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GATE 2023 AG – Question 28

Dairy and Food Engineering · Heat and Mass Transfer · 1 mark · Multiple choice

Which heat exchanger does not require an LMTD configuration correction factor?

  1. Plate exchanger
  2. One shell pass/one tube pass
  3. One shell pass/two tube passes
  4. Two shell passes/four tube passes

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Correct answer: (B) One shell pass/one tube pass

Explanation

The ideal single-pass shell/single-pass tube configuration can be treated as simple parallel or counterflow, so its corresponding LMTD is used directly with correction factor1. Multipass arrangements require a configuration correction. Thus the intended uncorrected case is **B**.

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