• Title/Summary/Keyword: Urban Generation

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Study on Estimation of Urban Anthropogenic Heat Generation (도시의 인공열 산정에 관한 연구)

  • 손은하;김유근;홍정혜
    • Journal of Korean Society for Atmospheric Environment
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    • v.16 no.1
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    • pp.37-47
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    • 2000
  • The Urban thermal environment is influenced and modified in many ways. One modification is brought by the anthropogenic heat generation emitted from the combustion processes and the use of energy such as industrial, domestic and traffic procedure. The anthropogenic heat generation affect an the increase of urban temperature, the well-known urban heat islands. The study on the urban thermal environment needs a great deal of the statistic data about the inner-structure of urban, the contribution of different constructions and the traffic amount on urban thermal environment in finite region. In order to overtake a quantitative analysis of effect of the anthropogenic heat, a distribution map of the urban anthropogenic heat was made using hte data of the energy consumption used at the several constructions and traffic amount of vehicles in Pusan Metropolitan. Annual mean heat flux over the 4$\textrm{km}^2$ urbanized area in Pusan is 41.5W/$m^2$, ranging from 31.4W/$m^2$ in summertime to 59.5W/$m^2$ in wintertime and maximum diurnal anthropogenic heat generation is corresponding to 10% of irradiance during summertime.

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Analysis on Power Generation Characteristics of a Vehicle Rooftop Photovoltaic Module with Urban Driving Conditions (도심 주행 조건에 따른 차량 탑재 태양광모듈의 발전특성 분석)

  • Jeon, Seonwoo;Choung, Seunghoon;Bae, Sungwoo;Choi, Jaeyoung;Shin, Donghyun
    • The Transactions of the Korean Institute of Power Electronics
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    • v.25 no.2
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    • pp.79-86
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    • 2020
  • This study examines the power generation characteristics of a vehicle rooftop photovoltaic module with urban driving conditions. Actual test data with an illuminometer and a thermometer were used to analyze the power generation characteristics of the vehicle rooftop photovoltaic module. In addition, the power generation characteristics were analyzed in terms of urban driving conditions, irradiance, ambient temperature, and photovoltaic module temperature. This study also analyzes the power generation characteristics of the vehicle rooftop photovoltaic module with urban driving conditions through a wavelet transform filtering method. The power generation characteristics of the vehicle rooftop photovoltaic module with urban driving conditions depend on the change in irradiance rather than that in photovoltaic module temperature.

The Estimation of Users' Benefit in Next Generation Urban and Rural Smart Weather Service Technique Research and Development Project (차세대 도시.농림 융합 스마트 기상서비스기술 개발 사업의 이용자 측면 편익 추정)

  • Lee, Joo Suk;Yoo, Seung Hoon
    • Journal of Korea Technology Innovation Society
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    • v.16 no.3
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    • pp.630-649
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    • 2013
  • Korea Meteorological Administration has promoted the next generation urban and rural smart weather service project. The purpose of this project is to provide the necessary information to urban and rural districts by using the subdivided meteorological information. This study attempts to assess the value of the next generation urban and rural smart weather service project by using contingent valuation method. According to estimating result, annual mean willingness to pay per household for the next generation urban and rural smart weather service project is 2,947 won.

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The Investigation of Problems for Next Generation Energy System during Existing Urban Plan Stage (기존 도시계획 단계에서 차세대에너지시스템 적용시 문제점 검토)

  • Park, Jin-Young;Kim, Sam-Uel;Park, Yool;Lee, Sang-Jin;Lee, Jurng-Jae
    • 한국태양에너지학회:학술대회논문집
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    • 2009.04a
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    • pp.190-195
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    • 2009
  • Since the industrial revolution, the global environmental problems such as greenhouse gas accumulation and the average temperature increase have caused people's attention. 'Low Carbon, Green Growth' was presented to cope with these global concerns, as one of main policies of 2008 in Korea. The paradigm of a green urban development is started to concern the whole city's energy problems owing to realize 'Low Carbon, Green Growth' in the urban side. The government established a nation's basic energy plan for 20 years, and some local cities made efforts to develop new renewable energy such as the solar, wind and water energy which are suitable to each city's character. As a part of these efforts, the concept of U-Eco city is newly appeared to reflect upon ubiquitous technique, urban ecology and the next generation energy system. However, urban plan is difficult to adopt this next generation energy system with existing laws, regulations and technical systems. The new executive and systematic system is needed to realize the U-Eco city U-Eco for the management of an efficient city. In this study, the authors investigate the concept of the next generation energy system and U-Eco city to realize the energy-efficient city plan and analyze problems to occur during the application of them in an existing city plan. Then, the authors show the remedies to deal with occurred problems.

