• 제목/요약/키워드: Installation Cost

검색결과 1,180건 처리시간 0.026초

비정형 콘크리트 장식몰드 생산관리 기초연구 (A Basic Study of Production and Installation Management of Free-form Concrete Molds)

  • 김기호;김도영;장덕배;김선국
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2018년도 춘계 학술논문 발표대회
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    • pp.112-113
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    • 2018
  • As the building becomes more sophisticated, indoors and outdoors exterior decoration of construction has been increased. However, it is very difficult to produce an FDM(Free-form Decorative Mold) that meets the requirements of quality, durability, and ease of installation, resulting in a high cost. Therefore, the objective of this study is basic research for economical production of FDM production technology while satisfying the above requirements. For this study, the authors analyze the details of the shape and requirements of the FDM, and the production details and processes that reflect the characteristics. The results of this study can utilize to develop algorithms for production and management of academically efficient FDM and can utilize to secure FDM production technology at commercial level.

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Case Study on Installation of Aids to Navigation Along the Inland Waterways

  • Jeon, Min-Su;Lee, Joong-Woo;Kim, Ki-Dam;Kim, Kyu-Kwang
    • 한국항해항만학회지
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    • 제33권9호
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    • pp.615-621
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    • 2009
  • Road and maritime transport which connecting main cities in the world is already fully saturated, and the loss cost caused by recent high oil prices is getting bigger. Transportation by inland waterway is rising as an alternative method of them. Concerning this, the GI Waterway is on construction to connect the Yellow sea and Seoul. Nevertheless, there are no existing aids to navigation around the area and no studies have been carried out for them. As the construction progresses, installation of proper aids to navigation should be considered and profound studies need to be carried out. This study focused on introduction of the cases and the systems of other countries inland waterway aids to navigation and suggested a suitable navigation aids system along the inland waterways in Korea and a way of installation for that system.

초등학교 건물의 난방설비 선정을 위한 모델 설계 연구 (Model Study for Guidelines of Heating Systems Installation in the Elementary School Buildings)

  • 윤용진;박효순;변운섭;강호석
    • 태양에너지
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    • 제18권4호
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    • pp.95-100
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    • 1998
  • Indoor environment of the classrooms in most school buildings have not been maintained comfortably during the heating and cooling seasons due to the insufficient installation of the heating and cooling systems and their operation in our country. This study aimed to suggest the guideline for installing the appropriate heating systems to make a better environment of the classrooms in the elementary school buildings. Field survey and the computer simulation of the model school were carried out, and the cost of the both installation and operation were compared with different heating systems.

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Suction Pile 공법 개요 및 그 적용 (Introduction of Suction Pile Technology)

  • 조영기;방상철;박중배;곽대진
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2001년도 지반환경 및 준설매립에관한 학술세미나
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    • pp.110-121
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    • 2001
  • The interest in suction piles by the oil industry was risen in the middle of 1980's. Recently, suction piles have been applied increasingly in offshore engineering due to its low cost, simplicity, efficiency, and reliability. Suction piles have normally been used as anchors of floating structures and foundations of marine structures in deep-water locations. Suction piles have several technical advantages over conventional piles and anchors; fast and easy installation at any depth of water, extremely large resistance due to its huge size, and easy retrieval by applying a positive suction pressure inside the pile, etc. Daewoo E&C Co., Ltd. has conducted a series of field suction pile installation and loading tests inside the Okpo harbor located in Geojedo and the Onsan harbor in Ulsan, Korea, during the summer of 2001, which may provide additional validation of the analytical solutions previously developed by the US Naval Facilities Engineering Service Center. This is a brief description of the general mechanisms of suction pile installation and loading capacity based on the study conducted by the US Navy and Daewoo E&C Co., Ltd.

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최대전력관리장치 보급확대를 위한 수요관리 프로그램 개발 (DSM Program of Domestic Diffusion for Demand Controller)

  • 이학주;이한별;박재덕;금병선
    • 한국조명전기설비학회:학술대회논문집
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    • 한국조명전기설비학회 2005년도 학술대회 논문집
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    • pp.345-347
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    • 2005
  • The electric demands increase, financial need for new power plant constructions and environmental problem have led to search for more efficient energy production and load management. To minimize the construction of power plants and reduce total power consumption include installation of demand controller to industrial applications. Accordingly to maximize the load control by the diffusion of demand controller, govermental economic supports as well as the analysis of energy saving effects. This paper presents the cost-effectiveness analysis for DSM program evaluation and case study to analyze demand controller DSM program.

