• Title/Summary/Keyword: LCC Analysis

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The Economic Comparision through LCC Analysis on each Graded Alternatives for Green Remodeling of Public Building (공공건축물의 그린리모델링 수준별 LCC (Life Cycle Cost) 분석을 통한 경제성 비교)

  • Kim, Jaemoon;Lee, Junghyuk;Lee, Duhwan
    • Korean Journal of Construction Engineering and Management
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    • v.19 no.2
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    • pp.38-49
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    • 2018
  • Since the ratification of the Paris Agreement (COP21), the government is continuously strengthening policies for the reduction of greenhouse gas of the construction industry in accordance with the growing importance of reducing greenhouse gas and obligation of the government. Especially, the government emphasizes the need to improve the energy performance of old public buildings. Since 2014, the government is running a pilot project in which the government supports the construction cost of the green remodeling project of old public buildings and it is intended to develop the best practice of green remodeling and activate the green remodeling in the private sector. In this study, we analyzed the economical efficiency of the old public buildings by each level through green remodeling and conducted building related investigation and equipment measurement to plan the alternatives of the corresponding buildings. The improvement plan is a green remodeling plan that integrates alternatives. Five improvement plans were developed for each level to analyze the economic feasibility of each plan. As for the analysis method, the first energy demand amount calculation and the LCC analysis were performed through ECO2. In the LCC aspect, the improved 3/4 plan (middle level plan) was the most excellent and results were obtained in the order of the highest cost plan followed by the lowest cost plan. As a result, it is expected that it can be utilized as a basic data for future green remodeling performance plan and economic feasibility analysis in the future.

A Study on Railway Transportation Business Cost Estimation & Decision Supporting Methods using Simulation Data (시뮬레이션을 활용한 철도교통사업 비용 추산 및 의사결정 지원 방법 연구)

  • Chang, Suk;Nam, Do Woo;Sim, Jeong Hwan;Kim, Dong Hee
    • Journal of the Korea Society for Simulation
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    • v.29 no.4
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    • pp.85-94
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    • 2020
  • In determining the feasibility of planning and launching railway transportation projects, various decision-making processes are essentially required. LCC(Life Cycle Cost) value including total construction cost and operation cost is estimated in approximation Model with rough guideline. In this study, modeling and simulation-based analysis method is proposed to support the decision making process of railroad transportation and derivation of LCC. Firstly, cost analysis model was constructed by collecting various existing rail transportation business data to enable analyze based on numerical data, and the result were analyzed by DOE(Design Of Experiments) and RSM (Response Surface Method) simulation. Professional commercial software tools were used for effective model construction and simulation. In order to verify the research results, the actual railroad transportation projects were selected, and the results of the analysis were compared.

A Study on the Life Cycle Cost Analysis of Light Railroad Transit Bridges (경량전철 교량의 생애주기비용 분석에 관한 연구)

  • Lee, Du-Heon;Kim, Kyoon-Tai;An, Dong-Geun;Jun, Jin-Taek;Han, Choong-Hee
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2006.11a
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    • pp.384-389
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    • 2006
  • The needs for Light Railroad Transit(LRT) have been increased due to the heavy traffic congestions in large cities like Seoul, Korea. Korean government is seeking the LRT system development (including planning, designing, construction, and maintenance and operations) in terms of public-private-partnership (PPP). At the private sector side, it is crucial to estimate the life cycle cost (LCC) to project the cash flow during the O&M period. Since the most construction and O&M cost of LRT project is at the bridge construction, a cost analysis model and a cost breakdown structures (CBS) on LRT bridges are discussed through in depth literature reviews. Construction and maintenance cost of bridges are collected and analyzed. LCC is analyzed by types of bridge superstructures and historical data of repair and rehabilitation (R&R) is investigated. There have been scarce number of LCC analysis on railway bridges. This research delivers a well-defined CBS and maintenance cost data, which will be a great benefit to the systematic maintenance strategy development for railroad bridges.

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A Comparison Analysis of Life Cycle Cost (LCC) of Pumps - In the Focus on Comparison of Excellent and General Products in Water Industry - (Pump의 생애주기 비용(LCC) 비교 분석 - 물산업 우수제품과 일반제품의 비교를 중심으로 -)

  • Park, Woopyung;Choi, Yong;Jeon, Si Young;Kim, Jinho;Kang, Seongmi
    • Korean Journal of Construction Engineering and Management
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    • v.23 no.3
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    • pp.66-73
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    • 2022
  • In order to induce users to purchase excellent products in the water industry that satisfy the technical standards of excellent products, in this study, it is to present the advantages of the cost aspect of the pumps as the objective basis. It will be to promote technology development of domestic water companies and to create a virtuous cycle structure in the water industry. In order to present an objective basis for the merits in terms of cost, an economic evaluation was conducted through life cycle cost analysis. For the LCC analysis, initial cost (pump cost and installation cost), operation cost (energy cost and maintenance cost) and demolition cost (disposal cost and residual value) are searched and calculated. As the results of comparison on two capacity of pumps, the energy cost of the excellent pump is 212 million KRW lower than the that of general pump in the large pump. The cost of excellent pump was 17 million KRW lower than that of general pump in small capacity pump. As the results of sensibility test, if the product is developed in the direction of improving pump efficiency and increasing the replacement cycle of consumables, it is predicted that the effect on LCC will be large.

