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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Energy Engineering
Journal Basic Information
Journal DOI :
The Korea Society for Energy Engineering
Editor in Chief :
Volume & Issues
Volume 22, Issue 4 - Dec 2013
Volume 22, Issue 3 - Sep 2013
Volume 22, Issue 2 - Jun 2013
Volume 22, Issue 1 - Mar 2013
Selecting the target year
Estimation of residential electricity demand function using cross-section data
Lim, Seul-Ye ; Lim, Kyoung-Min ; Yoo, Seung-Hoon ;
Journal of Energy Engineering, volume 22, issue 1, 2013, Pages 1~7
DOI : 10.5855/ENERGY.2013.22.1.001
This paper attempts to estimate the residential electricity demand function, using survey data of 521 households in Korea. As the residential electricity demand function provides us information on the pattern of consumer's electricity consumption, it can be usefully utilized in predicting the impact of policy variables such as electricity price and forecasting electricity demands. We apply least absolute deviation(LAD) estimation as a robust approach to estimating parameters. The results showed that price and income elasticities are -0.68 and 0.14 respectively, and statistically significant at the 10% levels. The price and income elasticities portray that residential electricity is price- and income-inelastic. This implies that the residential electricity is indispensable goods to human-being's life, thus the residential electricity demand would not be promptly adjusted to responding to price and/or income change.
Numerical Evaluation of the Cooling Performance of a Core Catcher Test Facility
Lee, Dong Hun ; Park, Ik Kyu ; Yoon, Han Young ; Ha, Kwang Soon ; Jeong, Jae Jun ;
Journal of Energy Engineering, volume 22, issue 1, 2013, Pages 8~16
DOI : 10.5855/ENERGY.2013.22.1.008
A core catcher is considered as a promising engineered system to stabilize the molten corium in the containment during a postulated severe accident in a nuclear power plant. Conceptually, the core catcher consists of a carbon steel body, sacrificial material, protection material, and engineered cooling channel. The cooling capacity of the engineered cooling channel should be guaranteed to remove the decay heat of the molten corium. The flow in ex-vessel core catcher is a combined problem of a two-phase flow in the engineered cooling channel and a single-phase natural circulation in the whole core catcher system. In this study, the analysis of the test facility for the core catcher using the CUPID code, which is a three-dimensional thermal-hydraulic code for the simulation of two-phase flows, was carried out to evaluate its cooling capacity.
The Effects of Coal Thermal Power Plant Exports on the National Economy
Jin, Se-Jun ; Yoo, Seung-Hoon ;
Journal of Energy Engineering, volume 22, issue 1, 2013, Pages 17~27
DOI : 10.5855/ENERGY.2013.22.1.017
Korean domestic electricity market is saturated through trying to find ways to overcome the limitations of the domestic electricity industry with overseas electricity markets. Korean electricity industry in the overseas market in order to pursue continuous growth, competitive and aggressive investment in overseas market is promoting. This paper attempts to apply input-output analysis to estimate the role of coal thermal power plant sector exports national economy. More specifically, this study shows what national economy effect of production-inducing effect, value-added inducing effect, and employment-inducing effect are explored with demand-driven model. After define coal thermal power plant sector what small sized of Input-Output table 168 sectors among 17 sectors, this study pays particular and close attention to coal thermal power plant sector by taking the sector as exogenous specification and then investigating economic impacts of it. This study uses coal thermal power plant exportation case of Vietnam project, production-inducing effect, value-added inducing effect, and employment-inducing effect are 2,853 billion won, 973 billion won and 14,761 persons, respectively.
