• Title/Summary/Keyword: 온실효과

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An Analysis on Korean Nuclear Power's Contribution to the GHG Emission Reduction and the Economic Effect (한국 원자력발전의 온실가스 저감 기여도 및 경제적 효과 분석)

  • Cho, Byung-Oke;Kim, Shin-Jong;Kim, Jum-Su
    • Journal of Energy Engineering
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    • v.19 no.4
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    • pp.203-214
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    • 2010
  • This study is to assess the reduction of greenhouse gas emission and economic contribution by operating nuclear power plants in Korea. According to the results of applying greenhouse gas emission coefficients to the current nuclear power generation and the estimated nuclear power generation of national energy master plan, it is confirmed quantitatively that nuclear power contributes to reducing greenhouse gas emission, controlling inflation, and substituting import of fossil energies. For the reliable and cost-effective supply of energy and the active respondency to climate change, a continuous expansion of nuclear power is implied to be necessary.

Development of Design Technology of Korean Style Air-Inflated Double-Layer Plastic Greenhouse (한국형 공기주입 이중피복 플라스틱온실의 설계기술 개발)

  • Lee, Hyun-Woo;Sim, Sang-Youn;Nam, Hyo-Seok;Nam, Sang-Woon;Kim, Young-Shik
    • Journal of Bio-Environment Control
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    • v.18 no.3
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    • pp.185-191
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    • 2009
  • The construction of experimental greenhouses, operating test, and analysis on variation of different environment factors were conducted to provide fundamental data for design of Korean style air-inflated double-layer plastic greenhouse. The development of technology of attaching plastic to the structure and fasteners to be able to keep airtight was required in order to maintain proper static pressure in air space of double layer coverings. The insulation effect of air inflated greenhouse was better than conventional type. The temperature of arch type roof was greater about $2^{\circ}C$ than peach type roof in air inflated greenhouse. It was recommended that the plastic should be attached at the edges without clearance length in order to ease installation and raise airtightness of double layer coverings. The transmittance of arch type roof was greater than peach type in air inflated one span greenhouse. The transmittance of air inflated greenhouse was greater than conventional type due to frame ratio and distance between double layers in three span greenhouse. The condensation occurred on conventional type greenhouse was more than air inflated type. It was required to examine for a long time in order to analyze it quantitatively.

Green-house GAS Reduction Through the Environmental Policy Mixes Both Environmental Trading and Carbon Taxes (온실가스 감축을 위한 배출권거래제와 탄소세의 정책혼합 효과 분석)

  • Lim, Jae-Ku;Kim, Jeong-In
    • Environmental and Resource Economics Review
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    • v.12 no.2
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    • pp.245-274
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    • 2003
  • This paper analyzes the economic and environmental impacts of domestic policy to reduce greenhouse gas emissions by focusing on carbon tax, domestic emissions trading and the mixture of these policies. By utilizing a dynamic CGE model, KORTEM, this study shows that the economic cost under carbon tax is projected to be higher than that under emission trading. It is because under carbon tax scheme each emitter in economy must meet its emission target regardless of the abatement cost. On the other hand, emission trading allows emitters to reduce the marginal cost of abatement through trading of emission permits. In designing policy portfolio to address the climate change problem in Korea, therefore, this paper proposes the introduction of domestic emission trading scheme as the main domestic policy Instrument.

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Effect of Yellow Sticky Trap for Controlling Whitefly on Tomato Cultivated in Greenhouse (온실재배 토마토에 발생하는 가루이류에 대한 황색점착트랩 방제효과)

  • Park, Jong-Ho;Hong, Sung-Jun;Han, Eun-Jung;Shim, Chang-Ki;Lee, Min-Ho;Kim, Min-Jeong;Kim, Yong-Ki
    • Korean Journal of Organic Agriculture
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    • v.20 no.4
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    • pp.643-654
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    • 2012
  • We conducted the experiment in order to evaluate the control effect of whitefly using the sticky trap. Both Bemisia tabaci and Trialeurodes vaporariorum were more attracted to yellow sticky trap than white or blue colored traps. When yellow sticky traps were installed in different height around tomato, catches of B. tabaci were not significantly different among the traps and catches of T. vaporariorum on the traps in the upper position were more than lower position. T. vaporariorum was more attracted to trap when host plant is smaller. The attracted number to yellow sticky traps were not significantly different between whiteflies (B. tabaci and T. vaporariorum) and their parasitoids (Encarsia formosa and Eretmocerus mundus). Yellow sticky trap reduced population density of both B. tabaci and T. vaporariorum by more than 80% on tomato nursery in a screen cage. Population density of whiteflies in greenhouse installed yellow sticky traps was less than one third of that in untreated greenhouse.

