کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1507541 | 1511059 | 2012 | 6 صفحه PDF | دانلود رایگان |
The double-inlet pulse tube refrigerator that has a diaphragm inserted in a bypass-tube, which enabled it to transmit a pressure oscillation whereas to obstruct a DC gas flow, was manufactured and tested. The oscillating flow behavior inside of the refrigerator was studied by using a smoke-wire flow visualization technique. It was found that if the diaphragm was optimized, the performance would be improved more than that of the refrigerator with a bypass valve due to the increase in the P–V work of the gas and the decrease in the convective heat loss caused by a secondary flow.
► A pulse tube refrigerator with a diaphragm DC gas flow suppressor was studied.
► Flow visualization was used to observe flow phenomena in the refrigerator.
► Effectiveness of the suppressor on performance of the refrigerator was evaluated.
► The performance is improved by using the appropriate suppressor.
► A P–V work increased and a convective heat loss decreased by the suppressor.
Journal: Cryogenics - Volume 52, Issues 7–9, July–September 2012, Pages 410–415