2010-2-1** Question—Multiple Choice—(Prize for participation)
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Multiple-choice questions: 1. The baffle in a heat exchanger is an arc-shaped or disc-ring-shaped plate placed inside the shell, perpendicular to ( ). A. Floating head B. Weir plate C. Tube bundle D. Fin 2. During the startup of a heat exchanger, the exhaust valve should remain in ( ) state, and it should be closed after startup is complete. A. Closed B. Open C. As it was originally D. The state of the exhaust valve doesn’t matter 3. Water is generally used as the medium for pressure testing of heat exchangers, and the test pressure is ( ) times the operating pressure. A. 1.0~1.2 B. 1.5~2.0 C. 2.0~2.5 D. 2.5~3.0 This question was provided by member feiyun2010; please keep an eye on the provider for updates. The purpose of this* topic is to help everyone review some basic theoretical knowledge, gain new insights by reviewing what has been learned before, discuss and gain a deeper understanding of standards or specifications, as well as address specific issues encountered in practice. This enables us to learn together and improve together; we welcome all friends to participate actively. If you have good *questions, you can also provide them to us; we will give certain rewards to those who provide them. For more details, please refer to the top post in the heat exchange section, titled “Special Thread for Collecting Questions and Answers Related to Heat Exchange Technology”. The link is: http://bbs.hcbbs.com/thread-526242-1-1.html. Note: 1. For fill-in-the-blank, multiple-choice, true/false, and essay questions, please reply using the hidden format (for specific methods of hiding replies, see http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8). Rewards will be given to those whose replies are correct; those who do not use the hidden format or revise their replies will not receive any rewards. Please cooperate actively. 2. For multiple accounts under the same IP, only the first response to participate is valid.
It’s a guess – if you check the book, it will be pointless then
1、C； 2、B ； 3. No selection
The last edit to this post was made by bingfengniandai on 2010-2-1 at 08:44. The second question in CBB is not well formulated; hints are given stating that it should be turned off after startup, which implies that it should be in the on state during the startup process
Question 1: B Question 2: B Question 3: C
1. The baffle in a heat exchanger is an arc-shaped or disc-ring-shaped plate that is placed inside the shell and is perpendicular to (C). A. Floating head B. Weir plate C. Tube bundle D. Fin 2. During the startup of a heat exchanger, the exhaust valve should remain in (B) state, and it should be closed after startup is complete. A. Closed B. Open C. As before D. The state of the exhaust valve doesn’t matter. 3. Water is generally used as the medium for pressure testing of heat exchangers, and the test pressure is (B) times the operating pressure. A. 1.0~1.2 B. 1.5~2.0 C. 2.0~2.5 D. 2.5~3.0