• Title/Summary/Keyword: Green Road

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Fundamental Study of Energy Harvesting using Thermoelectric Module on Road Facilities (열전소자를 활용한 도로구조물에서의 에너지 하베스팅 기초 연구)

  • Lee, Jae-Jun;Kim, Dae-Hoon;Lee, Kang-Hwi;Lim, Jae-Kyu;Lee, Seung-Tae
    • International Journal of Highway Engineering
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    • v.16 no.6
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    • pp.51-57
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    • 2014
  • PURPOSES : An conventional method for electric power generation is converting thermal energy into mechanical energy then to electrical energy. Due to environmental issues such as global warming related with $CO_2$ emission etc., were the limiting factor for the energy resources which resulting in extensive research and novel technologies are required to generate electric power. Thermal energy harvesting using thermoelectric generator is one of energy harvesting technologies due to diverse advantages for new green technology. This paper presents a possibility of application of the thermoelectric generator's application in the direct exchange of waste solar energy into electrical power in road space. METHODS : To measure generated electric power of the thermoelectric generator, data logger was adopted as function of experimental factors such as using cooling sink, connection methods etc. Also, the thermoelectric generator、s behavior at low ambient temperature was investigated as measurement of output voltage vs. elapsed times. RESULTS : A few temperature difference between top an bottom of the thermoelectric generator is generated electric voltage. Components of an electrical circuit can be connected in various ways. The two simplest of these are called series and parallel and occur so open. Series shows slightly better performance in this study. An installation of cooling sink in the thermoelectric generator system was enhanced the output of power voltage. CONCLUSIONS : In this paper, a basic concepts of thermoelectric power generation is presented and applications of the thermoelectric generator to waste solar energy in road is estimated for green energy harvesting technology. The possibility of usage of thermoelectric technology for road facilities was found under the ambient thermal gradient between two surfaces of the thermoelectric module. An experiment results provide a testimony of the feasibility of the proposed environmental energy harvesting technology on the road facilities.

Urban Park and Green Space Planning System according to Newly Enacted Land Planning Related Laws, South Korea

  • Lee Myung-Woo
    • Journal of the Korean Institute of Landscape Architecture International Edition
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    • no.2
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    • pp.25-31
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    • 2004
  • Newly revised Urban Park Act and Land Planning Law are evaluated. Through exploring their functions and limits. Critical guidelines for Green Space Preservation and Planning Law are suggestec. The following is the summary of the findings: 1. New urban and regina! planning system has the foundation for green space plannig expressed as environmental planning, green space planning, landscape planning and park planning. 2. New Urban park act broadens and diversifies the range of urban park and green space(eg, stream and river, road, detention pond etc.) 3. The Urban Natural park items are removed because of long tenn unconstructed urban facilities and the new concept of 'Urban Park Zone' are inserted. And Green Space Preservation District and Urban Greening District's were introduced. And system of Contract of green space utilization and Agreement of Greening were adapted. 4. There exists new emerging needs for establishment of comprehensive green space preservation and planning law. 5. And the green space system can be classified to preservation system, recreation system and scenery system .. 6. The types of proposed green space planning are regional green space plg. urban green space plg, and district unit green space plg.

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An Empirical Study on the Function and Effect of Urban Openspace - Focusing on Urban Roadside Trees - (도시녹지의 기능 및 효과에 대한 실증적 연구 - 도시 가로수를 중심으로 -)

  • 성현찬;민수현
    • Journal of the Korean Institute of Landscape Architecture
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    • v.31 no.2
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    • pp.48-57
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    • 2003
  • The objective of this study is to review and verify whether the functions and effect of roadside trees generally hewn in theory are actually realized in urban roads and how well they are performed if the function and effect are realized. The study was conducted with a focus on 3 functions and effects including roadside tree's urban landscape improvement function (green area visibility ratio), effect of introducing green area within a city, and urban green network building function. The major study results are as follows: First, the average green area visibility ratio of 41 study areas is currently about 25.90%. The green area visibility ratio of commercial area within downtown was lowest among 5 road types. It showed that it is possible to raise the average green area visibility ratio up to 32.49% through roadside tree management and additional plantation. Second, in a section between Paldal Mountain and Suwon City Hall where there is no forest fragments and parks at all, a green area of 4,826 roadside trees represented 2.4% of total area and served as the only linear green area. Third, an analysis of 15 cities in Kyonggi province showed that urban forests are concentrated in outskirts. The suey showed that because forest fragments and parks exist in a form of points in urban areas, roadside trees are the only green areas that link each other and build a network.

