• KIEAE Journal
• /
• 제16권5호
• /
• pp.39-45
• /
• 2016

Purpose: The purpose of this study is to analyze the energy saving and cost benefit analysis of the Low-income Energy Efficiency Treatment Program supported by KOREF(Korea Energy Foundation). This program was launched in 2007 and performs building energy retrofit for the low-income and energy poverty houses. Method: Energy simulation and cost benefit analysis were accomplished for the low-income detached houses. The structure of detached house was a lot og block structure, wood frame (single glass) and concrete roof. Baseline model of the low-income detached houses was proposed. Result: Annual heating energy consumptions were decreased by about 3.2% with the window system replacement(Case 1), 9.3% with reinforcement of insulation(Case2), and 12.5% with both(Case 3) compared to those of baseline model. The construction cost will be recouped within 5 years for the Case 1, 3 years for the Case 2, and 3 years for the Case 3. Case 3 was the most cost beneficient construction method in the analyzed cases in this study.

• 한국농촌건축학회논문집
• /
• 제19권2호
• /
• pp.9-16
• /
• 2017

The study analyzed the heat losses and the building energy efficiency grade by the energy simulation using the ENERGY# and ECO2 programs for the three types of Standard design of rural houses. It was calculated the energy efficiency rating by the ECO2 program for the rural housing standard design, and the energy demand and the energy consumption by each factor were compared and analyzed. And it analyzed energy consumption by element of each house by ENERGY # program. As a result, first in the evaluation of the energy efficiency grade of buildings by the ECO2 program, the rating for primary energy requirement for the housing newly built by the standard design of rural house is expected to range from 2 to 4 with 189.3 to $238.7kWh/m^2.a$. Second, the energy loss of each part of standard design of rural housing occurs in the order of ventilation 39%, window 33%, outer wall 14%, roof 9%, bottom 5%, and energy loss through ventilation and window occurs more than 70%. Third, the most beneficial effects on the energy efficiency grade is obtained the lowest grade of all three types by 2 when the lowering of the window and door heat transmission rate and the lowering of the light density, and the heat exchange ventilation device is not installed. Fourth, in the standard design of rural housing, the energy demand is occupied by heating > hot water > lighting order, and the order of the weight is changed in order of heating > lighting > ventilation > hot water. Fifth, building energy efficiency assessment system needs to establish policy for fixing rural housing energy as a practical device to ensure energy performance and quality.

• 한국신재생에너지학회:학술대회논문집
• /
• 한국신재생에너지학회 2009년도 춘계학술대회 논문집
• /
• pp.220-223
• /
• 2009

Tidal power plants such as Shihwa, Garorim and so on are under construction or planned to construct in Korea. However it can be estimated that the inappropriate community assistant program for tidal power plant is applied because tidal energy is imposed on a new and renewable energy criterion in Korea. Therefore in this paper, the optimum funding and region boundaries of community assistant program for tidal power plants are derived in order to improve beneficial effects of the community assistant program for tidal power plants in Korea.

• 한국추진공학회:학술대회논문집
• /
• 한국추진공학회 2010년도 제35회 추계학술대회논문집
• /
• pp.93-97
• /
• 2010

액체로켓엔진 단계식 연소 사이클에 대한 에너지 발란스 프로그램을 개발하였다. 엔진을 추력실, 터보펌프, 터빈, 예연소기, 공급계 부품 등으로 모듈화 하여 각 모듈 프로그램을 제어하는 방식을 사용하였다. 이를 통해 에너지, 질유량, 압력의 균형을 맞추었으며 대표적인 단계식 연소 사이클인 스페이스 셔틀 메인 엔진의 자료를 바탕으로 비교 검증하였다.

• Bulletin of the Korean Chemical Society
• /
• 제34권4호
• /
• pp.1195-1198
• /
• 2013

Nickel hexacyanoferrate supported palladium nanoparticles (Pd-NiHCF NPs) were synthesized and studied for oxygen reduction reactions in direct methanol fuel cell. The NiHCF support was readily synthesized by a comixing of $Ni(OCOCH_3)_2$ and equimolar $K_3[Fe(CN)_6]$ solution into DI water under rigorous stirring. After the preparation of NiHCF support, Pd NPs were loaded on NiHCF via L-ascorbic acid reduction method at $80^{\circ}C$. Pd-NiHCF NPs were electrochemically active for oxygen reduction reaction in 0.1 M $HClO_4$ solution. X-ray absorption near edge structure analysis was conducted to measure the white line intensity of Pd-NiHCF to verify the OH adsorption. As a comparison, carbon supported Pd NPs exhibited same white line intensity. This study provides a general synthetic approach to easily load Pd NPs on porous coordination polymers such as NiHCF and can provide further light to load Pd based alloy NPs on NiHCF framework.

