optimal space utilization, our methodology shows potential for expanding to automated generation of optimized space layout design based on space utilization.

  • https://doi.org/10.13161/kibim.2024.14.3.001 인용 PDF