• Title/Summary/Keyword: energy assessment

Search Result 2,824, Processing Time 0.031 seconds

Correlation Analysis on $CO_2$ Emission and Cost of Energy Resources and Life Cycle Assessment (에너지자원의 이산화탄소 배출량과 비용의 상관관계 분석과 전과정평가)

  • Kim, Heetae;Kim, Eun Chul;Ahn, Tae Kyu
    • 한국신재생에너지학회:학술대회논문집
    • /
    • 2010.06a
    • /
    • pp.153-153
    • /
    • 2010
  • The world is moving towards a post-carbon society and needs clean and renewable energy for sustainable development. There are many methodological approaches which are helping this shift based on analyzed data about energy resources and which focus on limited types of energy including liquid fossil, solid fossil, gaseous fossil, and biomass (e.g. IPCC Guidelines, ISO 14064-1, WRI Protocol, etc.). We should also consider environmental impact (e.g. greenhouse gas emissions, water use, etc.) and the economic cost of the renewable energy to make a better decision. Recently, researchers have addressed the environmental impact of new technologies which include photovoltaics, wind turbines, hydroelectric power, and biofuel. In this work, we analyze the environmental impact with a carbon emission factor to present a correlation between $CO_2$ emission and the cost of energy resources standardized by the energy output. In addition, we reviewed Life Cycle Assessment (LCA) as another methodology. Researchers who are studying energy systems have ignored the impacts of entire energy systems, e.g. the extraction and processing of fossil fuels. In power sector, the assessment should include extraction, processing, and transportation of fuels, building of power plants, production of electricity, and waste disposal. Therefore LCA could be more suitable tool for energy cost and environmental impact estimation.

  • PDF

Radiological Assessment of Environmental Impact of the IF-System Facility of the RAON

  • Lee, Cheol-Woo;Whang, Won Tae;Kim, Eun Han;Han, Moon Hee;Jeong, Hae Sun;Jeong, Sol;Lee, Sang-jin
    • Journal of Radiation Protection and Research
    • /
    • v.46 no.2
    • /
    • pp.58-65
    • /
    • 2021
  • Background: The evaluation of skyshine distribution, release of airborne radioactive nuclides, and soil activation and groundwater migration were required for radiological assessment of the impact on the environment surrounding In-Flight (IF)-system facility of the RAON (Rare isotope Accelerator complex for ON-line experiment) accelerator complex. Materials and Methods: Monte Carlo simulation by MCNPX code was used for evaluation of skyshine and activation analysis for air and soil. The concentration model was applied in the estimation of the groundwater migration of radionuclides in soil. Results and Discussion: The skyshine dose rates at 1 km from the facility were evaluated as 1.62 × 10-3 μSv·hr-1. The annual releases of 3H and 14C were calculated as 9.62 × 10-5 mg and 1.19 × 10-1 mg, respectively. The concentrations of 3H and 22Na in drinking water were estimated as 1.22 × 10-1 Bq·cm-3 and 8.25 × 10-3 Bq·cm-3, respectively. Conclusion: Radiological assessment of environmental impact on the IF-facility of RAON was performed through evaluation of skyshine dose distribution, evaluation of annual emission of long-lived radionuclides in the air and estimation of soil activation and groundwater migration of radionuclides. As a result, much lower exposure than the limit value for the public, 1 mSv·yr-1, is expected during operation of the IF-facility.

An Overview of Models for Energy Technology Assessment (에너지기술평가모형에 관한 고찰)

  • 김호탁;최기련;강희정;차재호
    • Journal of Energy Engineering
    • /
    • v.1 no.1
    • /
    • pp.111-134
    • /
    • 1992
  • Energy system models have been broadly used for the solution of the assessment of technical and economical characteristics in the national energy systems. The purpose of this study is to overview the structures, potentials and usefulness of system models for energy technology assessment. The conventional models developed so far are not aquate to analyze the energy and environmental problems simultaneously. Energy system models integrated by multiobjective programming are also reviewed and discussed in this paper to judge their usefulness and applicability in simultaneously analyzing the energy and environmental problems.

  • PDF

Design Assessment and Certification Scheme of Tidal Energy Converters (조류발전설비 설계 평가 및 인증시스템)

  • Kim, Mikum;Kim, Manneung
    • 한국신재생에너지학회:학술대회논문집
    • /
    • 2010.06a
    • /
    • pp.238.1-238.1
    • /
    • 2010
  • Researches and developments of tidal energy converters are close to commercialization stage. But, commercialization of tidal energy converters is not ready in korea. In Europe, many experts of company, laboratory and public institution involved in marine energy are active for commercialization of marine energy converters in European Marine Energy Centre. Furthermore, in IEC/TC114, standardization of technical standards for assessment and certification of tidal energy converters of each country is under discussion. Therefore, We have to prepare for commercialization, standardization and entry into the overseas market. In this study, trends of commercialization and standardization of international markets of marine energy converters are investigated and certification schemes of overseas are analyzed. We expect that this study will make contribution to establish the foundation of commercialization of tidal energy converters.

  • PDF

Development on the Assessment Model for Selection of New DSM Investment Programs using MAUT (다속성 효용이론을 이용한 신규 수요관리 투자사업 선정평가 모델 개발)

  • Park, Sang-Yong;Lee, Deok-Ki;Lee, Jeong-Tae;Lee, Sang-Seol
    • Proceedings of the SAREK Conference
    • /
    • 2008.06a
    • /
    • pp.231-236
    • /
    • 2008
  • The purpose of this study is to develop assessment model for selection of new DSM investment programs. In this research, MAUT method which find assessment value by each attributes related to selecting new DSM investment programs using utility function and integrate with structural frame was used to develop assessment model. In order to validate the usefulness of the model, assessment model was applied for actual candidate group of new DSM investment programs in natural gas domain. By utilize this assessment model to select new DSM investment programs, it is expected to minimize risk of new program launching and to maximize efficiency of DSM investment programs.

