원전 건설·운영 인허가 제도 개선의 필요성

이태구,Lee, Tae-Gu 한국플랜트학회 2007 플랜트 저널 Vol.3 No.1

신도시 개발단계에서의 수열에너지 수요예측 및 적용 타당성 분석

이태구(Tae Gu Lee),강한기(Han Ki Kang),문정환(Jung Hwan Moon),박용성(Yong Sung Park),홍영표(Young Pyo Hong) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.11

Feasibility of the application of hydrothermal energy was carried out during the development stage of the new city. The construction cost was calculated and the district heat source was compared on the basis of the same area. The energy usage has excellent thermal efficiency at the level of 48% compared to the district heat source, and the annual operating cost is also about 23%. Hydrothermal energy demand prediction was established and the evaluation items, impact factors, weights and scoring criteria were refined. Demand assessment by building was re-selected by forecasting demand, and optimizing the hydrothermal network.

토양 및 수질 특성 비교를 통한 유기논과 관행논의 환경 특성 분석

이태구(Tae-Gu Lee),구본운(Bon-Wun Gu),박성직(Seong-Jik Park) 대한환경공학회 2016 대한환경공학회지 Vol.38 No.9

본 연구에서는 토양 및 수질 특성 모니터링을 통한 유기논과 관행논의 환경 영향을 조사하였다. 용인과 안성 지역의 유기논과 관행논에서 표층(0~15 cm) 및 심층(15~30 cm) 토양과 수질 시료를 채취 및 분석하였다. 집단 간의 유의성의 차이는 던컨의 다중검정으로 판별하였다. 실험 결과 T-P 농도는 표층 및 심층 토양 모두에서 안성 지역이 용인 지역보다 높게 나타났다. 안성 논토양에서 유기논과 관행논의 T-P 농도의 차이는 유의미한 차이를 보였지만, 용인에서는 나타나지 않았다. 용인과 안성 지역 모두에서 유기논 토양의 T-N 농도는 관행논 보다 낮게 나타났다. 안성 유기논의 심층 토양의 수분함량은 다른 논에 비하여 현저한 차이가 나타났으며, 이는 silt-clay 함량 결과와 일치한다. 관행논 물의 pH와 EC는 유기논에 비하여 높게 나타났다. 안성 지역에서 관행논의 COD, T-P, 그리고 PO4-P가 유기논에 비하여 높게 나타났다. 회귀분석 결과 T-N을 제외하고 토양 특성과 수질 결과 간에 상관성이 없었다. In this study, we investigated the environmental impact of organic and conventional paddy by monitoring soil properties and water quality. We sampled and analyzed topsoil (0~15 cm), subsoil (15~30 cm), and water of organic and conventional paddy fields in Yongin and Anseong, South Korea. The statistical significance between groups was determined by Duncan"s multiple range test. The results show that T-P concentrations in both topsoil and subsoil of Anseong paddy were higher than those of Yongin paddy. The significant difference of T-P between organic and conventional paddy was observed in Anseong but not in Yongin. T-N of organic paddy soil was lower than that of conventional paddy in both Anseong and Yongin region. Water content for subsoil of organic paddy in Anseong was significantly different from others, which is consistent with the results of silt-clay content. pH and EC of water in conventional paddy were higher than those in organic paddy. In Anseong, COD, T-P, and PO4-P concentration of conventional paddy were higher than those of organic paddy. The regression analysis presented that there were no significant relationship between soil properties and water quality data except T-N.