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An Analysis on Preference of Interior Coordination Elements for Urban Small Housing - Focused on Gold-Generation(Gold Miss, Gold Mr.) - (도시형 소형주택의 실내코디네이션 요소 선호 분석 - 골드세대(골드미스, 골드미스터) 수요자를 중심으로 -)

  • Kim, So-Hee;Han, Young-Ho
    • Korean Institute of Interior Design Journal
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    • v.21 no.5
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    • pp.264-271
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    • 2012
  • As changed population structure variously, population decrease is one of the important problem in present urbanization. It resulted decline of the medium-large size housings that increasing of 1-2 person household need the variety of small housing with housing type. This study was researched the Gold-Generation on theme by Gold Miss, Gold Mr. who preferring urban small housings that it analyzed survey of Gold generation who be wanted urban small housing by interior coordination elements. Data to be analyzed that first, Gold Mr. and Miss are preferred two bedroom applied by spatial structure coordination. Especially it is based on the separation between livingroom and bedroom with duplex type which is bathroom formed single unit type(shower/toilet/basin). In interior coordination of spatial elements, Gold Mr. considered the form of kitchen with huge ㄷ type instead of Gold Miss are preferred alpha room or alpha space to use powder room or dress room. Second, In Preference of interior coordination elements, Gold Mr. and Miss are preferred bed-clothes and curtains by fabrics, lighting are hanging and spot lighting, accessories are carpet with rug and porcelains. Color are preferred bright scheme both white and ivory, however preference of furniture is different from Gold Mr. and Gold Miss that Gold Mr. are ordered desk, sofa and shelves but Gold Miss are preferred sofa, bed, and dressing table. It showed between Gold Mr. and Gold Miss are equal needs or differences. It expects the basic research for understanding the interior coordination elements for preference in urban small housing as focused on Gold generation(Gold Miss, Gold Mr.) that they will be applied the interior space on urban small housing.

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Optimization of settlement layout based on parametric generation

  • Song, Jinghua;Xie, Xinqin;Yu, Yang
    • Advances in Computational Design
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    • v.3 no.1
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    • pp.35-47
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    • 2018
  • Design of settlement space is a complicated process while reasonable spatial layout bears great significance on the development and resource allocation of a settlement. The study proposes a weighted L-system generation algorithm based on CA (Cellular Automation) model which tags the spatial attributes of cells through changes in their state during the evolution of CA and thus identifies the spatial growth mode of a settlement. The entrance area of the Caidian Botanical and Animal Garden is used a case study for the model. A design method is proposed which starts from the internal logics of spatial generation, explores possibility of spatial rules and realizes the quantitative analysis and dynamic control of the design process. Taking a top-down approach, the design method takes into account the site information, studies the spatial generation mechanism of settlements and further presents a engine for the generation of multiple layout proposals based on different rules. A optimal solution is acquired using GA (Genetic Algorithm) which generates a settlement spatial layout carrying site information and dynamically linked to the surround environment. The study aims to propose a design method to optimize the spatial layout of the complex settlement system based on parametric generation.

