• Environmental and Resource Economics Review
• /
• v.31 no.4
• /
• pp.825-848
• /
• 2022

This paper analyzed the factors for increasing energy consumption in the domestic manufacturing sector using the LMDI (Log mean division index) decomposition method for the period from 1999 to 2019. Among the LMDI decomposition analysis methods, both additive and multiplicative factor decomposition methods were used. in this analysis. According to the result of the analysis, the factor that increased energy consumption in the domestic manufacturing industry was the production effect, and the structure effect and intensity effect were found to be the factors that decreased energy consumption. In particular, the reduction of energy consumption due to the structure effect was greater than that of energy consumption effect due to the intensity effect. By period, it can be seen that energy consumption increased rapidly due to the production effect until 2011, but after that, the increase in energy consumption due to the production effect slowed down. On the other hand, after that, the energy reduction effect due to the structure effect and the intensity effect became prominent. In order to save energy in the manufacturing sector in the future, energy diagnosis and management through EMS (Energy management system) and FEMS (Factory energy management system) are more necessary. In addition, restructuring into a low-energy consumption industry seems more necessary.

• Journal of the Korean Society for Railway
• /
• v.14 no.5
• /
• pp.425-432
• /
• 2011

Concrete was identified as the significant GHG emission source resulting from a GHG emission analysis of railway infrastructure. An environmental assessment method (life cycle assessment; LCA) and low carbon railway infrastructure design strategy development method (ECODESISGN PILOT) were applied to develop low carbon railway infrastructure design strategies. The railway infrastructure was analyzed as a raw material intensive industry emitting large amount of greenhouse gas (GHG) at its construction stage. Therefore, in this study, it is analyzed that current status of GHG emission at its construction stage, and a method reducing GHG emission of railway infrastructure is proposed. In this study, eco-concrete, concrete aging prevention agent and a low carbon railway route decision method based on a need of low carbon railway infrastructure construction technology application for green railway development were considered.

• Journal of the Economic Geographical Society of Korea
• /
• v.24 no.4
• /
• pp.400-410
• /
• 2021

This study analyzed the determinants of carbon dioxide emissions through the expanded STIRPAT model using panel data from 16 metropolitan cities and provinces in Korea from 2000 to 2019. After testing cross-sectional dependence and coefficient heterogeneity of panel data, we performed analysis using MG, CCEMG, and AMG estimation methods reflected these characteristics. The results of analysis using the AMG estimation method are as follows. The coefficients of income, population, and energy intensity were statistically significant with a positive sign, but urbanization was statistically insignificant. Reduction of carbon dioxide emissions in Korea can be achieved through an increase in energy efficiency and sustainable economic growth. It is necessary to establish a policy that can contribute to sustainable economic growth by inducing productivity improvement through technology innovation reducing carbon dioxide emissions in the long-term as well as building a low-carbon society through active development of carbon dioxide reduction technology.

• Environmental and Resource Economics Review
• /
• v.22 no.4
• /
• pp.691-726
• /
• 2013

We develop a hybrid model which allows the change in electricity generation mix by adding the electricity-sector components of bottom-up model to the conventional CGE model. The electricity sector is represented as a sum of separate generation technologies, each of which has the form of DRTS (Decreasing Returns to Scale) production function, unlike the conventional CGE model. We compare the effects of the 30% emission reduction target using the hybrid model with those using the conventional CGE model. The cost of meeting the target is lower with the hybrid model than the conventional CGE. It is consistent with previous studies in that adding the bottom-up components to the top-down model reduces the cost of emission reduction. In an extra analysis we find that an additional regulation like RPS (Renewable Portfolio Standard) increases the cost.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 2005.05a
• /
• pp.1026-1032
• /
• 2005

지구온난화 문제의 대표적 원인 물질인 이산화탄소의 배출을 억제 하기 위해 사용할 수 있는 수단 중 하나가 탄소세이다. 탄소세가 부과되면 에너지 집약 산업인 철강 산업에 커다란 영향이 있을 것이 분명하다. 따라서 본 연구는 탄소세 부과로 인한 파급 효과를 시스템 다이내믹스(System Dynamics) 방법에 의한 시뮬레이션 모델을 이용하여 분석하고자 한다. 탄소세 부과 금액, 부과 방법, 신기술 도입을 고려한 시나리오를 설정하여 이에 따른 결과를 분석한다. 또한 에너지 가격 상승률이 다양한 폭으로 변화하였을 때 철강 산업에 미치는 영향에 대해서도 분석한다.