농법 및 시기 변화에 따른 논토양의 환경 특성 분석

이태구(Tae-Gu Lee),박성직(Seong-Jik Park),이용호(Yong Ho Lee) 大韓環境工學會 2017 대한환경공학회지 Vol.39 No.6

본 연구에서는 농법 및 시기에 따른 논토양의 화학성을 비교 분석하였다. 이를 위하여 관행논 11개 필지와 유기논 24개 필지에 대하여 3월, 5월, 8월, 10월에 토양 시료 채취 및 분석을 수행하였고, 실험 분석 결과에 대해 통계 분석을 수행하였다. 분산분석 결과 농법에 의한 유의미한 차이가 나타난 항목은 NH4-N와 P2O5이었지만, 시기에 따른 차이는 모든 항목에서 높은 유의성 있는 차이를 보였다. 주성분 분석 결과 또한 토양내 질소 및 인의 농도는 농법에 의한 영향보다는 시료 채취시기에 따른 영향이 더 크게 나타났다. 토양의 전기전도도는 3월에서 10월로 감에 따라서 값이 증가하였다. 토양 유기물은 3월 및 5월에 비하여 8월과 10월에 높게 나타났다. T-N는 3월에서 10월로 지남에 따라서 감소하는 경향을 나타냈다. NH4-N 및 NO3-N 농도는 관행논 및 유기논 모두 5월에 가장 높게 나타났다. T-P 농도는 8월에 가장 높은 값을 나타낸 반면에, P2O5의 경우에는 8월에 가장 낮은 값을 나타내었다. 본 연구 결과 논토양의 화학적 특성은 농법에 의한 차이보다는 시기에 의한 차이가 더 크게 나타났다. 따라서 토양 환경 특성에 대한 분석 및 비교시 시기에 대한 고려가 반드시 필요한 것으로 판단된다. The aim of this study is to investigate the environmental properties of paddy soils depending on farming methods and seasonal variation. The paddy soils in 11 plots of conventional paddy and 24 plots of organic paddy were sampled and analyzed in four season of March, May, August, and October. The obtained data of soil properties were used for statistical analysis. Analysis of variance showed that only NH4-N and P2O5 were significantly different depending on farming methods. However, the differences of all soil properties depending on seasonal variation were strongly significant. Principal component analysis also presented that nitrogen and phosphorus concentration in soils were more significantly influenced by seasonal variation than farming method. Electric conductivity in soil was decreased from March to October. Amounts of soil organic matter in August and October were higher than that in March and May. T-N was decreased from March to October. NH4-N and NO3-N in the soil of both conventional and organic paddy were higher in May than other seasons. T-P concentration was found to be highest in August, but P2O5 concentration was lowest in August. It can be concluded that seasonal variation should be considered for analysis and comparison of soil environmental properties.

자원회수시설용 폐기물 벙커의 환기 설비 설계 개선에 관한 연구

이태구(Tae-Gu Lee),문정환(Jung-Hwan Moon),문종선(Jong-Sun Moon),이재헌(Jae-Heon Lee),임윤철(Yoon-Chul Im) 대한설비공학회 2003 대한설비공학회 학술발표대회논문집 Vol.2003 No.-

로터리 압축기용 Short-Cycle 신뢰성 시험장치 제안

이태구(Tae-Gu Lee),이상재(Sang-Jae Lee),김현우(Hyun-Woo Kim),김상현(Sang-Hyun Kim),이재헌(Jae-Heon Lee),유호선(Hoseon Yoo) 대한설비공학회 2006 대한설비공학회 학술발표대회논문집 Vol.2006 No.6

In this paper, a test apparatus for reliability evaluation of a rotary compressor has been suggested with a short-cycle concept. CO₂ refrigerant is adopted for this cycle to avoid phase change during cycle operation. Evaporator is not necessary in short-cycle. Utilizing a short-cycle, the test apparatus was built on the purpose of evaluating the reliability of each rotary compressor on the conveyer belt of the factory. The primary validation of the test apparatus is discussed by analyzing the experimental heat balance data. Additional validation was performed through the overload continuous operation test where the wear rate of the CO₂ short-cycle was found to similar to that of the R22 normal-cycle. The reliability evaluation test apparatus with a short-cycle in present investigation was found simple and efficient in the view of reducing sample numbers, costs, and test time in analyzing the reliability of rotary compressors.