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IEEE 802.11a WLAN 기술의 사용에 의한 배전자동화용 광무선 복합통신망의 구현 (Implementation of Fiber Optic and Wireless Complex Communication Network for Distribution Automation using IEEE 802.11a WLAN technology)

  • 황진권;최태일
    • 조명전기설비학회논문지
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    • 제24권10호
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    • pp.49-57
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    • 2010
  • In order to provide electricity to users economically and safely, distribution automation systems (DASs) monitor and operate components of distribution systems remotely through communication networks. The fiber optic communication network has been mainly installed for the DAS of Korea Electric Power Corporation (KEPCO) because of its huge bandwidth and dielectric noise immunity. However, the fiber optic communication network has some shortcomings that its installation cost and communication fee are expensive. This paper proposes a complex network where WLANs are combined with conventional fiber optic communication networks in order to expand DAS easily and inexpensively. A fixed wireless bridge communication unit (FWB-CU) for the proposed complex network is implemented using IEEE 802.11a WLAN technology. The proposed complex network is built actually to verify its feasibility experimentally as a DAS communication network.

태양광 발전소의 전기설비 설계 및 저압 계통연계 적용사례에 관한 연구 (A Study on electric facilities plan and application of low-voltage grid connection for a photovoltaic electric power station)

  • 임경미;김경화
    • 한국조명전기설비학회:학술대회논문집
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    • 한국조명전기설비학회 2009년도 춘계학술대회 논문집
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    • pp.305-308
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    • 2009
  • This paper resents a study on the electric facilities plan and application of low-voltage grid connection for a photovoltaic electric power station. The analysis for an installation cost is carried out and a new plan to solve the problem caused by a voltage drop in a low-voltage grid connection is devised. It is expected that the results can be usefully applied to spread the photovoltaic electric power station.

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Feasibility Analysis for Introducing ESCO Program of LED Luminaire Replacements in Schools

  • Shin, Hyunman;Jang, Woojin
    • 조명전기설비학회논문지
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    • 제30권1호
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    • pp.8-13
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    • 2016
  • Public institutions should replace their luminaires with LED lighting by 2020 to save energy. Because the LED lighting installation rate in schools has not yet reached the legal goal, the ESCO program feasibility was investigated. The amount of electricity used, electric rates, times of use in classrooms and fluorescent lighting maintenance costs etc., as well as the elements of lighting maintenance were analyzed. In the case of schools, the lamp usage time was so short that the ESCO projects with only energy savings were impossible. In order to execute the ESCO projects, the maintenance cost savings by replacing an existing luminaire should be considered and the introduction of the relatively cheaper tube type LED lamp than the flat type LED luminaire was required.

Feasibility study for wrap-buoy assisted wet-tow and stepwise installation of mono-bucket foundation for 15 MW offshore wind turbine

  • Ikjae, Lee;Moohyun, Kim
    • Ocean Systems Engineering
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    • 제12권4호
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    • pp.413-437
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    • 2022
  • An innovative concept for wet-transportation and stepwise installation of mono-bucket foundation for 15 MW offshore wind turbine is proposed. Case studies for two different mono-bucket and wrap-buoy dimensions are conducted and their hydrostatic and hydrodynamic performances are compared for both wet-towing and lowering operations. The intact stability and transient responses are analyzed in detail for various stages of lowering operation. Wave-induced motion statistics during wet tow in sea state 4 (highest operational window) are checked. The proposed concept is found to be feasible and can be an alternative cost-effective solution without using heavy-lift crane vessel in practice.

터널사고 재난 안전비용 분석 방법에 관한 연구 (A Study on the Analysis Method of Safety Cost of Tunnel Accident)

  • 백충현
    • 대한안전경영과학회지
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    • 제23권1호
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    • pp.23-30
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    • 2021
  • This paper analyzed a survey of 388 general target samples to analyze the correlation between disaster safety costs and human risk factor analysis and evacuation behavior due to tunnel accidents. Considering the impact of the tunnel accident on disaster safety costs and the correlation between human evacuation and risk factors in the tunnel environment, the system should be reorganized to reflect the tunnel's basic plan, tunnel cross-section, tunnel installation.