• 제목/요약/키워드: Solar City

검색결과 175건 처리시간 0.02초

공동주택의 입면 변화에 따른 일사량 분석 -Skyline 변화를 중심으로- (Study on the Solar Flux on Facade Variation in Apartment Housing)

  • 이덕형;최창호
    • 한국태양에너지학회 논문집
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    • 제27권2호
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    • pp.1-9
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    • 2007
  • Recently, the point of view about housing environment in the city has changed from the traditional point of view of the center of housing to the subject of land- utilization-control for interaction of buildings. Right of light is the center of this issue in other words. Also many interests about the beauties of the city have increasing centering around Europe etc. This is to change a city design into the characteristic design from the exiting uniform design. As if reflect this situation, recently we are setting up the night illumination and constructing a building which acted as Land Mark like the Jong-Ro Tower. And Apartment Housing was being built various form deviate from a existing standardized form and skyline. Existing studies about sunshine of Apartment Housing have dealt with just about a standardized Apartment Housing form. So this study analyzed a recently increasing interest for Right of light and change of sunshine environment on Apartment Housing which have a various skyline form.

도시의 방사전열에 관한 기초 연구 (A Basic Study on Urban Radiation Heat Transfer)

  • 김종민
    • 한국태양에너지학회 논문집
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    • 제22권4호
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    • pp.35-43
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    • 2002
  • This research makes that quantitative radiation property of an actual town ward is obtained in quest of the parameter with regard to a radiation heat transfer property and set up several town ward models that reproduced a solid form of a city along the attribute of the city. A regular trend possibility that is able to evaluate a radiation characteristics of a town ward quantitatively from a town ward guideline and confirmation that is produced about each parameter as a result of a numerical value simulation it obtained. This research shot a coefficient of Gebhart's emission absorption. sky radiation absorption rate direct solar radiation absorption rate the parameter with regard to a radiation heat transfer characteristics of a town ward in each town ward model and a volume rate of a town ward advances case study under regular such condition and shot the absorption rate, direct and others days and calculated an absorption rate and checked about the relation between a town ward and each radiation heat transfer property of a city.

태양복사열에 따른 지표면 온도와 열, 기류 환경 시뮬레이션 연구 (CFD Simulations of the Ground Surface Temperature and Air Temperature, Air flow Coupled with Solar Radiation)

  • 이주희;김재권;윤재옥
    • KIEAE Journal
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    • 제14권3호
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    • pp.65-70
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    • 2014
  • The thermal environment in a small city rapidly deteriorates due to the urbanization and overpopulation. It is important to understand and predict the thermal environment in a city area. The thermal environment is highly affected by the solar radiation and temperature distributions changing over time periodically. To predict the thermal environment precisely, the solar radiation calculation including radiation strength, incidence angle, and thermal radiation between building surface and ground should be considered. In this study, the computational domain includes various artificial structures such as building, ground, asphalt, brick and grass. To consider the solar radiation, the unsteady state numerical calculation is performed from sun rise to mid-day (2:00pm). The numerical methods consist of solar load and one dimensional heat conduction through the boundaries to reduce the computational load and improve the flexibility of the calculation.

태양광 발전량 예측 도구별 입력 요소 분석 및 실제 발전량 비교에 관한 연구 (Comparison of Measured and Predicted Photovoltaic Electricity Generation and Input Options of Various Softwares)

  • 노상태
    • KIEAE Journal
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    • 제14권6호
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    • pp.87-92
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    • 2014
  • The objectives of this study are to investigate input variables of photovoltaic generation programs and to compare their prediction to actual generation of photovoltaic system in the C city hall and the C city sewage treatment plant. We investigated the actual amount of generation, the forecast amount of generation, the amount of solar radiation data, and calculated the relative errors. We simulated the photovoltaic system of C city hall and the C city sewage treatment plant located in Chungju using existing programs, such as SAM, RETSCREEN, HOMER, PV SYST, Solar Pro. The result of this study are as follows : Through examining the relative errors of monthly predicted and actual generation data, monthly generation data showed big errors in winter season?. Except winter season, actual amount of generation and the predicted amount of generation showed no large errors.

하절기 도시 유형별 기상요소 비교 -대구광역시와 인근 4개 지역을 중심으로- (Comparison of Meteorological Elements by Type of City during Summer Season - Focus on the Daegu Metropolitan City and the Surrounding Four Regions -)

  • 최동호;이부용;정형세
    • 한국태양에너지학회 논문집
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    • 제34권6호
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    • pp.111-122
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    • 2014
  • The purpose of this study is to understand relation of meteorological elements of air temperature, relative humidity and vapor pressure of four cities with Daegu. The followings are main results from this study. 1) There is very high correlation of meteorological elements according to distance between city and city. 2) In case of seaside town at Pohang, there were little changes than other cities for temperature, humidity and vapor pressure. 3) It was analysed stable and similar diurnal variation in water vapor pressure than air temperature and relative humidity at all observation site.

도시계획단계에서의 에너지 플랜트 선정을 위한 평가방안 제시 및 적용 (The Suggestion and application of the Evaluation Method for Selecting Energy Plant on City Planning Step)

  • 박진영;박률;이정재
    • 한국태양에너지학회 논문집
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    • 제32권4호
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    • pp.34-42
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    • 2012
  • The forecasted energy shortage tends to encourage to develop the next generation energy to countermove the energy problems and the climatic change all over the world. Korean government is pushing ahead with the policy for 'Low Carbon Green Growth' to deal with climate changes and to overcome energy problems. And many studies for low carbon green city or zero carbon city have been progressed. In this study, energy plants and energy scenarios are selected by energy supply suited features of city at city plan. The method to evaluate energy scenario can be proposed to apply various energy plants for energy demand on city planning step and evaluation method can be systematized to be used by users. Also the calculated values are changed into index for comparison according to each energy scenario.