지하수 활용 지열시스템 적용을 통한 스마트팜 에너지 절감 사례

이태구(Tae Gu Lee),강한기(Han Ki Kang),문정환(Jung Hwan Moon),박정현(Jung Hyun Park) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6

In this study, a geothermal system using groundwater was introduced in greenhouses for crop production and operating cost savings were compared. The annual energy cost for heating the existing tomato greenhouse is about 130 million won, putting a significant burden on the operation. In order to improve the existing heating system of the tomato greenhouse, a geothermal system and a water-storage type heat pump were applied. As a result of the application of improved heating and cooling system of the tomato greenhouse, operating cost in December was reduced by 39 % compared with the previous system, and CO₂ emission was reduced by 36 % as well.

지하수 활용 지열시스템 적용을 통한 스마트팜 에너지 절감 사례

이태구(Tae Gu Lee),강한기(Han Ki Kang),문정환(Jung Hwan Moon),박정현(Jung Hyun Park) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6

In this study, a geothermal system using groundwater was introduced in greenhouses for crop production and operating cost savings were compared. The annual energy cost for heating the existing tomato greenhouse is about 130 million won, putting a significant burden on the operation. In order to improve the existing heating system of the tomato greenhouse, a geothermal system and a water-storage type heat pump were applied. As a result of the application of improved heating and cooling system of the tomato greenhouse, operating cost in December was reduced by 39 % compared with the previous system, and CO₂ emission was reduced by 36 % as well.

생육환경을 고려한 스마트팜 난방시스템 적용 사례

이태구(Tae Gu Lee),이영진(Young Jin Lee),강한기(Han Ki Kang),문정환(Jung Hwan Moon) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.11

In this study, a geothermal system using groundwater was introduced in greenhouses for crop production and operating cost savings were compared. The annual energy cost for heating the existing tomato greenhouse is about 130 million won, putting a significant burden on the operation. In order to improve the existing heating system of the tomato greenhouse, a geothermal system and a water-storage type heat pump were applied. As a result of the application of improved heating and cooling system of the tomato greenhouse, operating cost in December was reduced by 39 % compared with the previous system, and CO2 emission was reduced by 36 % as well.

애니메이션 미장센 분석

이태구(Lee Tae-Gu),이화세(Lee Hwa-Sei) 한국만화애니메이션학회 2008 만화애니메이션연구 Vol.- No.13

이 논문에서는 영화의 미장센 이론을 바탕으로 애니메이션 미장센을 분석하였다. 애니메이션의 미장센은 영화에서와 달리 그 활용범위가 굉장히 넓다. 이는 실사영화와 합성되어 영화의 장르를 발전시킨 계기가 되었으며 디지털기술의 빠른 성장은 영화의 미장센이론을 다시 정의 하도록 강요하고 있다. 초창기 사실주의 감독들의 미장센 이론이 애니메이션 기법의 도입으로 더욱더 확장되어 디지털 영화에서의 미장센이론이 새롭게 제기되고 있다. 몽타주이론의 편집에 의한 영상 미학이 아닌 한 프레임에서 보여주고자 하는 모든 요소들을 담고 있는 미장센은 애니메이션만의 차별화된 미학으로 발전되어야 하며, 국내 애니메이션의 문제점인 연출력 부재의 현상황을 미장센에 의한 연출력으로 극복되어 야 할 것이다. This paper show that we analyze the mise en scene of animation based on the theory of mise en scene in film. The mise en scene of animation has a large range of utilization in contrast to film. This affects the development of film synthesized with an actuality film. The theory of mise en scene of early realistic film director is extended by the animation techniques. And the theory of mise en scene in digital film is raised newly. The mise en scene in animation has the property that all elements is represented in one frame. And then this has a success in different aesthetics. The problems of in-country animation - the absence of production in the present condition - is to be achieved by the production using mise en scene.