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유체 유동에 의한 쉘-튜브 오일 냉각기의 내부 압력 고찰
한성건(S. G. Han),김형의(H. E. Kim) 유공압건설기계학회 2011 유공압건설기계학회 학술대회논문집 Vol.2011 No.6
This work presents a procedure for estimating the shell side pressure drop in shell and tube oil coolers. Correlations for evaluating the pressure drop in an ideal tube bank coupled with correction coefficients considering the influence of leakage and bypass streams, and for estimating the pressure drop in a window section zone and n interior cross section zone are employed in this procedure. In the present work, parameters for calculating the pressure drop on the shell side will be involved the shell side fluid stream inclination angle with the axis of shell, Reynolds number of shell side fluid and interior cross flow, and tube layouts. The evaluation procedure is based on the Bell method Knowledge of pressure drop on the shell side will be useful for a designer and manufacturer of an oil cooler.
원통다관식 열교환기의 압력 변화에 따른 설계 응력 연구
이용범(Y. B. Lee),한성건(S. G. Han),고재명(J. M. Ko) 유공압건설기계학회 2008 드라이브·컨트롤 Vol.5 No.2
Shell-and-tube type heat exchangers are generally classified with fixed tube-sheet and floating tube-sheet heat exchangers. In this paper, we employed the fixed tube-sheet heat exchangers. We theoretically investigated the safety evaluation of our shell-tube heat exchanger by axial, bending and equivalent stress of fill tubes, tube plates, channels and shell. Design pressure ranges were chosen pressure(0.6~2 ㎫) on tube side and 200 %(3 ㎫) of Maximum pressure on shell side for safety evaluation of heat exchangers. This research will be useful for fabrication of heat exchangers to prevent against damage hazard of heat exchangers in operation.