【Daily Question】 10/9/2015: Heat exchanger pipe flanges (First 80 participants + 2 rewards)

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This post was last edited by humanrzm on 2015-10-10 at 11:51. To increase the popularity of the heat exchange forum, a \"Question of the Day\" activity has been introduced there; this helps to foster active technical exchanges while also providing members with certain financial rewards. 【Daily Question】 True or False: In heat exchanger design, according to the standard GB151-2014, when the design temperature is 300 degrees or higher, butt-welded flanges should be used for the connections. ( ) Answer: Incorrect; GB/T151-2014 has abolished this requirement. GB151-1999 has this provision. Post your answer as a reply; participating in the quiz earns you +2 wealth points (automatic addition of wealth points is applied – no additional points or comments will be given if your answer is incorrect). If you answer all questions correctly, you’ll receive an additional +3 to +8 wealth points. Those who provide thorough analyses and explanations for the questions (or include detailed calculation processes) will receive extra wealth point rewards. If your answer is correct and your analysis/explanation is accurate, it will be marked as the best reply (or the best assistance). Feel free to answer the questions. Note: We will close this post after 24 hours to reveal the answers and explanations, as well as the best response (the best help provided). Charisma Reward: If you post a topic in this section within two days to provide a detailed explanation of the knowledge points covered in this question, please reply to this post to inform us, and we will have a moderator award you charisma points. It is not allowed to simply copy and paste; original content is preferred, with at least some organization by the user along with personal insights and opinions. After registration, we will rank participants based on the content of their posts: the last-place participant will receive +1 charm, the second-to-last +2 charm, and so on, with the highest score earning +5 charm. Other content: AC version of heat exchange equipment – “One question per day” posting campaign (prizes for participation; valid on a long-term basis). http://bbs.hcbbs.com/thread-1320941-1-1.html “[Study and discussion on GB/T151-2014 heat exchangers] Section 2 – Terms and definitions, general requirements”. http://bbs.hcbbs.com/thread-1399249-1-1.html [Mechanical Section] Collection of essential knowledge; seeking manufacturer sponsorship (long-term campaign); prizes for recommending valuable content. http://bbs.hcbbs.com/thread-1389241-1-1.html [Mechanical Section] Recruitment of forum moderators and technicians; applications and referrals are welcome (valid on a long-term basis). If you’re interested, come and join! 】http://bbs.hcbbs.com/thread-1288857-1-1.html