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 outside and steam inside

Finned tube heat exchanger with air inside and steam outside

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

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

Finned tube heat exchanger with air outside and steam inside

Finned tube heat exchanger with air inside and steam outside

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

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

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Heat Transfer
The purpose of providing expansion bellows in the shell of tubular exchanger is to

Increase the heating load

Impart structural strength

Account for the uneven expansion of shell and tube bundles

Facilitate increase of shell length, if needed

Increase the heating load

Impart structural strength

Account for the uneven expansion of shell and tube bundles

Facilitate increase of shell length, if needed

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Heat Transfer
For a given ambient air temperature with increase in the thickness of insulation of a hot cylinderical pipe, the rate of heat loss from the surface would

Decrease

First decrease and then increase

Increase

First increase and then decrease

Decrease

First decrease and then increase

Increase

First increase and then decrease

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Heat Transfer
In case of a supercooled solution, which is on the verge of crystallisation, the free energy of the solution as compared to that of the solid is

Less

More

More or less; depends on the nature of solution

Same

Less

More

More or less; depends on the nature of solution

Same

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Heat Transfer
Choose the correct equation.

Nu = (Pr)(St)

Nu = (Re) (Pr) (St)

Nu = (Re)(Pr)

Nu = (Re) (Pr) (Gz)

Nu = (Pr)(St)

Nu = (Re) (Pr) (St)

Nu = (Re)(Pr)

Nu = (Re) (Pr) (Gz)

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Heat Transfer
Which is the best tube arrangement (in a shell and tube heat exchanger) if the fluids are clean and non-fouling?

Triangular pitch

Square pitch

Diagonal square pitch

None of these

Triangular pitch

Square pitch

Diagonal square pitch

None of these

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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 The purpose of providing expansion bellows in the shell of tubular exchanger is to

Heat Transfer For a given ambient air temperature with increase in the thickness of insulation of a hot cylinderical pipe, the rate of heat loss from the surface would

Heat Transfer In case of a supercooled solution, which is on the verge of crystallisation, the free energy of the solution as compared to that of the solid is

Heat Transfer Choose the correct equation.

Heat Transfer Which is the best tube arrangement (in a shell and tube heat exchanger) if the fluids are clean and non-fouling?

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
The purpose of providing expansion bellows in the shell of tubular exchanger is to

Heat Transfer
For a given ambient air temperature with increase in the thickness of insulation of a hot cylinderical pipe, the rate of heat loss from the surface would

Heat Transfer
In case of a supercooled solution, which is on the verge of crystallisation, the free energy of the solution as compared to that of the solid is

Heat Transfer
Choose the correct equation.

Heat Transfer
Which is the best tube arrangement (in a shell and tube heat exchanger) if the fluids are clean and non-fouling?