http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
성백주(Baek-Ju Sung),이성규(Sung-Kyu Lee),박태국(Tea-Kook Park),장무성(Mu-Seong Chang) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
The closed expansion tank is installed in the pipe system which supplies heating and cooling water to the building. It prevents the pipe from corrosion or failure by completely sealing the pipe and stopping the airflow within the pipe. Also, the closed expansion tank gives stability to the piping system and solves the cool-down problems caused by air locking. However, after using the closed expansion tank for a long period, bladder damage appears due to accumulated fatigue and stress from inside of the pipe because of temperature change in the system water. This problem can cause serious piping system failure. In this paper, life test equipment of 2 sets expansion tank was designed through the field condition. And also, the shape parameters and life analysis results of the closed expansion tank which based on the life test data were suggested.