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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Energy Engineering
Journal Basic Information
Journal DOI :
The Korea Society for Energy Engineering
Editor in Chief :
Volume & Issues
Volume 12, Issue 4 - Nov 2003
Volume 12, Issue 3 - Sep 2003
Volume 12, Issue 2 - Jun 2003
Volume 12, Issue 1 - Feb 2003
Selecting the target year
A Study on the Performance Improvement for The Coal Filing Power Station
Journal of Energy Engineering, volume 12, issue 3, 2003, Pages 165~176
In this study, the exergy analysis is conducted on the well known performance of already developed system and then compared with the efficiency of each equipment to propose optimum operation of the system. The system used in this study is 500 MW coal firing power plant. The efficiency of the boiler is 67% and the condenser is 99% by exergy analysis. The exergy consumption of the boiler was 32.95% at 100% load. The exergy consumption of the high pressure turbine and the low pressure turbine is 8.31% and 8.12%, respectively. Together with the concrete study on the object of performance revision of the low efficient development system proved in this study, if detailed exergy analysis on the operation condition of the equipments of the development system presently being operated is continued, then it is expected to help minimize the exergy consumption of relatively low efficient parts that are worn-out or miss-installed.
A Theoretical Analysis of the Acceptability of Design Stress Value for the Fuel Rod with Nonlinear Thermal Stresses
Journal of Energy Engineering, volume 12, issue 3, 2003, Pages 177~183
The purpose of this paper is to verify that the design stress value of fuel rod for the irradiation test satisfies the structural design requirement. In this structural safety analysis thermal effect is the most severe element for the safety. The thermal effects are very complicated problem to be analyzed for the structural safety in short hand. By the application of theoretical analysis, the design margin of stress which was used in this fuel rod design was verified in the conservative point of view. In the future design of fuel rod, this analysis can be used as the theoretical method for the verification of safe design.
A Study on the Application of Indolene - MPHA for Automotive Engine (I)
Journal of Energy Engineering, volume 12, issue 3, 2003, Pages 184~189
A study of the property of Indolene-Methanol Plus High Alcolhols (MPHA) has been completed. The study invested the measurement of fuel properties. The fuel properties investigated are distillation characteristics, heating value, flash point, specific gravity and water tolerance. The alcohol concentration was varied from 0 to 100 percent by volume in clear Indolene. The measurement of fuel properties indicated that, in general, Indolene-MPHA blends have higher water tolerance, similar specific gravity, similar flash point and different distillation characteristics compared to Indolene-Methanol blends.
A Study on the Application of Indolene -MPHA for Automotive Alternative Fuel (II) -
Journal of Energy Engineering, volume 12, issue 3, 2003, Pages 190~196
A study of the performance effect of Indolene-Methanol Plus High Alcolhols (MPHA) has been completed. The study invested the measurement of performance parameters. The performance parameters measured are minimum advance for best torque (MBT) spark timing, power output and thermal efficiency. The alcohol concentration was varied from 0 to 100 percent by volume in clear Indolene. The performance parameters were measured using a single cylinder spark ignition engine at different compression ratios. The results of the performance measurements indicated that Indolene-MPHA blends have a higher MBT spark advance, similar power output and lower thermal efficiencies than Indolene-Methanol blends.
A Numerical Analysis of Pulse-Jet Cleaning Characteristics for Ceramic Filter System Design
Journal of Energy Engineering, volume 12, issue 3, 2003, Pages 197~206
A numerical analysis of the pulse-jet cleaning characteristics in a porous ceramic candle filter system was performed. To obtain the detailed velocity and pressure distribution during the cleaning process in a porous filter system, the axi-symmetric compressible Navier-Stokes equations including energy conservation equation were solved by using the FLUENT code which adopts FVM (Finite Volume Method). The effects of pulse cleaning nozzle diameter, nozzle tip position, permeability of a porous ceramic candle filter, diffuser throat diameter, and cleaning pressure on the cleaning flow characteristics were investigated extensively.