  • PDF

Performance Assessment Methodology of Energy Conservation and Efficiency with Consideration of Baseline and Target Adjustment (베이스라인 조정에 의한 에너지소비 및 원단위 목표설정과 성과평가에 관한 연구)

  • Lee, Sang-Youp
    • Journal of Environmental Policy
    • /
    • v.6 no.2
    • /
    • pp.27-45
    • /
    • 2007
  • This paper presents a method for developing the performance assessment of energy conservation and efficiency based on baseline and target adjustment approach. Energy consumption is related with output level and production structure. This paper suggests improvement for target establishment and performance assessment with regard to real output level in target year. Numerical illustrations of baseline and target adjustment method are shown different compared with the general assessment results. This study will contribute to applying the conformity assessment and Greenhouse Gas Emissions verification system.

  • PDF

SAFETY ASSESSMENT OF KOREAN NUCLEAR FACILITIES: CURRENT STATUS AND FUTURE

  • Baek, Won-Pil;Yang, Joon-Eon;Ha, Jae-Joo
    • Nuclear Engineering and Technology
    • /
    • v.41 no.4
    • /
    • pp.391-402
    • /
    • 2009
  • This paper introduces the development of safety assessment technology in Korea, focusing on the activities of the Korea Atomic Energy Research Institute in the areas of system thermal hydraulics, severe accidents and probabilistic safety assessment. In the 1970s and 1980s, safety analysis codes and methodologies were introduced from the United States, France, Canada and other developed countries along with technology related to the construction and operation of nuclear power plants. The main focus was on understanding and utilizing computer codes that were sourced from abroad up to the early 1990s, when efforts to develop domestic safety analysis codes and methodologies became active. Remarkable achievements have been made over the last 15 years in the development and application of safety analysis technologies. In addition, significant experimental work has been performed to verify the safety characteristics of reactors and fuels as well as to support the development and validation of analysis methods.

A Study on Development of New Assessment Method for the Energy Performance in G-SEED using Dynamic Building Energy Simulation Programs (동적 건물에너지 시뮬레이션을 이용한 G-SEED 에너지성능 평가지침 도입 방안에 관한 기초연구)

  • Kim, Kee Han;Chae, Chang-U;Cho, Dongwoo
    • Journal of the Architectural Institute of Korea Structure & Construction
    • /
    • v.34 no.10
    • /
    • pp.27-35
    • /
    • 2018
  • In this paper, a fundamental study for developing and introducing a new assessment method of the 'Energy Performance' in G-SEED that uses dynamic building energy simulations was conducted by comparing and analyzing the corresponding issues of domestic and foreign green building certification systems. The most significant part of the new assessment method to be developed was a development of a modeling guideline for a reference building using dynamic building energy simulations. In this paper, the composition and detailed contents of the guideline was created to comply with domestic energy codes. In addition, one of the most influential part of the result in the simulations, the 24-hour building operation schedule for a reference building, was created considering the equity with the ECO2 program that is the evaluation tool of one of the current assessment methods in the "Energy Performance". In order to improve the completeness of this guideline, it is necessary to continue the process of supplementation in the future, however, this paper is expected to be of great significance as the beginning of the research.

A Study on Planning Conditions to Improve Openness assessment in Atrium (아트리움 건축의 개방감을 상승시키는 계획조건에 관한 연구)

  • Lee, Ji-Young;Lim, Jae-Han;Jung, Jin-Ju
    • KIEAE Journal
    • /
    • v.8 no.2
    • /
    • pp.41-46
    • /
    • 2008
  • Owing to a space covered by glass, atrium is an attractive space with a possibility as an inner public space but a typical building type with a high-energy load. From the aspect of global environmental issues, to reduce energy load is an important assignment to solve. Contriving a planning guideline of an opening is considered as the most effective environment adjustment method, to offer a highly assessed amenity space and secure openness to outside, keep the energy load to a minimum, and apply the natural energy such as daylight to a maximum at the same time. Users' assessment of environment was performed by questionnaire survey, then the structure of users' assessment was analyzed and design condition was regulated by multiple regression analysis. The opening design guideline to offer a highly assessed space was proposed with concrete environment adjustment method.

A Study on the Life Cycle Energy and $CO_2$ in the Apartment Housings (공동주택의 라이프사이클 에너지와 이산화탄소 추정에 관한 연구)

  • Lee, Kang-Hee;Chae, Chang-U
    • Journal of the Korean housing association
    • /
    • v.19 no.4
    • /
    • pp.89-96
    • /
    • 2008
  • The environment has played a key role to improve the living condition and develop the industry. In building industries, we should consider the environment and mitigate the environmental affect. For mitigating the its affect, various areas of building technology have been developed and applied into filed work. In addition, the process in applying into field requires to conduct the assessment of the environmental affect and improve its applied technology. A lot of assessment methods are proposed in evaluate the building condition such as post-occupancy evaluation, life cycle management and life cycle assessment. Among these assessment methods, life cycle assessment is effectively utilized the environmental affect in building life cycle. Therefore, this paper aimed at analyzing the energy consumption and $CO_2$ emission in building life cycle, using the life cycle assessment and application of the example in apartment housing. This study shows that the maintenance and the production of building materials stage shares most of the amount of energy consumption and $CO_2$ emission and therefore plays an important role to planning the building in terms of the life cycle. Second, the other stages brings about a very small amount. It is important to decide the building shape and contents to mitigate the environmental affect in terms of material, volume, the pattern of the energy use and others.