A Study on Green Net-Work Construction for Urban Heat Island Mitigation in Dalseo District, Daegu Metropolitan City (도시열섬현상 저감을 위한 그린네트워크 구축 방안에 관한 연구 - 대구광역시 달서구를 대상으로 -)

  • Kim, Gi Ho;Kim, Su Bong;Jeong, Eung Ho
    • Journal of Environmental Science International
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    • v.13 no.6
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    • pp.527-535
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    • 2004
  • As urbanization has been expanded in Korea, open spaces, such as urban parks and public sites, have been utilized for other uses, and then this bring out environmental changes for the worse. It is expected that these changes become more serious problems due to overpopulation, increasing individualism, and development of transportation. This research base on the consideration of connecting between decreasing urban green spaces and distributed green sites so as to build the substantial plan for the Green Network construction for urban heat island mitigation in Dalseo district, Daegu Metropolitan City. The result were as follow; 1) Connecting existing natural sites to the remained parks green zone made an Ideal form of Green-Network system. 2) Some school sites were selected for usable open spaces in order to build Green-Network system, and the plan connecting together with exist natural sites was suggested. 3) Moreover, the scheme of planting on the road spaces for connecting green spaces was proposed. 4) The devices of planting on the urban riverside for enhancing the role of urban stream to form green network was conceived.

A Case Study on Energy Consumption and Calibration of Green Remodeling Buildings (그린리모델링 건물에 대한 에너지소비량 및 보정 사례연구)

  • Kim, Dongi;Lee, Byeongho
    • Journal of the Korean Solar Energy Society
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    • v.40 no.5
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    • pp.47-58
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    • 2020
  • Ministry of Land, Infrastructure and Transport(MOLIT) has increased reduction rate from 18.1% to 32.7% in Building sector compared to BAU of the national greenhouse gas emission according to the 2030 Greenhouse Gas Reduction Road map Amendment. For this purpose, MOLIT has been activating the green remodeling projects for existing buildings. Considering that 15 year old buildings after completion are 74% (5.25 million buildings) among about 7 million existing building stocks in Korea, reduction of building energy consumption by green remodeling is urgently needed, However, it is a major difficulty of activation for green remodeling projects because there are few case studies on Before and After building energy consumption of actual green remodeling projects. Considering that building energy performance and value increase after green remodeling through previous researches, additional studies of the energy consumption assessment on actual green remodeling projects are essential. Therefore, this study aims to propose results on Before and After building energy consumption of actual green remodeling projects.

A Study on the City Wind Trail in Daegu (대구시 도시풍도에 대한 연구)

  • Choi, Young-Sik
    • Journal of the Korean Society of Industry Convergence
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    • v.9 no.1
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    • pp.29-35
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    • 2006
  • The population of Daegu, the third biggest city in Korea, is two point six million. Daegu is known as a basin or a city where it is not only too hot in summer but also too cold in winter. Recently with redevelopment apartment house boom, a 40-story or more apartment complexes are under construction near Shin-cheon and Dondaegu-ro, the south-north axis of Daegu. It is necessary to raise several points about blocking a road of the wind by high-rise apartment buildings and apartment complexes. As a kind of the green policy, Daegu enlarge the distance between apartment building by reconstructing low-rise apartment into high-rise and impose a duty of a green space on the ground by making a parking zone into an underground. Through this process, apartment complexes changed from a '一'shape to a '口'shape. It increases heat island phenomenon of a city by blocking a road of the wind that comes from Shin-cheon and Dondaegu-ro. To circulate the polluted air of Daegu basin, we need local wind. There are four effective measures. 1) Throw three greens into one in the center of the road at the north side in the same way of the south side of Dongdaegu-ro, 2) reflect the information of roads of the wind including heights, spaces and directions of buildings, 3) steer clear of a high-rise buildings and development apartment house constructions, and 4)select a city for benchmarking to be the environmental capital.

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A Study on Modal Shift effect - Focused on O/D between Busan-Gyeonggi Area -

  • Kang, Dal-Won;An, Young-Mo;Nam, Ki-Chan;Kwak, Kyu-Seok
    • Journal of Navigation and Port Research
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    • v.35 no.9
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    • pp.777-783
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    • 2011
  • Interest about Modal Shift is not being decreased, and it is drawing limelight as green logistics which meets low carbon green growth of National development vision. As an effect of Modal Shift, not only reduction in CO2 emission but also reduction in social cost, logistics cost etc. are being discussed. However, until now research about its practical transformation effect has been scanty. In this study, the actual expenses via CO2 emission, social cost, and logistics cost etc. by road transportation and rail transportation of container cargo with Origin/Destination between Busan-Kyeonggi Area were calculated and we propose beneficial effects when transportation mode is transformed from road to rail with Scenario Planning.

A Preliminary Study on Development of the Evaluation Criteria for Environmental Improvement Effects at the Green Roads Rating System (녹색도로 인증제도의 환경개선효과 평가항목 개발을 위한 기초연구)

  • Kim, Hyun-Woo;Lee, Du-Heon;Park, Jae-Woo;Koo, Jai-Dong
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2012.05a
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    • pp.165-167
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    • 2012
  • The purpose of this study is introduction of social and economic benefits of environmental improvements of Korea green road certification system. Focus of Evaluation Criteria is possibility of quantification on environmental improvements. Proposed evaluation items is noise, air pollution, water quality, ecological and green spaces, waste, and space resistance. The results of this study is expected to be used to support of Green Roads Rating System in korea.

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