Question:medium
The LMTD (Log Mean Temperature Difference) approach is best for
The LMTD (Log Mean Temperature Difference) approach is best for
Show Hint
If terminal temperatures are unknown and you need to find the size of the heat exchanger, use the Effectiveness-NTU method instead to avoid complex iterations.
Updated On: May 20, 2026
- Hot fluid and cold fluid are of different phases.
- Heat transfer coefficient changes with length of heat exchanger.
- Terminal temperature of hot and cold fluids are known.
- Terminal temperature of cold and hot fluids are unknown.
Show Solution
The Correct Option is C
Solution and Explanation
Was this answer helpful?
0
Top Questions on Fluid Mechanics
- In a test experiment on a model aeroplane in wind tunnel, the flow speeds on the upper and lower surfaces of the wings are 70 ms–1 and 65 ms–1 respectively. If the wing area is 2 m2 the lift of the wing is _______ N.
(Given density of air = 1.2 kg m-3)- JEE Main - 2024
- Physics
- Fluid Mechanics
- A plane is in level flight at constant speed and each of its two wings has an area of 40 m2 . If the speed of the air is 180 km/h over the lower wing surface and 252 km/h over the upper wing surface, the mass of the plane is ________kg. (Take air density to be 1 kg m–3 and g = 10 ms–2
- JEE Main - 2024
- Physics
- Fluid Mechanics
- Water is filled in a cylindrical vessel of height H. A hole is made at height z from the bottom, as shown in the figure. The value of z for which the range R of the emerging water through the hole will be maximum for:
- WBJEE - 2024
- Physics
- Fluid Mechanics
- Three different liquids are filled in a U-tube as shown in the figure. Their densities are \( \rho_1 \), \( \rho_2 \), and \( \rho_3 \), respectively. From the figure, we may conclude that:
- WBJEE - 2025
- Physics
- Fluid Mechanics
- Want to practice more? Try solving extra ecology questions todayView All Questions