Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m2.°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the_________________?

Correct answer: B. Condensate is corrosive in nature

A. Higher condensing film co-efficient is desired
B. Condensate is corrosive in nature
C. Lower pressure drop through the exchanger is desired
D. Temperature of the incoming vapor is very high

Explanation

A corrosive condensate is placed inside the tubes so the expensive corrosion-resistant material is limited to the tube side and cleaning or replacement is easier. Condensing outside the tubes is often preferred when higher condensation coefficients or lower vapor-side pressure drop are important.

Written and checked by Zahid Hussain, MS Computer ScienceLast updated 18 September 2026

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Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m2.°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the_________________?

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