Number of tubes and tube banks
Thread Content
I have a question for everyone: is there any relationship between the number of tubes in the tube side and the number of tube bundles in a shell-and-tube heat exchanger? For example, in a heat exchanger, when a U-tube moves back and forth, is it considered one tube or two tubes? Thank you! ! !
So how many does that count as for restraints? Two or one
I think it should be considered a kind of tube or fixture; it can be pulled out together and is part of a whole.
It’s just a bent pipe; why worry so much?
On one tube sheet, regardless of the number of tubes or stages installed, it constitutes one tube bundle.
For a U-tube heat exchanger, it should be a tube bundle; one round trip consists of two tube passes； In the SW6 calculation software, one U-tube is counted as one tube; in ASME, the tube sheets are calculated based on the number of tube holes.
One tube, two passes, one tube bundle – that’s how I understand it
The number of tubes refers to the heat exchange tubes, while the number of tube passes refers to the heat exchange process; in this sense, it means 1 tube with 2 tube passes
This is actually easy to understand literally: \"tube bundle\" refers to a set of heat exchange tubes that are tied together using baffle plates, support plates, and similar elements. The heat exchange tube is integral; it is a single, continuous piece. It is recommended to take a close look at the standards and related books.
The two are not related; in simpler terms, the number of tubes refers to the number of circuits in the tubes, while the tube bank consists of several separate coiled tube units. The term tube bank is usually mentioned when talking about air coolers
Haha, it’s better to keep things clear after all
The pipe bank and the tube bundle have no connection! Single pass: It means the fluid passes through the tube once only (without going back and forth). The number of tubes is equal to the number of times the fluid travels back and forth inside the tubes plus 1. The number and length of the tube bundles in a shell-and-tube heat exchanger are determined by the required heat transfer area and the structure of the heat exchanger; the material chosen for these tubes takes into account factors such as heat transfer efficiency, corrosion resistance, and weldability. Common pipe diameters and wall thicknesses include Φ19×2, Φ25×2.5, Φ32×3, Φ38×3, etc ； The tube length is available in 3000 mm and 6000 mm ； The materials include plain carbon steel or stainless steel, etc.
U-tube heat exchangers also belong to the category of shell-and-tube heat exchangers, so they follow the same definition as mentioned above! One piece equals two trips