• 대한공업교육학회지
• /
• 제37권2호
• /
• pp.161-179
• /
• 2012

이 연구의 목적은 중학교 창의적 체험활동을 위한 '에너지 교육' 수업 자료를 개발하는 데에 있다. 연구의 대상은 대구의 H 중학교 2학년 남학생 38명을 대상으로 하였다. 중학교 창의적 체험활동을 위한 '에너지 교육' 수업 자료 개발은 준비, 개발, 개선 단계의 세 단계로 이루어진다. 각 단계별 내용은 다음과 같다. 준비 단계는 수업 자료의 개발을 위해 에너지 교육 프로그램 및 관련 문헌을 연구하고 자료를 수집하였다. 개발 단계는 목표 설정, 학습지도안 설계, 수업 자료 제작, 평가 자료 개발의 구성 단계에 따라 수업 자료를 개발하였다. 개선 단계에서는 (1) 전문가에 의한 타당도 검증, (2) 학생들에 의한 예비 시험과 현장 시험을 실행하여 '에너지 교육' 수업 자료를 수정 보완하였다. 개발한 '에너지 교육' 수업 자료를 H중학교 창의적 체험활동 시간에 적용한 결과 학생들은 창의적 체험활동 시간에 '에너지 교육'을 하는 것에 대해 65% 이상의 학생이 긍정적인 대답을 하였다.

• 한국태양에너지학회 논문집
• /
• 제24권3호
• /
• pp.1-7
• /
• 2004

Using WAsP, which is PC-program for the vertical and horizontal extrapolation of wind data, annual energy production as well as wind energy density has been predicted for Haengwon wind farm in Jeju island. The predicted results were compared with real data derived from wind turbines in Haengwon wind farm. As the results, in order to produce more electric power, new wind turbines should be located along coastal line, which has comparatively high wind energy density. Also, the roughness length should be inputted to the Map Editor program for better agreement with real annual energy production.

• 한국초등과학교육학회지:초등과학교육
• /
• 제40권4호
• /
• pp.498-509
• /
• 2021

본 연구에서는 수력에너지에 관한 융합인재교육 프로그램을 개발하고 초등학생들에게 적용하여 에 너지소양과 창의적 문제해결력에 미치는 영향을 알아보고자 하였다. 이를 위하여 초등학교 6학년 학생 29명을 대상으로 연구를 실시하였고, 에너지소양과 창의적 문제해결력에 관한 사전·사후 검사 결과를 분석하였다. 본 연구의 결과는 다음과 같다. 첫째, 수력에너지에 관한 융합인재교육 프로그램은 초등학생들의 에너지소양에 긍정적인 영향을 주었다. 둘째, 수력에너지에 관한 융합인재교육 프로그램은 초등학생들의 창의적 문제해결력에 긍정적인 영향을 미쳤다. 셋째, 수력에너지에 관한 융합인재교육 프로그램을 마친 후, 학생들은 에너지 및 과학에 대한 관심 및 흥미가 높아졌고, 일상생활과 연계하려는 태도를 가지게 되었다. 융합인재교육 프로그램을 통해 학생 중심 수업으로 학생들이 스스로 문제 해결 계획을 수립하여 수력에너지를 발생시키고, 이를 활용해보는 과정에서 의미 있는 성과를 거둔 것으로 보인다.

• 한국수소및신에너지학회논문집
• /
• 제21권3호
• /
• pp.241-247
• /
• 2010

An Energy Efficiency Resource Standards (EERS) is a simple, market-based mechanism to encourage more efficient generation, transmission, and use of electricity, natural gas and heat. An EERS consists of electric, gas and/or heating energy savings targets for utilities, often with flexibility to achieve the target through a market-based trading system. In this paper, we make persons acquainted with EERS programs of foreign countries in these days. And we analyze domestic energy demand side management (DSM) programs in order to introduce an EERS program into the country successfully. Energy efficiency potential calculated in 2007 is one of the important factors for establishing an EERS program domestically. This study may provide basic data to set the amount of energy saving when an EERS program would be phased in.

• 한국태양에너지학회 논문집
• /
• 제40권3호
• /
• pp.33-42
• /
• 2020

Operational energy is the energy that is used during the occupancy stage of building life cycle. It is associated with relatively longer proportion of infrastructure's service life and can constitute 80-90% of the total energy. Assessing the energy use in buildings is essential since they are significant contributors to energy demand. In this regard, energy performance of buildings has become the focus of many regulations. This paper aimed to review the regulations about the energy performance of buildings during their operational stage in Korea. For energy efficient operation program for existing buildings, governments should implement policies and support voluntary programs that rely on collecting and managing building performance data and using this data to inform public and private-sector operation and maintenance strategies. Implementing these policies and programs requires tools and processes for collecting, curating, managing, analyzing, and publishing this data. Energy assessment tool, that is a data resource management tool that enables to assess energy use across the entire portfolio of buildings, is also required.