A Linkage Method for the Life Cycle Cost Breakdown Structure through an Analysis of Boundary Conditions (경계조건 분석을 통한 LCCBS 연계방안)

  • Jeong, Jae-Hyuk;Kim, Tae-Hui
    • Journal of the Korea Institute of Building Construction
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    • v.13 no.4
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    • pp.321-332
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    • 2013
  • Costs and expenses are intertwined and incurred throughout an entire construction project, even from the pre-construction phase, and each phase has a different impact on the life cycle cost (LCC). However, the cost breakdown structure (CBS) is different in each phase of a building construction project, which makes it hard to reasonably calculate construction cost. For this reason, the boundary conditions were analyzed in this study based on the life cycle cost break structure (LCCBS). In addition, breakdown factors were analyzed based on the boundary conditions to derive a linkage method. The validity of the linkage method was verified through application to actual construction projects. Through the analysis, it was found that the problem of items being left out was reduced by more than 97.2 percent, and the work was done an average of 6 hours faster compared to the conventional method. It is expected that by applying the new LCC system, LCC will be both reduced and calculated in a more efficient manner.

Characteristic Analysis of LCC Type High Frequency Resonant Inverter using ZVS (ZVS-LCC형 고주파 공진 인버터의 특성해석)

  • 서철식;김동희;노채균;남승식;변영복;이봉섭
    • The Transactions of the Korean Institute of Power Electronics
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    • v.4 no.4
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    • pp.311-317
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    • 1999
  • In this paper, the resonant inverter of SEPP-LCC type is proposed and described the operating principle. As adding t two capacitors in the switching devices in parallel. the proposed inverter can reduce switching losses. noise and voltage s stress at Turn-on and Turn-off. The analysis of the proposed circuit are described by using the normalized parameters. The data of design are got by the characteristic values and an example of the design's method is proposed. In addition. t the justification of theoretical analysis is verified by comparing to the experimental waveforms.

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An Analysis on Cost Factor Reduction of Life Cycle for High Speed Train(KTX-1) Based on the Maintenance Information (유지보수정보를 활용한 고속철도차량(KTX-1) 수명주기비용 요소절감 분석)

  • Kim, Jae-Moon;Kim, Yang-Su;Chang, Chin-Young;Lee, Jong-Sung
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.2169-2170
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    • 2011
  • This paper presents about the analysis on cost factor reduction using the life cycle cost model for motor block in the KTX-1. Until now, most life cycle cost of the system as a whole that has been studied. but in case of railway industry part, LCC studies are needed on the subsystem like a propulsion control system because subsystems are developed continuously localization. Therefore, In this paper presents cost breakdown structure for life cycle cost (LCC) estimation for localization development of propulsion control system (Motor Block) in high speed railway vehicle (KTX-1). Also to analysis LCC on motor block, it was analyzed physical breakdown structure (PBS) and preventive cost on propulsion control system in view of maintenance cost. Based on this, we describe life cycle cost on motor block of KTX-1.

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Probability- based Life Cycle Cost Analysis of Railroad Structures (확률적 방법에 의한 철도시설물의 LCC 분석)

  • Sho Byung-Choon;Choi Young-Min;Cho Sun-Kyu;Shin Kyung-Chul;Jung Jae-Dong
    • Proceedings of the KSR Conference
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    • 2004.10a
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    • pp.971-976
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    • 2004
  • The management of railroad structures is more difficult and complicate because there are many structures such as rail, bridge, tunnel, station, and so on. Therefore, LCC(Life Cycle Cost) analysis of railroad structures as public infrastructure must contain a maintenance cost as well as an initial cost in order to make a more effective management during the life cycle on the design phase. This paper presents a cost classification scheme considering user costs such as value of delayed time of passenger and freight. Also, in this study it is developed a probabilistic life cycle cost(PLCC) analysis model of railroad structures taking into account uncertainties and variations of input variables in order to analyze LCC. It may be stated that the model proposed in this study can greatly contribute to the making optimal decision, the estimate of the maintenance cost and the allocate of budget in the project of railroad structures.

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The Effect of HVDC#3 on Jeju Power System (제주 HVDC#3 영향 분석)

  • Park, Jung-Soo;Jung, Hong-Ju;Han, Young-Seong;Kim, Rae-Young;Chung, Chung-Choo
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.12
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    • pp.2196-2201
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    • 2011
  • According to the 5th national plan for electric power demand and supply, the 3rd HVDC link will be installed between KEPCO and Jeju Island system and go into operation in June, 2016. However, if it adopt LCC HVDC, Jeju power system could be in voltage instable condition. In order to solve the problem, we propose the application of VSC HVDC to the 3rd HVDC project. In the past, VSC HVDC has many disadvantages such as, inefficiency in conversion, size limit, and expensiveness, compared to LCC HVDC. Recently, the new technologies and the demand for renewable energy interconnection are leading a large growth in VSC HVDC market. In this paper, we will introduce the technical and market trends of VSC HVDC and power system stability analysis results for Jeju power system having LCC and VSC HVDCs.

An Analysis of Cartographic Materials Area in LCC and Some Suggestions on Their Applicable Principles into KDC (LCC 지도자료 분류의 특성과 KDC에서의 적용 방안)

  • Lee, Chang-Soo
    • Journal of Korean Library and Information Science Society
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    • v.38 no.3
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    • pp.161-181
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    • 2007
  • This study examined the changes, development and characteristics of the cartographic materials field in LCC as a suggestion of an ideal classification scheme which is necessary for classily the cartographic materials in libraries. The main purpose this study is to suggest how to apply the examination results to the related subject field in KDC focused on the integration and subdivision of area table and developing subject subdivision table.

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