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강일환(Il-Hwan Kang),김형만(Hyung-Man Kim),왕학민(Hak-Min Wang),최갑승(Kap-Seung Choi) 한국자동차공학회 2005 한국자동차공학회 지부 학술대회 논문집 Vol.- No.-
As fuel cells approach commercialization, hydrogen production becomes a critical step in the overall energy conversion pathway. Reforming is a process that produces a hydrogen-rich gas from hydrocarbon fuels. Hydrogen production via autothermal reforming (ATR) is particularly attractive for applications that demand a quick stan-up and response time in a compact size. However. further research is required to optimize the performance of autothermal reformers and accurate models of reactor performance must be developed and validated. The design includes the requirement of accommodating a wide range of experimental set ups. Factors considered in the design of the reformer are capability to use multiple fuels. ability to vary stoichiometry. precise temperature and pressure control, implementation of enhancement methods, capability to implement variable catalyst positions and catalyst arrangement, ability to monitor and change reactant mixing, and proper implementation of data acquisition. A model of the system was first developed in order to calculate flowrates, heating, space velocity, and other important parameters needed to select the hardware that comprises the reformer. Predicted performance will be compared to actual data once the reformer construction is completed. This comparison will quantity the accuracy of the model and should point to areas where further model development is required. The end result will be a research tool that allows engineers to optimize hydrogen production via autothermal reformation.
박성천(Sung Chun Park),문병석(Byoung Seok Moon),오창주(Chang Ju Oh),강일환(Il Hwoan Kang) 한국수처리학회 1997 한국수처리학회지 Vol.5 No.3
Water supply system in modern society is one of the most important urban infrastructures as a life line stippling necessary amount of treated water to meet living standard and proper operations of city organizations and urban facilities according to social development and economic growth. The purpose of this study is to analyze the water supply and distribution systems in small cities in Korea and to suggest the enhanced maintenance and the management methods of those facilities. The data from the city of Namwon was analyzed and following result are obtained. Leakage may has been occurred out of pipe network but, the area of high elevation has a little lack of water because the low pressure prevails in the distribution pipes. In order to secure the stabilized water supply to those area the distribution tank are required and the downtown area of the city having problems with water supply needs to adopt the concept of block type pipe network with profound research whereas the new developed area of the cities should utilized the concept of the blocked type pipe network from the beginning stage of development.