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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
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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 kerosene demand function using time series data
Jeong, Dong-Won ; Hwang, Byoung-Soh ; Yoo, Seung-Hoon ;
Journal of Energy Engineering, volume 22, issue 3, 2013, Pages 245~249
DOI : 10.5855/ENERGY.2013.22.3.245
This paper attempts to estimate the kerosene demand function in Korea over the period 1981-2012. As the kerosene demand function provides us information on the pattern of consumer`s kerosene consumption, it can be usefully utilized in predicting the impact of policy variables such as kerosene price and forecasting the demand for kerosene. We apply least absolute deviations and least median squares estimation methods as a robust approach to estimating the parameters of the kerosene demand function. The results show that short-run price and income elasticities of the kerosene demand are estimated to be -0.468 and 0.409, respectively. They are statisitically significant at the 1% level. The short-run price and income elasticities portray that demand for kerosene is price- and income-inelastic. This implies that the kerosene is indispensable goods to human-being`s life, thus the kerosene demand would not be promptly adjusted to responding to price and/or income change. However, long-run price and income elasticities reveal that the demand for kerosene is price- and income-elastic in the long-run.
Trends of Biorefinery as Systems for Bioenergy/Biochemicals Co-Products
Kim, Seong Ho ; Kim, Kil-Houn ;
Journal of Energy Engineering, volume 22, issue 3, 2013, Pages 250~261
DOI : 10.5855/ENERGY.2013.22.3.250
In order to overcome the 21st century`s challenges such as national energy supply security, global warming, and resource depletion, we are struggling to accelerate the paradigm shift in our life style from fossil fuel-based economy to biomass-based economy. In the context of sustainable bioeconomy revitalization, we comprehensively review the development status of the biorefinery as a system for bioenergy/biochemicals co-products on the basis of the various categories according to six criteria.
A Study on the Effects of Residential Energy Consumer`s Lifestyle on Energy Conservation Behavior
Lim, Ki Choo ;
Journal of Energy Engineering, volume 22, issue 3, 2013, Pages 262~269
DOI : 10.5855/ENERGY.2013.22.3.262
The residential energy consumption is intimately related with lifestyle of consumers. Therefore, this research suggests the mechanism for the effects of consumer lifestyle on consumer behavior. Specifically, the mediators are imposed of cost perception, propensity for environmental protection and energy conservation-conscious. Also, the lifestyle is composed of the over-consumption, life-centric, life-satisfaction, conservation- conscious and conservation-active type. In results, there are positive relationship between the life-satisfaction, conservation-conscious and conservation-active lifestyle and the propensity for environmental protection, cost perception. Both the cost perception and the propensity for environmental protection are positively related with the conservation- conscious. And positive relationship are appeared between the conservation-conscious and the energy conservation behavior.
The external benefit of combustible waste-to-energy: A contingent valuation study
Lim, Seul-Ye ; Kim, Ho-Young ; Yoo, Seung-Hoon ;
Journal of Energy Engineering, volume 22, issue 3, 2013, Pages 270~282
DOI : 10.5855/ENERGY.2013.22.3.270
Combustible waste into energy policy is an effective method to respond to climate change and depletion of fossil fuels. Combustible waste into energy is the process of generating energy in the form of electricity and/or heat from the combustible waste such as vinyl, paper and plastic. This study tries to estimate the external benefit of enhancing the ratio of combustible waste into energy to primary energy from 1.89% to 5% using contingent valuation(CV) method. To this end, we report the results from a CV survey to elicit the willingness to pay (WTP) for combustible waste into energy. A CV survey of 500 households was conducted in the Seoul by using person-to-person interviews. Thus, the procedures of applying and the findings from the one-and-one-half bounded dichotomous choice spike model used to deal with the zero WTP responses are provided in the paper. The results show that the average WTP is estimated to be 2,724 won per household per month and statistically significant at the 5% level. Expanding the value to the Seoul gives us an aggregate value of 13.7 billion won per year.
Cost Scaling Factor according to Power Plant Capacity Change
Ha, Gak-Hyeon ; Kim, Sung-Hwan ;
Journal of Energy Engineering, volume 22, issue 3, 2013, Pages 283~286
DOI : 10.5855/ENERGY.2013.22.3.283
The existing nuclear power plants have been often redesigned by increasing or decreasing electrical power without changing design concept by the request of utility, economic factors or other factors. When the cost of power plant equipment redesigned by changing reactor power and electrical power is estimated, if its quotation is not available in the market place, cost scaling factor(CSF) applies to the cost of existing plant equipment and then the new-designed equipment cost can be calculated. In this paper, we review CSFs according to plant capacity change cases in United State DOE, EPRI, ABB, SWEC and introduce the results applied to Korean PWR 1000MWe and 1400MWe.