The Effect of Acoustic Energy on the Collection Efficiency of the Electrostatic Precipitator
Journal of Energy Engineering, volume 12, issue 3, 2003, Pages 207~215
An experimental study on the characteristics of collection efficiency for electrostatic precipitator under the action of acoustic energy in the gas stream was performed. In the experiment, the acoustic energy which has 2 kHz and 141 dB was applied to electrostatic precipitator inlet, and the test parameters were used in terms of the magnitude of gas velocity. From the results of experiment, the collection efficiency of ESP was increased due to acoustic energy, and this effect was much clearer at high velocity. This means that the acoustic energy can play an important role in the enlargement of specific collection area of the electrostatic precipitator.
An Experimental Study on the Dewatering from the Waste Lubrication Oil by Vacuum Evaporation
Journal of Energy Engineering, volume 12, issue 3, 2003, Pages 216~222
An experimental study on the characteristics of a dewatering due to vacuum evaporation in the waste lubrication oil were performed using a lab scale system. Evaporation characteristics were investigated for various performance factors. Results of evaporation characteristics as a function of vacuum pressure, oil temperature, initial water concentration, and nozzle type were obtained. Increasing the oil temperature and altering the nozzle type were found to increase the evaporation rate without increasing vacuum pressure requirement. The best performance is achieved for the nozzle which made porous material.
A Study on the Heat Exchanger Fouling Characteristics of Sludge Incinerator at the IronWorks
Journal of Energy Engineering, volume 12, issue 3, 2003, Pages 223~230
A study was performed to measure and analyze the gas-side fouling of heat exchanger to cool the exhaust gas from sludge incinerator at ironworks. The incinerator gas passes through inside of the vertical tubes of heat exchanger to preheat the combustion air. This kind of fouling occurs at the entrance region of the heat exchanger and thus the perforated fouling plate was designed to measure the gas-side fouling and to analyze the particulate deposit. As a result of analysis, the particulate deposition rate was influenced by temperature, particulate composition and size and also the deposition patterns were different according to the location of perforated fouling plate. The computational analysis was performed to obtain the deposition rates at the perforated fouling plate and the calculation showed that the deposition rate was varied with the hole size and particulate size. It was proved that the fouling at the entrance region of heat exchanger could be measured by the perforated fouling plate designed in this study.
Reactivity of Coal Char Gasification with
at Elevated Pressure
Journal of Energy Engineering, volume 12, issue 3, 2003, Pages 231~240
Reactivity of Char-CO
gasification of five coals for power generation was investigated with PTGA in the temperature range 850∼1000
and the pressure range 0.5∼2.0 MPa. The effect of coal rank, initial char characteristics and pressure on the reaction rate was evaluated for five chars. The reactivity of low lank coal char was better than that of high rank coal char, and this could be explained with the initial pore structure and surface area of char. Meso/macro-pores of char seems to markedly affect char reactivity by way of providing channels for diffusion of reactant gas into the reactive surface area. For the range of tested pressure, the reaction rate is proportional to CO
partial pressure and the reaction order ranges from 0.4 to 0.7 for five chars. The effect of total pressure on the reaction rate was small, and kinetic parameters, based on the unreacted core model, were obtained for five chars.
Criterion Thesis for Estimation of Power Demand in New Housing Development
Journal of Energy Engineering, volume 12, issue 3, 2003, Pages 241~252
As more and more residential complexes will be developed in the future, this paper tries to establish the definitions and standards for the estimation of power demands in these areas and propose standards for the estimation of power demands for power companies and construction companies to settle the debates surrounding this issue. Through a survey and analysis of existing areas, new standards that will enable more accurate estimation of power demands in new cities complexes to be developed in the future are established by calculating the average load density, load factor, utilization factor by area, use and building size after dividing the facilities into building type. Also, for general hospitals, sports facilities and government buildings of the non residential building category, metropolitan areas, where these facilities are concentrated, are surveyed and analyzed.