Indirect contact heat exchangers are preferred over direct contact heat exchangers, because_________________?
Correct answer: B. There is no risk of contamination
- A. Heat transfer co-efficient are high
- B. There is no risk of contamination
- C. There is no mist formation
- D. Cost of equipment is lower
Explanation
Indirect exchangers keep the two fluids separated by a wall, preventing mixing and contamination. Direct-contact units may have higher transfer rates but cannot provide this separation.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Heat Transfer Operations
645 free Heat Transfer Operations MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Heat Transfer Operations questions
Heat transfer by conduction in the turbulent core of a fluid flowing through a heated pipe is negligible, if the value of Prandtl number is_______________?
The actual temperature drop across the heating surface of an evaporator depends on the_______________?
jH factor for heat transfer depends upon the ____________ number?
Which of the following has the lowest overall heat transfer co-efficient ?
Forced circulation evaporators are useful for the concentration of viscous, salting and scale forming liquors. Which of the following is a forced circulation evaporator ?
In case of heat transfer by conduction in a hollow cylinder, ______________ mean area is used to calculate the heat transfer rate?