A study on the reliability enhancement of Ultrasonic water treatment system to boiler
Kim, Dae-Ryong ; Lee, Keun-Oh ;
Journal of Energy Engineering, volume 22, issue 3, 2013, Pages 287~293
DOI : 10.5855/ENERGY.2013.22.3.287
This study was carried out to diminish the formation of scale in boilers which is one of the defect elements when they are operating. The defect relating to scale can cause a fatal impact on the explosion of boilers due to the overheating of their tubes, or it can affect the flow of water inside boilers with its bad circulation and result in a disparity of water inside the equipment. Heat transfer in the scale is low comparing to the boiler material, so it can lead to energy losses and has also impact on the global warming. In 2005, the Korean government introduced a system which requires boiler users to install the equipment which can prevent or eliminate the formation of scale to improve the management of water quality in boilers. The study on the techniques for preventing or eliminating the formation of scale started in 1821 and since then subsequently there have been lots of similar studies. The first one was about the scale reduction using potato starch. Since an ultrasonic scale preventer developed by a scientist from a Russian acoustic institute was introduced in1993, a variety of equipment of this kind have been disseminated in Korea. There has been a need to demonstrate the condition for the best performances of such equipment. Boilers are mostly composed of the main body and 288 the tube with a circular curved surface. I carried out a demonstration study on a circular tube which affects the scale defect the most among the boiler components. As a result of it, I found out the fact that the ultrasonic wave needs to reach a certain level of sound pressure and frequency to affect the formation of scale.
A Study on safety enhancement of Medium and small boilers
Kim, Dae-Ryong ; Lee, Keun-Oh ;
Journal of Energy Engineering, volume 22, issue 3, 2013, Pages 294~301
DOI : 10.5855/ENERGY.2013.22.3.294
The accidents related to boilers are caused by defects with high risk which can lead to the explosion of the equipment. The number of boiler accidents from 1979 to 2006 is 100 andthe casualties totaled 379, and the scale of accidents has been growing larger every year. The analysis has found that the number of accidents caused by carelessness in management is 59, 72% of total 82 cases and 18by low level of water. The analysis of accidents in foreign countries showed a similar result. From the past till today most of the accidents have been resulted from bad handlingand maintenance. The analysis of accidents for the inspected boilers also showed that the major cause of the accidents was bad handling and maintenance of automatic controllers, safety devices, etc. And in the large-scale explosive accidents, the number one cause of them was the low level of water.
Optimized Design of Piping Array in Solar Hot Water System
Shin, J.C. ;
Journal of Energy Engineering, volume 22, issue 3, 2013, Pages 302~306
DOI : 10.5855/ENERGY.2013.22.3.302
A simple method for balancing flow rates in arrays of parallel connected flat plate solar collectors has been developed. The method is based on a computer program which solves for the flow rate through each of the collectors in a reverse return plumbed array. The analysis uses conventional "K-value" techniques and assumes the effects of density variations within the system to to be negligible. It has been found that by appropriately sizing the inlet and outlet manifolds, flow maldistribution can be nearly eliminated without resorting to expensive or complicated balancing techniques.
The economic benefit of combustible waste into energy: A contingent valuation study
Jang, J.H. ; Ahn, J. ; Shin, D.H. ; Chung, T.Y. ;
Journal of Energy Engineering, volume 22, issue 3, 2013, Pages 307~311
DOI : 10.5855/ENERGY.2013.22.3.307
Heating and hot water has accounted for 68% of Korea`s household energy usage. Boiler makes up the bulk of the heating and hot water production. Hence a highly efficient boiler is needed in order to reduce energy consumption. A condensing boiler that recovers latent heat is known to be highly efficient. However, it is expensive and takes more space to necessitate research for improvement. In the present study, we investigated condensation heat transfer of a surface roughened by etching treatment. The etched plate showed 9.2% increase in heat transfer compared to original plate.
An Analysis on the Advancement of Korean Energy Technology Innovation System
Park, Jung-Gu ; Yoon, Seong-Pil ; Park, Sung-Hwan ;
Journal of Energy Engineering, volume 22, issue 3, 2013, Pages 312~325
DOI : 10.5855/ENERGY.2013.22.3.312
This article analyzes the lock-in factors and their advancement direction of Korean energy innovation system(EIS), using case-study methodology. As the lock-in factors, which have been structural and complicated ones in the developing process of Korean EIS, are postulated government policies, market, industrial network, and demand condition. The lock-in phenomena result from connecting and conflicting incompletely among government policies, competing and controlling oligopolistically in market, constructing insufficiently in intra-industrial value-chain, and lowering in demand efficiency. To cope with these lock-in structure, connection among government policies, activation in market competition, coordination of industrial structure for added values, and uprading in energy efficiency are needed.