ExamVeda
Login
Home

Fluid motion in the natural convection heat transfer between a solid...

This question belongs to Chemical Engineering Heat Transfer
Heat Transfer
?

Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the

Answer & Solution
Correct Answer: Option B
In natural convection heat transfer, fluid motion is driven by the temperature gradient produced due to density difference. As a fluid near a heated surface becomes warmer, it tends to rise due to a decrease in density. Conversely, the cooler fluid descends. This creates a continuous circulation known as natural convection currents.

Therefore, the correct answer is Option B: Temperature gradient produced due to density difference.
Examveda
Question posted by Examveda
Community

Join the Discussion

1 Comment
Bidyut Chem04
Bidyut Chem04 3 years ago
Why is it not option B?
Keep Learning

Related Questions on Heat Transfer

200 kg of solids (on dry basis) is subjected to a drying process for a period of 5000 seconds. The drying occurs in the constant rate period with the drying rate as, Nc = 0.5 × 10-3 kg/m2.s. The initial moisture content of the solid is 0.2 kg moisture/kg dry solid. The interfacial area available for drying is 4 m2/1000 kg of dry solid. The moisture content at the end of the drying period is (in kg moisture/kg dry solid)
A. 0.5 B. 0.05 C. 0.1 D. 0.15
It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30°C. The boiling point of the solution is 110°C, the latent heat of vaporisation is 2100 kJ/kg and the specific heat of the solution is 4 kJ/(kgK). The rate at which the heat has to be supplied in (kJ/min) to the evaporator is
A. 3.06 × 105 B. 6.12 × 105 C. 7.24 × 105 D. 9.08 × 105
Fqra cold viscous feed, backward feed gives __________ than forward feed.
A. A higher capacity B. A lower capacity C. Lower economy D. None of these
In a multipass shell and tube heat exchanger, tube side return pressure loss is equal to __________ the velocity head.
A. Twice B. Four times C. Square root of D. Square of
More Related Questions on Heat Transfer