Which of the following descriptions are correct regarding the characteristics of the mixture?
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A. The condensation process is isothermal. B. There is sensible heat transfer during condensation. C. The condensation rate of the heavier components is not controlled by the diffusion rate. D. The physical properties of vapor and liquid change during the condensation process. Which option should be chosen? Please explain in particular why A and B are excluded. Thank you.
A The condensation process is isothermal – False; the condensation temperature varies between the bubble point and the dew point. B There is sensible heat transfer during condensation – False; if there were sensible heat transfer, it would be a combination of condensation and cooling processes. C The condensation rate of heavier components is not controlled by the diffusion rate – True; condensation is a heat transfer process, and its rate is not governed by diffusion. D The physical properties of steam and liquid change during the condensation process – True, as the concentrations of steam and liquid both change
You’re amazing! When I first saw this problem, I had no idea what to do, but after seeing your answer, everything became clear instantly
Referring to the explanation above, I think BD is the choice. Please refer specifically to page P279 of the association’s textbook; ask other experts to explain further.
On the rooftop, page 279 explains it in great detail, corresponding exactly to the four options given in the question.
BD, no doubt about it – it’s clearly explained in the book
I took another close look at the association’s textbook; it seems to me that the answers should be B and D
Is c correct? It seems it should be bcd, right?
300 pages of survey and design tutorial, on convective heat transfer and film condensation
The 300-page document on survey and design provides quite detailed information; choose BD.