Time filter

Source Type

Seoul, South Korea

Sogang University, Cottrell and Korea Southern Power Co. | Date: 2014-08-01

The embodiments described herein pertain generally to an amalgam electrode, and a producing method of the amalgam electrode, and an electrochemical reduction method of carbon dioxide using the amalgam electrode.

Jung J.-H.,Pohang University of Science and Technology | Lee U.,Korea Southern Power Co. | Kim S.-H.,Agency for Defense Development | Park S.-H.,Pukyong National University
Progress in Electromagnetics Research | Year: 2013

To cope with the energy shortage and the rising cost of the fossil fuel, many wind farms are being constructed under the supervision of Korean government along the coasts of Korean peninsula to generate clean and renewable energy. However, construction of these wind farms may cause negative e®ect on various L-band radars in operation. This paper presents the result of the micro-Doppler (MD) analysis of the in°uence of the wind turbine on the L-band radar using the point scatterer model and the radar cross section of the real turbine predicted by the method of physical optics. The simulation results obtained at three observation angles show that the range of MD occupies a considerable portion of the helicopter MD range, and thus, the operations using helicopters need to be avoided in the wind farm region, and additional radars are required for the recognition of helicopter-like objects.

Kim S.-K.,Seoul National University | Park J.-H.,Seoul National University | Lee H.-C.,Seoul National University | Park G.-P.,Seoul National University | And 3 more authors.
IEEE PES General Meeting, PES 2010 | Year: 2010

Before deregulation, th Korea Electric Power Corporation (KEPCO) had been a vertically integrated monopoly over power generation, transmission, and distribution. However, the generation competition market based on Cost based pool (CBP) began in April, 2001. The KEPCO generation department has been allocated into six independent GenCos. Before the reform of the power industry that took place in South Korea, the government had planned the electric power supply by adjusting the balance of supply and demand in the long run, and KEPCO made the decision to invest electric power equipments at the lowest cost under some constraints. However, after the deregulation, a new concept of planning the electric power supply was introduced to stabilize the supply generation. The government develops the basic plan for the long-term electricity supply and demand (BPE) and announces the BPE on a biennial basis. The BPE stipulates the electricity policy directions on supply and demand, the long-term outlook, construction plans, DSM, etc. The time horizon of the plan is 15 years. The plan for plant construction is evaluated based on the simulation result of a computer model - the Wien Automatic System Planning Program (WASP). The WASP is suitable for a monopoly structure pursuing total cost minimization. There are strong requirements for the introduction and use of analysis models for the generation mix suitable for new generation environments. We have adopted an agent based model - the Electricity Market Complex Adaptive System (EMCAS) - and was applied to the Korean electricity market base on the 3rd BEP. Our simulation results show the availability of a market based model just for the changed electricity market environment. ©2010 IEEE.

Kim J.H.,Pusan National University | Yang S.Y.,Korea Southern Power Co. | Kim G.B.,Pusan National University | Jeon C.H.,Pusan National University
Transactions of the Korean Society of Mechanical Engineers, B | Year: 2015

Circulating Fluidized Bed(CFB) combustion has the several advantages which are the fuel flexibility, the economy, the efficiency and the environment. It is necessary to apply a renewable energy to produce electricity due to the Renewable Portfolio Standard(RPS) mandates recently. So, in this study, co-combustion with a coal and a wood pellet was investigated to evaluate the combustibility and the environment as function of blending ratio of them in a Lab-scale CFB reactor. To investigate the characteristics of the co-combustion, the blending ratio which is the weight of wood pellet by the total calorific value of the supplied, was considered. Bed material was a river sand(No. 7). As increasing the blending ratio, the exhausted gas emissions such as CO, NOx, HC and SOx were decreased. But in case of wood pellet over 30%, CO, HC and SOx emission were increased. And the gas temperatures at the downstream were decreased. © 2015 The Korean Society of Mechanical Engineers.

Park Y.C.,Korea Institute of Energy Research | Jo S.-H.,Korea Institute of Energy Research | Kyung D.-H.,Korea Institute of Energy Research | Kim J.-Y.,Korea Institute of Energy Research | And 3 more authors.
Energy Procedia | Year: 2014

The ground-breaking ceremony of the10 MWe-scale dry-sorbent CO2 capture process was held in August 2012 and the construction was finished in October 2013. It was integrated with a 500 MW power plant and used a slip-stream of that, located at the Hadong coal-fired power plant (Unit #8), Korea Southern Power Company. From October 2013, Korea Institute of Energy Research (KIER), Korea Southern Power Company, and KC Cottrell have executed the test operations in order to find out the optimal operational conditions and several modification parts to achieve the target project goals of the 10 MWe-scale dry-sorbent CO2 capture technology. The dry-sorbents have been developed by KEPCO Research Institute and massively produced and supplied by TODA-ISU, which consists of 35 wt.% of active components for the CO2 sorption and 65 wt.% of supporters for the mechanical strength. The some portions of the dry-sorbents have been tested at the 0.5 MWe-scale dry-sorbent CO2 capture process in order to analyze the sorbent performance through the two-week operation campaign in June 2013. During the test operations, the 10 MWe-scale dry-sorbent CO2 capture process has been divided into four parts such as a sorbent handling part, a flue gas pre-treatment part, a main reactor part, a utility (steam, cooling water, and instrument air) part. In the sorbent handling part, the sorbent feeding system has been tested so that the sorbent has automatically fed to the reactor system and conversely fed to the sorbent silo. In the flue gas pre-treatment part, main blower, the secondary flue gas desulfurization, and the moisture control of the flue gas have been tested. In the main reactor part, the solid hold-up in the carbonation reactor, the solid circulation rate, control concept, and the reaction performance of the sorbent have been tested. In the utility part, steam supply, cooling tower operation, and instrument air compressor operation have been tested. The test operations will be done on January 2014 and the long-term continuous operations will be performed from early March 2014. We plan to continuously operate the 10 MWe-scale dry-sorbent CO2 capture process from the second quarter of this year, to analyze the economics of the dry-sorbent CO2 capture technology based on the operational results, and to finish FEED of the 300 MWe-scale dry-sorbent CO2 capture technology until the end of the third quarter of this year. © 2014 The Authors Published by Elsevier Ltd.

Discover hidden collaborations