Quantitative Study on the Effect of the Building Composition on the Urban Thermal Environment (건물군 조건이 도시 열환경에 미치는 영향에 관한 정량적 검토)

  • Yeo, In-Ae;Yoko, Kamata;Yee, Jurng-Jae;Yoon, Seong-Hwan
    • 한국태양에너지학회:학술대회논문집
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    • 2009.04a
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    • pp.180-183
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    • 2009
  • In this study, Urban Climate Simulation was performed by 3-Dimensional Urban Canopy Model. The characteristics of urban climate was analyzed combining artificial land coverage, building size, heat production from the air conditioning and topographic conditions as physical variables which affects urban climate characteristics. The results are as follows. (1)The aspects of the urban climatal change is derived to be related to the combination of the building coverage ratio, building height and shading area. (2)Whole heat generation was influenced by the convective sensible heat at the lower building height and by the artificial heat generation at the higher one over 20-story building influence to some extent of the building coverage ratio. The effect of the altitude is not more considerable than the other variables as below $1^{\circ}C$ of the air temperature.

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Analysis on the Effects of Building Coverage Ratio and Floor Space Index on Urban Climate (도시의 건폐율 및 용적률이 도시기후에 미치는 영향 분석)

  • Yeo, In-Ae;Yee, Jurng-Jae;Yoon, Seong-Hwan
    • Journal of the Korean Solar Energy Society
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    • v.29 no.3
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    • pp.19-27
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    • 2009
  • In this study, Urban Climate Simulation was performed by 3-Dimensional Urban Canopy Model. The characteristics of urban climate were analyzed combining artificial land coverage, building size, heat production from the air conditioning and topographic conditions as physical variables which affects urban climate characteristics. The results are as follows. (1) The aspects of the urban climatal change is derived to be related to the combination of the building coverage ratio, building height and shading area. According to the building height, the highest temperature was increased by $2.1^{\circ}C$ from 2-story to 5-story building and the absolute humidity by 2.1g/kg maximum and the wind velocity by 1.0m/s was decreased from 2-story to 20-story building. (2) Whole heat generation was influenced by the convective sensible heat at the lower building height and by the artificial heat generation at the higher one over 20-story building influence to some extent of the building coverage ratio. The effect of the altitude is not more considerable than the other variables as below $1^{\circ}C$ of the air temperature. In the last, deriving the combination of building coverage and building height is needed to obtain effectiveness of the urban built environment planning at the point of the urban climate. These simulation results need to be constructed as DB which shows urban quantitative thermal characters by the urban physical structure. These can be quantitative base for suggesting combinations of the building and urban planning features at the point of the desirable urban thermal environment as well as analyzing urban climate phenomenon.

An Analysis of Urban Preference in Urban type Elderly Housing in Aging in Place - Around Housing Survey and Future Population Projection and Elderly Survey -

  • Kang, Moon-Chul;Kim, Young-Hoon
    • KIEAE Journal
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    • v.17 no.5
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    • pp.5-14
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    • 2017
  • Purpose: In korea, Aging in Place is underway as an alternative to elderly housing for the aging population. Currently, research is being actively conducted mainly for the baby boomer generation and older generation. There is not much research on various ages that will be needed continuously in elderly housing and aging in place in the future. Therefore, this study suggests aging in place of urban elderly housing through analysis of urban preference of all ages. Method: An analysis of prior studies related to elderly housing, Field interpretation about Aging in Place, An analysis of the city preference through the survey of the elderly, Existing Literature Survey, Housing Survey, Future Population Projection, Survey of the elderly and confirmed the necessity of the Aging in Place of urban elderly housing. Result: As there are many generations living in the city and many people prefer it, studies on urban elderly housing should be actively conducted and should be studied as Aging in Place that can be used for all ages. In addition, it is necessary to study the advantages and disadvantages of using Aging in Place in the city through domestic or overseas case analysis.

A Study on Estimation of Construction Wastes Units in Urban Development (도시개발지구내 건설폐기물 발생원단위 특성연구)

  • Kim, Sang-Keun;Chung, Ha-Ik;Kwon, Ki-Bum;Yu, Jun
    • Proceedings of the Korean Geotechical Society Conference
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    • 2008.10a
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    • pp.1452-1455
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    • 2008
  • In order to establish active and effective recycling plans on construction wastes, the study seeks to built unit generation data per construction waste types on each sector, prepare units data on urban construction waste generation and serve as meaningful data on the establishment of policies on construction waste recycling targeting urban regions. The significance of the study is on the establishment of construction waste recycling plan prior to generation, not as complementary measures on construction waste generated.

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