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.Management Sciences
A. The condensing film co-efficient is about 3 times lower for vertical condenser as compared to the equivalent horizontal condenser for identical situation
B. Film co-efficient for vaporisation decreases as a result of vapor binding
C. In industrial practice, sub-cooling of condensate is required, when the condensate is a volatile
liquid and is to be transferred for storage
D. Overall heat transfer co-efficient in a heat exchanger is controlled by the value of the film coefficient,
which is higher
Related Mcqs:
- A graph between _____________ is called Wilson plot?
- A. (1/U) Vs. (1/v0.8) B. (1/v0.8) Vs. U C. v0.8 Vs . U D. (1/U) Vs. (1/V)...
- Dittus-Boelter equation used for the determination of heat transfer co-efficient is valid ___________________?
- A. For fluids in laminar flow B. For fluids in turbulent flow C. When Grashoff number is very important D. For liquid metals...
- Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter)?
- A. 0.2 D B. 0.5 D C. 0.66 D D. 0.80 D...
- Electro-magnetic spectrum range, which is important for radiation varies from _____________ microns?
- A. 1 to 100 B. 0.5 to 50 C. 10 to 100 D. 100 to 1000...
- The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is___________________?
- A. More B. Less C. Some D. Either more or less; depends on the nature of vapor...
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