Production Technology: 【Question of the Day】10-11-16 [Tuesday]
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This post was last edited by yy1007 on 2010-11-16 00:16. Production Technology: [Daily Question] 10-11-16 1. For a compressor, when the gas temperature at the inlet is ( ), and the molecular weight and pressure are ( ), if the outlet pressure does not decrease accordingly, the operating point will move closer to the surge threshold line. A Rise B Drop 2. When the compressor experiences surging, the amplitude of these vibrations decreases due to the check valve installed in the outlet pipeline, and the pulsation frequency also ( ). A Decrease B Increase C Unchanged 1) Participants must be rewarded. Simple explanations are encouraged. 2) Please hide your replies; the method for doing this is: http://bbs.hcbbs.com/thread-492556-1-1.html. Do not edit the replies after posting them, and do not provide repeated answers ； 3) The answer will be visible immediately after responding. Answers: 1.A,B 2.A,B
1、A, B 2、B, A
This post was last edited by yy1007 on 2010-11-16 09:30. It should be upward, increasing
1、A、A 2、A、B
1. For a compressor, when the gas temperature at the inlet increases (A rises), as well as the molecular weight and pressure (A rises), if the outlet pressure does not decrease accordingly, the operating point will move closer to the surge threshold line. A rises B falls. 2. When the compressor experiences surge, the presence of a check valve in the outlet pipeline increases its amplitude (B increases), while the pulsation frequency decreases accordingly (A decreases). A Decrease B Increase C Unchanged
1、A、B； 2、A、B
1. For a compressor, when the gas temperature at the inlet increases, while the molecular weight and pressure decrease, if the outlet pressure does not decrease accordingly, the operating point will move closer to the surge threshold line. 2. When the compressor experiences surging, the check valve installed in the outlet pipeline causes its amplitude to increase, while the pulsation frequency decreases as a result.
This post was last edited by kevin101134 on 2010-11-16 08:32. 1. A rises； A rising ； 2. A decreases ； B increases