National Accounts and Greenhouse Gas Emissions: The Korea's NAMEA-air (국민계정과 온실가스 배출: 한국의 NAMEA-air 편제)

  • Kim, Jong-Ho;Kim, Hoseok
    • Environmental and Resource Economics Review
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    • v.19 no.4
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    • pp.963-1001
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    • 2010
  • The national accounting matrix including environmental accounts(NAMEA) includes informations on environmental pressures in relation to economic activities as developed in the national accounts. In the NAMEA, conventional national accounts tables have been extended with accounts in physical units. This paper describes the background for work carried out on environmental accounts in Korea and explains how the NAMEA-air is developed. The Korea's NAMEA-air provided here serves several purposes; (1) a consistent and systemic feature of the interrelationship between the economy and the environment; (2) a basis for environmental economic analysis; and (3) the vital information for climate and air policy planning.

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Estimating Greenhouse Gas Emissions from Municipal Wastewater using Half-spherical Floating chamber (Half-spherical Floating Chamber를 이용한 하$\cdot$폐수처리 시설에서의 온실기체 발생량 산정)

  • 전의찬;장영기;김득수;송민종;김전희
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 1999.10a
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    • pp.280-284
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    • 1999
  • 대기 중에는 $CO_2$, CH$_4$$H_2O$$_2$ 등 온실효과를 일으키는 가스가 포함되어 있고, 이들은 지구의 기온을 일정 수준으로 유지시켜 줌으로써 인간가 동식물에게 살기 좋은 환경을 제공한다. 그러나 산업 혁명 이후 화석 연료 및 화학 물질 사용 증가에 따라 $CO_2$, NOx 및 CFC, VOC 등의 온실가스는 다양한 경로를 통하여 대기 중으로 배출되고 이것은 지구 온난화의 원인이 되고 있다.(중략)

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온실가스 배출권거래제 준비현황 및 향후 일정

  • Park, Ryun-Min
    • Bulletin of Korea Environmental Preservation Association
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    • s.413
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    • pp.11-13
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    • 2014
  • 생산품에 대한 국제적 환경기준은 강화되고, 친환경소비를 실천하는 소비자의 요구도 커졌다. 온실가스 감축은 거를 수 없는 시대적 흐름이다. 우리나라를 비롯한 많은 국가들이 배출권거래제 도입에 적극적인 이유는 여러 가지 긍정적 효과에 기인한다. 배출권거래제는 기존 온실가스 목표관리제에 비해 국가 온실가스 감축비용이 44-68% 수준으로 절감된다고 한다. 또한 기업의 신재생에너지, 에너지 고효율 기술 등 저탄소 분야에 대한 투자와 기술개발을 유인하고, 저탄소 경제구조로의 전환과 경제성장에도 기여한다고 한다. 배출권거래제의 성공적 시행을 위한 중요한 과제는 정부의 면밀한 준비와 할당 대상업체 등 산업계의 적극적 협조다.

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Natural Ventilation Effect of Bending Panel Type Windows in Greenhouse (굴절패널방식 환기창의 자연환기 효과)

  • Lee, Si-Young;Kim, Jin-Young;Kim, Hyun-Hwan;Jeon, Hee
    • Proceedings of the Korean Society for Bio-Environment Control Conference
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    • 2000.10b
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    • pp.71-74
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    • 2000
  • 일반적으로 온실은 저온기에는 보온이나 난방을 하면서 적극 사용하고 있으나 고온기에는 냉방에 소요되는 에너지가 난방에 비해 상대적으로 많이 소요되므로 온실의 활용도가 떨어지게 된다. 자연환기 시스템은 에너지를 사용하지 않거나 최소한으로 줄여 온실내 온도를 최소한 외부와 동일하게 하거나 낮게 하기 위한 장치라고 할 수 있다. 자연환기를 위한 환기창으로 유리온실이나 경질판 온실과 같은 양지붕형 온실에서는 측창으로 3Way방식이나 권취식, 프로젝트방식 등 다양한 환기창을 사용하고 있으나 천창은 주로 온실 길이방향의 연속형 창틀을 랙앤피니언이나 X형 개폐암으로 개폐하는 프로젝트 방식을 많이 사용하고 있다. (중략)

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