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정재용(J. Y. Jeong),이규동(K. D. Lee),하태권(T. K. Ha),정효태(H. T. Jeong) 한국소성·가공학회 2008 소성가공 : 한국소성가공학회지 Vol.17 No.7
Effect of V addition on the precipitation behavior and strength of Fe-36Ni based high strength Invar alloy for power transmission wire was investigated. Fe-36Ni Invar alloy plates were fabricated using conventional ingot casting followed by hot rolling. High strength can be obtained through precipitation hardening and strain hardening by cold rolling. Simulation using FactSage<SUP>®</SUP> revealed that equilibrium phases which can be formed are two kinds of MC-type precipitates, Mo₂C and M<SUB>23</SUB>C<SUB>6</SUB> carbide. The latter stoichiometric carbide was expected to be formed at relatively lower temperature of 800℃.
Thiopental 마취로 인한 뇌 Serotonin 함량변동
유종섭 ( C. S. Yoo ),이규동 ( K. D. Lee ),유상봉 ( S. B. Yoo ) 대한내과학회 1968 대한내과학회지 Vol.11 No.3
It was observed that the administration of oil caused a significant reduction in the duration of sleeping time and in the elevated brain serotonin content in duced by thiopental in rabbits. The reduction in sleepin time and brain serotonin occurred when th
Heat Pump System Using Heated Effluent of Thermal Power Generation Plant as a Heat Source
유영선(Ryou, Y.S.),강연구(Kang, Y.K.),김영화(Kim, Y.H.),장재경(Jang, J.K.),김종구(Kim, J.G.),이형모(Lee, H.M.),강금춘(Kang, G.C.),나규동(Nah, K.D.),허태현(Huh, T.H.) 한국신재생에너지학회 2011 한국신재생에너지학회 학술대회논문집 Vol.2011 No.05
In South Korea the gross generation and heated effluent of power generation plant was 259 TWh and 4.73 billion tons in 2008. And then the waste heat from power generation was 388 TWh. It shows that the efficiency of thermal power generation plant is about 40%. Therefore to reduce CO₂ emission from thermal power generation plant, the energy of this heated effluent must be reused to heat buildings or farm facilities. In South Korea horticultural facilities of about 25% are heated in winter season. Total area of greenhouses which are heated is about 13,000 ha. Total heat amount needed to warm greenhouse of 13,000 ha in winter season is only 3.4% of total waste heat from power generation plant. In this study a heat pump system was designed to reuse the waste heat from power generation. Especially new heat exchanger was developed to recover the thermal energy from waste water and this model considered anti-corrosion against sea water and low cost for economic feasibility. This heat recovery system was installed in mango growing greenhouse around thermal power generation plant in Seogwipo-city, Jeju Special Self-Governing Province. The result of preliminary test shows that the heating cost of about 90% is saved as compared to boiler using tax free light oil as a fuel.