Petrochemical Deep Processing Version 2018.08.24

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Participation: Prize 1 Wealth； Correct answer: Reward of 3 wealth points ； Note: This post is valid for 48 hours. True or False: In a fixed-tube-sheet heat exchanger, the tube sheets at both ends are connected and fixed to the shell by welding; it features a simple structure, low manufacturing costs, and is easy to clean, making it suitable for situations where there is a large temperature difference between the shell and the tubes. ( ) Answer: Incorrect. In a fixed-tube-sheet heat exchanger, the tube sheets at both ends are connected and fixed to the shell by welding; it features a simple structure, low manufacturing costs, and is easy to clean, making it suitable for situations where there is a small temperature difference between the shell and the tubes. Your participation is the greatest support for our work. Giving roses to others leaves a pleasant fragrance in one’s own hands. https://bbs.hcbbs.com/static/image/hrline/1.gif https://bbs.hcbbs.com/static/image/hrline/2.gif Note: The answers will be released automatically after two days. ““My Device, My Home” – Large-scale Original Photo Sharing Event (Part 2): https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1868167&extra=page%3D1 Petrochemical Deep Processing Section [Daily Question] Summary Post: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1496481