In the equation Q = UAΔt; Δt is_________________________?
Correct answer: C. Logarithmic mean temperature difference
- A. Geometric mean temperature difference
- B. Arithmetic mean temperature difference
- C. Logarithmic mean temperature difference
- D. The difference of average bulk temperatures of hot and cold fluids
Explanation
For a heat exchanger, the temperature-driving force is represented by the logarithmic mean temperature difference, which accounts for the changing temperature difference along the exchanger. Thus Δt is LMTD.
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
What is Nusselt number ?
Boiling of milk in an open vessel is an example of ______________ boiling?
While the total emissivity of a perfect black body is unity, the same for a real body is__________________?
Graetz number is given by__________________?
Reynold's analogy states that_________________?
Which of the following has the minimum thermal conductivity ?