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An Experimental Study for the Liquid Freezing Phenomena in a Pipe During Ice Plugging
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 Title & Authors
An Experimental Study for the Liquid Freezing Phenomena in a Pipe During Ice Plugging
Park, Yeong-Don; Jo, Hyeon-Cheol; Choe, Byeong-Ik; Kim, Gwi-Sun;
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The ice plugging process consists of placing liquid nitrogen around a pipe and removing heat until the water in the pipe freezes and provides a solid plug or seal against fluid movement. This technique enables us to repair or inspect a pipe system without shutdown of entire system. A set of test apparatus for investigation of the liquid freezing phenomena during ice plugging is prepared. This study shows the characteristics of the liquid freezing and the heat transfer with various pipe and freezing jacket conditions. And in case there is flow of the fluid inside the pipe, the flow rate which can be able to form the ice plug is identified with the effect of the pipe diameter and freezing jacket length on the plug formation. The permissible maximum flow rate for the complete plug formation is approximately proportional to the freezing jacket length at the same pipe diameter condition.
Ice Plugging;Freeze Sealing;Freezing Jacket;
 Cited by
수평원관내 체적변화를 고려한 얼음의 용용시 전열특성에 관한 연구,조남철;김동춘;이채탈;임장순;

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