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
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
Walls of a cubical oven are of thickness l, and they are made of material of thermal conductivity k. The temperature inside the oven is 100°C and the inside heat transfer co-efficient is 3k/l. If the wall temperature on the outside is held at 25°C, what is the inside wall temperature in degree centigrade?

43.75

81.25

48.25

35.5

43.75

81.25

48.25

35.5

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Heat Transfer
Mechanical recompression evaporation is used in the production of

Distilled water

Fruits jam

Salt

Alcohol

Distilled water

Fruits jam

Salt

Alcohol

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Heat Transfer
1 BTU/hr.ft.°F is equal to __________ kcal/hr. m.°C.

1.49

4.88

None of these

1

1.49

4.88

None of these

1

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Heat Transfer
Baffle spacing

Should be less than one fifth the diameter of the shell

Should be less than the inside diameter of the shell

Is not the same as baffle pitch

None of these

Should be less than one fifth the diameter of the shell

Should be less than the inside diameter of the shell

Is not the same as baffle pitch

None of these

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Heat Transfer
Which of the following is concerned with both heat and mass transfer ?

Froude number

Lewis relationship

Kutateladze number

Nusselt number

Froude number

Lewis relationship

Kutateladze number

Nusselt number

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Heat Transfer

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 Mechanical recompression evaporation is used in the production of

Heat Transfer 1 BTU/hr.ft.°F is equal to __________ kcal/hr. m.°C.

Heat Transfer Baffle spacing

Heat Transfer Which of the following is concerned with both heat and mass transfer ?

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
Mechanical recompression evaporation is used in the production of

Heat Transfer
1 BTU/hr.ft.°F is equal to __________ kcal/hr. m.°C.

Heat Transfer
Baffle spacing

Heat Transfer
Which of the following is concerned with both heat and mass transfer ?