Some questions about U-tube heat exchangers?
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1. For the nominal length of the U-tube as specified in GB151, is it the total length of the entire U-tube minus the length of the bent section, divided by 2, or without division? 2. Does the number of U-tubes refer to the number of openings on the tube sheet or the number of U-tubes themselves? 3. What do 315U &19*2 and 315 roots &19*2 in the U-tube specifications mean respectively? (& is the inner diameter). Please ask an authoritative expert to answer; thanks in advance!
1. The nominal length of a U-tube is the total length of the entire U-tube (2 straight sections + 1 curved section), minus the length of the curved section, divided by 2. 2. It refers to the number of U-tubes, which is the number of tube plate holes divided by 2. 3. ?
Thank you! ! Upstairs, thanks for the advice; again, thank you~~
19*2 is the specification for the U-tube; in other words, the outer diameter of the U-tube is 19, and the wall thickness is 2.315 – which should represent the number of units
315U means 315 U-shaped tubes... It’s not clear what the number of tubes refers to in a U-shaped tube heat exchanger; some people interpret it as the number of tube ends, while others consider it to be the total number of tubes. To avoid confusion, 315U is used to represent this number...
3 should mean a nominal diameter of 19 mm and an inner diameter of 2 mm, right?
Thank you all. . I finally understand all of this! ! Thank you again