For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area___________________?

Byadmin March 3, 2019August 24, 2021

For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area___________________?

A. Increases
B. Decreases
C. Remain constant
D. Passes through a maxima

Chemical Heat Transfer

1000 Kg of liquid at 30°C in a well stirred vessel has to be heated to 120°C, using immersed coils carrying condensing steam at 150°C. The area of the steam coils is 1.2 m2 and the overall heat transfer co-efficient to the liquid is 1500 W/m2.°C. Assuming negligible heat loss to the surrounding and specific heat capacity of the liquid to be 4 kJ/kg.°C, the time taken for the liquid to reach desired temperature will be__________________?

1000 Kg of liquid at 30°C in a well stirred vessel has to be heated to 120°C, using immersed coils carrying condensing steam at 150°C. The area of the steam coils is 1.2 m2 and the overall heat transfer co-efficient to the liquid is 1500 W/m2.°C. Assuming negligible heat loss to the surrounding and specific heat capacity of the liquid to be 4 kJ/kg.°C, the time taken for the liquid to reach desired temperature will be__________________?

A. 15 min
B. 22 min
C. 44 min
D. 51 min

Read More 1000 Kg of liquid at 30°C in a well stirred vessel has to be heated to 120°C, using immersed coils carrying condensing steam at 150°C. The area of the steam coils is 1.2 m2 and the overall heat transfer co-efficient to the liquid is 1500 W/m2.°C. Assuming negligible heat loss to the surrounding and specific heat capacity of the liquid to be 4 kJ/kg.°C, the time taken for the liquid to reach desired temperature will be__________________?
Chemical Heat Transfer

The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are_______________?

The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are_______________?

A. Re.Gz
B. Nu, Pr
C. Nu, Pr, Re
D. Nu, Gz

Read More The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are_______________?
Chemical Heat Transfer

In a forward feed multiple effect evaporator unit__________________?

In a forward feed multiple effect evaporator unit__________________?

A. Viscosity of liquid is highest in first effect
B. Transfer from effect to effect is done by pumps
C. No pump is required to withdraw the product from the last effect
D. None of these

Read More In a forward feed multiple effect evaporator unit__________________?
Chemical Heat Transfer

A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is__________________?

A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is__________________?

A. 6000
B. 24000
C. 60000
D. 48000

Read More A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is__________________?
Chemical Heat Transfer

For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it__________________?

For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it__________________?

A. Decreases the pressure drop
B. Decreases the outlet temperature of cooling medium
C. Increases the overall heat transfer coefficient
D. None of these

Read More For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it__________________?
Chemical Heat Transfer

Thermal diffusivity is the most important in heat transfer by__________________?

Thermal diffusivity is the most important in heat transfer by__________________?

A. Conduction
B. Radiation
C. Condensation
D. Natural convection

Read More Thermal diffusivity is the most important in heat transfer by__________________?

Similar Posts