【Q&A Question 142】2018.05.22
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【Q&A Question 142】May 22, 2018: Briefly explain why some heat exchangers exhibit good heat transfer performance at first but then see that performance gradually decline During use, deposits (sludge, coking, scaling, etc.) gradually accumulate on the inner and outer surfaces of the tubes. These scale formations are generally soft and porous substances with a low thermal conductivity, which increases the thermal resistance and thus reduces the overall heat transfer coefficient; as a result, the heat exchange efficiency deteriorates 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. The APP short-video skills competition has started! https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1951670
During operation of the heat exchanger, deposits such as sludge, scale, coking, and rust gradually accumulate on the inner and outer surfaces of the tubes. These deposits are usually loose and porous substances with a low thermal conductivity, which reduces the overall heat transfer coefficient and thus leads to a gradual decline in the heat exchange efficiency
During use, deposits (sludge, coking, salts, etc.) gradually accumulate on the inner and outer surfaces of the tubes. These deposits are usually sulfur-rich and porous substances with a low thermal conductivity, which increases the thermal resistance and thus reduces the overall heat transfer coefficient; as a result, the heat exchange efficiency deteriorates over time
Scaling occurs, blocking the tube bundles and affecting heat exchange efficiency
During operation of the heat exchanger, deposits such as sludge, scale, and carbonization gradually accumulate on the inner and outer surfaces of the tubes, which causes the heat exchange efficiency to decline over time.
During use, deposits (sludge, coking, salts, etc.) gradually accumulate on the inner and outer surfaces of the tubes. These deposits are usually sulfur-rich and porous substances with a low thermal conductivity, which increases the thermal resistance and thus reduces the overall heat transfer coefficient; as a result, the heat exchange efficiency deteriorates over time
During use, deposits (sludge, coking, scaling, etc.) gradually accumulate on the inner and outer surfaces of the tubes. These scale formations are generally soft and porous substances with a low thermal conductivity, which increases the thermal resistance and thus reduces the overall heat transfer coefficient; as a result, the heat exchange efficiency deteriorates over time.