The discussion revolves around the configuration and operation of a two-pass shell and tube heat exchanger, specifically addressing the relationship between the number of tubes and tube passes. Participants explore the implications of the design and clarify terminology related to tube passes and tubes.
Participants express confusion regarding the terminology and the relationship between the number of tubes and tube passes. There is no consensus on the interpretation of the configuration, as some participants reiterate the two-pass concept while others seek further clarification.
Participants have not fully resolved the distinction between the number of tubes and tube passes, leading to ongoing uncertainty in the discussion.
Ok got it. Thanks!Nidum said:A two pass heat exchanger has two sets of tubes . Working fluid first goes through one set of tubes then does a U turn and comes back through the other set of tubes . So the working fluid passes through the heat exchanger twice . Hence the description two pass .
U r correct if u cut the capsule shell u will see 140 tubes. The configuration is as what Nidum said, it makes a U turn. This is to increase effective area in which the two fluids interect.Janiceleong26 said:I see. Meaning there will be a total of 140 tubes in the heat exchanger? But wouldn't that be 140 tube passes? I'm confused as to what is the difference between 'tube pass' and 'tube'
Nidum said:A two pass heat exchanger has two sets of tubes . Working fluid first goes through one set of tubes then does a U turn and comes back through the other set of tubes . So the working fluid passes through the heat exchanger twice . Hence the description two pass .