Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is

Heat Transfer
Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is

Finned tube heat exchanger with air inside and steam outside

Shell and tube heat exchanger with air on shell side and steam inside tubes

Finned tube heat exchanger with air outside and steam inside

Shell and tube heat exchanger with air inside tubes and steam on shell side

Finned tube heat exchanger with air inside and steam outside

Shell and tube heat exchanger with air on shell side and steam inside tubes

Finned tube heat exchanger with air outside and steam inside

Shell and tube heat exchanger with air inside tubes and steam on shell side

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Heat Transfer
For a counter current heat exchanger with Tih = 80°C, T°c = 60°C, T°h = 50°C and Tic = 30°C, and the temperature difference between the two streams being the same everywhere along Z, the direction of flow of hot fluid. The temperature profile should satisfy

dT/dZ = 0

d²T/dZ² > 0

d²T/dZ² < 0

d²T/dZ² = 0

dT/dZ = 0

d²T/dZ² > 0

d²T/dZ² < 0

d²T/dZ² = 0

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Heat Transfer
The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is

120.36

2.36

Dependent on NRe only

4.36

120.36

2.36

Dependent on NRe only

4.36

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Heat Transfer
The equation, Nst = f/2, is the __________ analogy.

Colburn

Prandtl

None of these

Reynolds

Colburn

Prandtl

None of these

Reynolds

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Heat Transfer
A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides

Both A & B

Lower capacity

Lower economy

Higher economy

Both A & B

Lower capacity

Lower economy

Higher economy

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Heat Transfer
Dietus-Boelter equation cannot be used for molten metals mainly due to its very low

Prandtl number

viscosity

Grashoff number

thermal conductivity

Prandtl number

viscosity

Grashoff number

thermal conductivity

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Heat Transfer

Heat Transfer Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is

Heat Transfer For a counter current heat exchanger with Tih = 80°C, T°c = 60°C, T°h = 50°C and Tic = 30°C, and the temperature difference between the two streams being the same everywhere along Z, the direction of flow of hot fluid. The temperature profile should satisfy

Heat Transfer The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is

Heat Transfer The equation, Nst = f/2, is the __________ analogy.

Heat Transfer A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides

Heat Transfer Dietus-Boelter equation cannot be used for molten metals mainly due to its very low

Heat Transfer
Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is

Heat Transfer
For a counter current heat exchanger with Tih = 80°C, T°c = 60°C, T°h = 50°C and Tic = 30°C, and the temperature difference between the two streams being the same everywhere along Z, the direction of flow of hot fluid. The temperature profile should satisfy

Heat Transfer
The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is

Heat Transfer
The equation, Nst = f/2, is the __________ analogy.

Heat Transfer
A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides

Heat Transfer
Dietus-Boelter equation cannot be used for molten metals mainly due to its very low