태양전지셀의 본질안전 방폭성능 평가 (The Intrinsic Safety Evaluation of Solar Photovoltaic Cell)

  • 이춘하;지승욱;김시국
    • 조명전기설비학회논문지
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    • 제25권7호
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    • pp.49-54
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    • 2011
  • Now the world will regulate the CO2 emission due to environmental issues. For an alternative plan photovoltaic system is watched. So, photovoltaic system is trend of big city and it is mandatory for renovation of construction. Oil & gas filling station existed in city is suitable to found the photovoltaic system. But the general photovoltaic system in oil & gas filling station is difficult to found because it is classified into hazardous area. This paper evaluates intrinsic safety evaluation of solar cell for making basic data to found for the photovoltaic system on hazardous area. The intrinsic safety characteristic is evaluated by short-circuit ignition test using IEC type spark ignition test apparatus and temperature rising test. The result of short-circuit ignition test, propane-air mixture gas is exploded on condition that 4 solar cells(9[V], 90[mA]) are connected serially under insolation 800[W/$m^2$]. So, if a larger solar module will be used at oil & gas filling station than we were tested, it needs explosion proof. As the result of rising temperature test, the temperature rising due to short circuit is not so much, but when the temperature rises due to radiant heat, it demands careful consideration for environmental influence.

태양광 적지분석에 기반한 친환경 주거단지 계획 - 대구광역시를 대상으로 - (Eco-Friendly Residential District Plan Based on Site Suitability Analysis for Solar Energy - A Case Study of Daegu -)

  • 손정민;엄정희
    • 한국지리정보학회지
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    • 제20권3호
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    • pp.153-169
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    • 2017
  • 본 연구에서는 솔라시티를 지향하고 있는 대구광역시를 대상으로 GIS 프로그램을 이용한 태양광 적지분석을 통해 적지유형을 분류하고, 구군별 적지현황을 알아보고자 하였다. 또한 이 결과를 바탕으로 실제 대상지를 선정하여 솔라에너지를 중심으로 한 친환경 주거단지를 계획하였다. 이를 위해서 기존 사례연구 고찰을 통해 태양광시설 설치 조건 및 기준을 확립하여, 적지 지표를 선정하였고, 선정한 지표를 입지조건, 배제조건, 등급조건으로 구분하였다. 분석 결과 대구광역시 태양광 적지면적은 총 $153.95km^2$로 대구광역시 면적 대비 17.6%를 차지하고 있었으며, 달성군에서 가장 크게 나타났다. 적지 지도를 바탕으로 대구광역시 동구 신서동에 위치한 단독주택단지를 대상지로 선정하여 솔라에너지를 중심으로 한 단지계획을 제시하였다. 본 연구는 대구광역시 태양광 적지분석에 있어 다양한 지표를 고려하고, 분석함으로써 향후 대구광역시 태양광 사업 및 정책에 기초자료로 활용될 수 있을 것이며, 계획한 친환경 주거단지는 솔라시티 대구광역시의 이미지를 명확하게 홍보하는데 기여할 수 있을 것으로 판단된다.

포항시의 집합 주거공간에 있어서 외장재 및 도로 구성재료가 인체 온열 쾌적성에 미치는 영향 (The Effect of the Materials of an Outer Wall and the Paved Street on Human Thermal Comfort in a Housing Complex in Pohang City)

  • 정창원;김경대;최영식
    • 한국산업융합학회 논문집
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    • 제4권3호
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    • pp.319-327
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    • 2001
  • The objective of this study is to clarify the effect of thermal radiation environments on human thermal comfort, depending on different canyon types and surface materials on the human thermal comfort in a housing complex in Pohang city, Korea. For this purpose, the operative temperature and new effective temperature were calculated based on the modified mean radiant temperature of canyon models variated by the existence of direct radiation existence, surface materials, and the width and length of the street spaces in a housing complex. These indices for the canyon have been calculated from the meteorological data of Pohang city, which include air temperature, relative humidity, air velocity, global solar radiation and cloud. And the monthly averages of these climate factors measured at noon have been used. The results are as follows: (1) It is revealed that the short-wave radiosity reached the human body is affected by direct solar radiation and surface materials, and the long-wave radiosity by canyon types. (2) The existence of direct solar radiation, the kinds of surface materials and canyon types affect operative temperature($OT_n$) and new effective temperature($ET^*{_n}$). (3) The analysis of the human heat balance in the canyon indicates that the influence of radiation on human body is marc likely to be affected by the existence of direct solar radiation on human model.

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Dish-Stirling 태양열 발전시스템 운전 및 성능분석 (Performance of Dish-Stirliling Solar Power System)

  • 김진수;강용혁;이상남;윤환기;유창균;김종규;조덕기
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2006년도 추계학술대회
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    • pp.180-183
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    • 2006
  • As a final step for developing a small-scale solar thermal power generation technology, a demonstration project for a dish-stirling power system has been carried out by KIER. During the two years project period, 10kW solar-only power system was built in Jinhae city and successful solar operations were demonstrated. In this paper an example of typical clean day operation and analysis results was introduced.

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