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유한요소법을 이용한 CCT 시편의 동적 응력확대계수 해석
김영진,이의준 成均館大學校 科學技術硏究所 1992 論文集 Vol.43 No.2
The objective of this paper is to investigate the effects of geometry, mesh design and time step on the dynamic stress intensity factor in CCT specimen. Both the stress extrapolation and the displacement extrapolation methods were adopted. Numerical results show that the effects of specimen height and the time step on dynamic stress intensity factor were negligible while the effect of mesh design at the far side of crack tip on dynamic stress intensity factor was significant.
다수의 냉동시스템에 의한 저온 저장고의 에너지 성능평가
강동언,김성만,운종호,이의준,박영하,현명택 濟州大學校 産業技術硏究所 2000 산업기술연구소논문집 Vol.11 No.1
The cool storage system(CSS) is a specific building that is required only cooling load without heating during the whole year. CSS uses a electric energy which is very expensive and is required much amount of energy due to temperature differences between interior and ambient temperatures. The purpose of this study is to assess the energy performance of the multi-unit cooler operating control system. For the prediction of its performance, two types of test (KIER). First cell is equiped with one .are installed a t Korea Institute of Energy Research large unit cooler. and second cell consists of two small unit coolers. According to the results of experiments using these cells. the multi-unit cooler operating control system is found to be effective in energy saving and beneficial for storage due to much less deviation of temperature.
다수의 냉동시스템에 의한 저온 저장고의 에너지 성능평가
김성만,윤종호,박영하,이의준,강동언,현명택 제주대학교 산업기술연구소 2000 尖端技術硏究所論文集 Vol.11 No.1
The cool storage system(CSS) is a specific building that is required only cooling load without heating during the whole year. CSS uses a electric energy which is very expensive and is required much amount of energy due to temperature differences between interior and ambient temperatures. The purpose of this study is to assess the energy performance of the multi-unit cooler operating control system. For the prediction of its performance, two types of test cell are installed at Korea Institute of Energy Research (KIER). First cell is equiped with one large unit cooler, and second cell consists of two small unit coolers. According to the results of experiments using these cells, the multi-unit cooler operating control system is found to be effective in energy saving and beneficial for storage due to much less deviation of temperature.