• Journal of the korean Society of Automotive Engineers
• /
• v.2 no.1
• /
• pp.9-20
• /
• 1980

디이젤기관의 냉시동성이 가솔린기관에 비하여 떨어지는 것은 이미 우리가 알고 있는 사실이다. 근년에는 소형트럭, 승용차, 소형건설기계 등의 분야에 있어서도 고속디이젤기관을 널리 사용하게 되었고 앞으로 디이젤연료의 중질화 및 세탄가 저하의 영향 등을 고려할 경우 시동성의 확보는 더욱 중요한 문제로 된다. 시동성에 영향을 미치는 인자 혹은 시동성개선의 방책으로서는 분 무의 착화에 직접 관련되는 것 외에 축전지의 저온특성 혹은 기관의 마찰토오크 등 여러가지에 걸쳐 있으나 이들 중에서 특히 분무의 착화에 직접 관련되는 방책에 관해서는 그것이 시동성에 미치는 영향에만 그치는 것이 아니고 시동개시직후에 있어서 배출가스, 혹은 출력성능 등에 미 치는 영향에 대해서도 함께 고려를 하여야 할 경우가 있다. 본고에 있어서는 냉시동시의 분무의 착화에 대하여 직접 관련하거나 그것을 촉진시킨다고 생각되는 몇개의 인자와 구체적인 방책을 취급하므로써 그것들이 시동성 및 시동직후의 청백연 혹은 출력성능 등에 대하여 미치는 영향에 대해서 기술하며 아래에서 취급되는 시동시의 착화를 촉진하기 위한 실제적인 인자 및 방책은 어느 것이나 기본적으로는 하나의 개념에 집약된다. 즉 그것은 연표와 효소로부터 이루어지는 연소계에 있어서 착화조건을 갖추어야함을 말할 것도 없다.

• Journal of Korea Water Resources Association
• /
• v.45 no.12
• /
• pp.1201-1211
• /
• 2012

This paper constructed the single country sequential dynamic CGE model to analyze the economic impacts of subsidizing water industry under the GHG emission abatement policy in Korea. We introduced the carbon tax to reduce the GHG emission and made two scenarios. One is to transfer the total tax revenue to household. The other is to mix the tax transfer and water industry support. Our Simulation results show that the macroeconomic effects might be positive by subsidizing water industry compared with the pure tax transfer. However, the support of water industry doesn't contribute to head for the non-energy intensive economy because it's economic activity highly depend on fossil energy and energy intensive products as intermediate demand. This means that it is important to make efforts on the cost effective measures such as energy technology progress, alternative energy development, and energy efficiency improvement in water industry against climate change policy.

• Environmental and Resource Economics Review
• /
• v.23 no.2
• /
• pp.305-330
• /
• 2014

There has been a lot of studies to identify the driving forces of energy consumption. Many of them decomposed the final energy consumption into the intensity effect, structural effect, and production effect. Those approach, however, could not consider the transformation loss during the electric power generation. Therefore, in this study, we conducted a decomposition analysis on the primary energy use basis to reflect that transformation loss. Log mean Divisia index and refined Laspeyres methods were used for the index decomposition. As results, we could find out that the difference between two approaches were definite. The intensity effect in 2011 is -0.607 times against 1981 in the final energy case, but -0.236 times in the primary energy case. The structure effect in 2011 is 0.227 times against 1981 in the final energy case, but 0.434 times in the primary energy case. Therefore, an analysis on the primary energy basis is essential when conducting a decomposition analysis.

• Environmental and Resource Economics Review
• /
• v.13 no.2
• /
• pp.271-300
• /
• 2004

We investigate the two recent simulations of the proto-type domestic carbon emission trading system in Korea and draw some policy implications. The first simulation includes the 5 electric power companies based on baseline and credit. But the second one is with the 7 energy-intensive companies based on cap and trade. The voluntary approaches in this paper revealed the instability of market equilibrium, i.e., price volatility or distortion, excess supply or demand. These phenomena stems from excess incentives to the players, asymmetric information, players' irresponsible strategic behaviors, and non acquaintance of trading system. This paper suggests the basic design for domestic carbon trading system in future and a stepwise introduction strategy for it including the incentive auction scheme, the total quantity of incentive needed, and how to finance it. Meantime, the further simulations on the various sectors based on voluntary participation must be essential for learning experiences and better policy design.

• Journal of Energy Engineering
• /
• v.27 no.3
• /
• pp.10-20
• /
• 2018

Due to cheap electricity tariff on agricultural use, electricity consumption in agricultural sector has grown dramatically. We evaluated the negative effects of the cheap electricity tariff such as electricity over-consumption, increased dependency on electricity, decreased electricity productivity, and unequal distribution of the benefit. We also estimated the effects of agricultral output growth, structural change, and electricity intensity change on sharp electricity consumption increase in agricultural sector between 1998 and 2016 using the Log Mean Divisia Index decomposition method. The findings reinforce the necessity of raising the electricity tariff for agricultural use.