| 摘要 |
PROBLEM TO BE SOLVED: To provide a method capable of easy inspection of bulk leakage of airtight products such as a heat exchanger. SOLUTION: In a measurement of the required time (t<SB>1</SB>-t<SB>0</SB>) from the time at which checking gas G is introduced to the inlet 2 of a heat exchanger 1 with specified flowing path between the inlet 2 and the outlet 3 within its interior to the time at which checking gas G is exhausted from the outlet 3, when that time is shorter than that measured in flowing through the normal route 5, possibility is pointed out of bulk leakage. COPYRIGHT: (C)2005,JPO&NCIPI
|