Suggestion of the Analysis Model and Verification on Rotating Flow in Stirred Tanks Using CFD
Hwang, Seung Sik ; Yong, Cho Hwan ; Choi, Gyuhong ; Shin, Dohghoon ; Chung, Tae Yong ;
Journal of Energy Engineering, volume 22, issue 1, 2013, Pages 28~37
DOI : 10.5855/ENERGY.2013.22.1.028
Stirred tank is widely used in various industries for mixing operations and chemical reactions for single- or multi-phase fluid systems. For designing agitator of high performance, quantity data of internal flow characteristics influenced by mixing performance are definitely confirmed but quantity analysis about the transient flow characteristics of complicate structure is recognized as difficult problem in the present. In this study, two models of commercial CFD code Fluent 6.3 used to propose suitable for the tank analysis. Agitation of Stirred tank is analyzed using a mixed model and the flow in the stirred tank is analyzed using a standard k-
model. Multiple reference frame(MRF) and Sliding mesh(SM), the analysis techniques were used For compare a result of CFD with a visualization experiment result, to grasp internal flow and mixing characteristic in stirred tank and to present fundamental analysis method.
Development of Bottom-up model for Residential Energy Consumption by Use
Lim, Ki Choo ;
Journal of Energy Engineering, volume 22, issue 1, 2013, Pages 38~43
DOI : 10.5855/ENERGY.2013.22.1.038
There was a dire need to compile data about energy consumption data by use to analyze residential energy consumption patterns relating to changes in lifestyles, or changes in life behavior. Accordingly, bottom-up model for residential energy consumption by residential use was developed by life behavior classification in an attempt to analyze energy consumption. This paper multiplied each appliance's running times by each appliance by life behavior and built a residential bottoms-up model to figure out the energy consumption of each household. The uses by life behavior were broken down into lighting, heating, cooling, entertainment, obtaining information, hygiene, and cooking.
Thermal Characteristics of Cross-flow Small Scale Heat Exchanger
Kum, Sungmin ; Yu, Byeonghun ; Rhee, Kwan-Seok ; Lee, Seungro ;
Journal of Energy Engineering, volume 22, issue 1, 2013, Pages 44~50
DOI : 10.5855/ENERGY.2013.22.1.044
This study was experimentally investigated NOx and CO emissions characteristics with various equivalence ratios using premixed type of burner installed small heat exchanger. The effectiveness of heat exchanger and the entropy generation number were also calculated. As results, the heat transfer rate increases with increasing equivalence ratio due to increase the flame temperature. According to the emission characteristics and the effectiveness, the optimal operating equivalence ratio is 0.75 in the range of this experiment. Consequently, the area of the heat exchanger should be increased to reduce the entropy generation number and to increase the effectiveness.
A Study on the Comparison of Simulation for Heat Loss According to the Installation of Windows for Openings in External Wall of One Side Corridor Type Apartments
Kim, Dae-Won ; Chung, Kwang-Seop ; Kim, Young-Il ; Kim, Sung-Min ;
Journal of Energy Engineering, volume 22, issue 1, 2013, Pages 51~57
DOI : 10.5855/ENERGY.2013.22.1.051
As energy becomes an important source of power for national competitive force, not only Government administrations but also private sectors are striving to save energy. The purpose of this study is to compare and evaluate energy consumption of the corridor with and without window when improving the energy environment by installing door and window on the open area of entrance for one-side corridor type apartment. The energy usage was examined through this improvement process and the energy consumption amount was compared and analyzed by simulation before and after the installation. It is desired for this study to contribute to the government's green remodeling project.
Commercialization and Research Trends of Next Generation Power Devices SiC/GaN
Cho, Mann ; Koo, Young-Duk ;
Journal of Energy Engineering, volume 22, issue 1, 2013, Pages 58~81
DOI : 10.5855/ENERGY.2013.22.1.058
Recently, the technological progress in manufacturing power devices based on wide bandgap materials, for example, silicon carbide(SiC) or gallium nitride(GaN), has resulted in a significant improvement of the operating-voltage range and switching speed and/or specific on resistance compared with silicon power devices. This paper will give an overview of the status on The Next generation Power Devices such as SiC/GaN with a focus on commercialization and research.