The main function of baffles provided in a shell and tube heat exchanger is to______________?

Byadmin March 3, 2019August 24, 2021

The main function of baffles provided in a shell and tube heat exchanger is to______________?

A. Facilitate the cleaning of outer tube surface
B. Enhance turbulence
C. Hold the tubes in position
D. All A , B & C

Chemical Heat Transfer

The driving potential for the crystal growth during crystallisation is the _______________ of the solution?

The driving potential for the crystal growth during crystallisation is the _______________ of the solution?

A. Concentration
B. Viscosity
C. Super-saturation
D. Density

Read More The driving potential for the crystal growth during crystallisation is the _______________ of the solution?
Chemical Heat Transfer

The critical radius ‘r’ of insulation on a pipe is given by____________________?

The critical radius ‘r’ of insulation on a pipe is given by____________________?

A. r = 2k/h
B. r = k/h
C. r = k/2h
D. r = h/k

Read More The critical radius ‘r’ of insulation on a pipe is given by____________________?
Chemical Heat Transfer

Evaporator tubes are generally_____________________?

Evaporator tubes are generally_____________________?

A. Horizontal
B. Vertical
C. Inclined
D. Random

Read More Evaporator tubes are generally_____________________?
Chemical Heat Transfer

Multiple effect evaporation is generally recommended, when the______________________?

Multiple effect evaporation is generally recommended, when the______________________?

A. Large scale evaporation of liquor is needed
B. Corrosive liquids are to be concentrated
C. Fuel is cheaply available
D. Evaporation on small scale is to be done

Read More Multiple effect evaporation is generally recommended, when the______________________?
Chemical Heat Transfer

The rate of heat transfer through a pipe wall is given by, q = 2π k (Ti – T0)/ln (ri/r0). For cylinder of very thin wall, q can be approximated by__________________?

The rate of heat transfer through a pipe wall is given by, q = 2π k (Ti – T0)/ln (ri/r0). For cylinder of very thin wall, q can be approximated by__________________?

A. q = [2π k (Ti + T0)/2]/ln (ri/r0)
B. q = 2π ri k (Ti – T0)/(r0/ri)
C. q = 2π k (Ti – T0)/(r0/ri)
D. q = 2π k (Ti – T0)/[(r0 + ri)/2]

Read More The rate of heat transfer through a pipe wall is given by, q = 2π k (Ti – T0)/ln (ri/r0). For cylinder of very thin wall, q can be approximated by__________________?
Chemical Heat Transfer

Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer cannot take place____________________?

Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer cannot take place____________________?

A. Between two bodies in physical contact with each other
B. Between two bodies not in physical contact with each other
C. From one part of a body to the another part of the same body
D. Both B & C

Read More Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer cannot take place____________________?

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