【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 035
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【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 035: Why does the heat exchange efficiency of a heat exchanger start off being good but gradually decline over time? Answer: As the heat exchanger is in use, deposits gradually accumulate on the inner and outer surfaces of its tubes, which reduces the overall heat transfer coefficient; as a result, the heat exchange efficiency declines over time. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Correct: 3 wealth, Incorrect: 1 wealth ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below
During operation of the heat exchanger, deposits gradually accumulate on the inner and outer surfaces of the tubes, reducing the overall heat transfer coefficient and thus causing the heat exchange efficiency to decline over time.
Scaling, blockage, leakage, internal leakage, lack of exhaust,
Scaling on the tube side or shell side reduces the heat exchange efficiency of the heat exchanger; as a result, the performance is good at first but gradually deteriorates over time
Because during the operation of the heat exchanger, deposits gradually accumulate on the inner and outer surfaces of the tubes, reducing the overall heat transfer coefficient
Because during the operation of the heat exchanger, deposits gradually accumulate on the inner and outer surfaces of the tubes, reducing the overall heat transfer coefficient
During operation of the heat exchanger, deposits gradually accumulate on the inner and outer surfaces of the tubes, reducing the overall heat transfer coefficient and thus causing the heat exchange efficiency to decline over time.
It performs well when first put into use, but its performance deteriorates due to scaling after prolonged operation
During operation of the heat exchanger, deposits gradually accumulate on the inner and outer surfaces of the tubes, reducing the overall heat transfer coefficient and thus causing the heat exchange efficiency to decline over time.