Project ForgeSign up free
Heat Transfer
Heat Exchangers
GATE 2015
Hard

Four temperature-profile figures (I-IV) show counter-current double-pipe HX operating modes. Match the bold-curve fluid's process: P-Heating sub-cooled feed to superheated vapour, Q-Condensation of superheated vapour, R-Boiling of sub-cooled liquid, S-Condensation of saturated vapour then sub-cooling. The correct combination is

  • AI-P, II-Q, III-R, IV-S
  • BI-P, II-Q, III-S, IV-R
  • I-Q, II-P, III-S, IV-R
  • DI-Q, II-S, III-P, IV-R

Explanation

Matching each temperature-profile shape (decreasing-then-flat, flat-then-decreasing, flat-then-decreasing-steeper, decreasing-then-flat-then-decreasing) to its corresponding phase-change process: I-Q, II-P, III-S, IV-R.

Source: GATE CH 2015 (2015)

This question is part of a 15-day revision cycle — sign in and Project Forge will bring it back the day before you'd forget it.

Start revising free