Chemical Heat Transfer

A _____________ evaporator employs an annular downtake?

Byadmin March 2, 2019August 24, 2021

A _____________ evaporator employs an annular downtake?

A. Basket type
B. Horizontal
C. Long tube vertical
D. None of these

Chemical Heat Transfer

In a shell and tube heat exchanger, the height of 25 percent cut baffles is equal to (where, D = inside diameter of shell) ?

In a shell and tube heat exchanger, the height of 25 percent cut baffles is equal to (where, D = inside diameter of shell) ?

A. 0.25 D
B. 0.50 D
C. 0.75 D
D. None of these

Read More In a shell and tube heat exchanger, the height of 25 percent cut baffles is equal to (where, D = inside diameter of shell) ?
Chemical Heat Transfer

Viscous & heat sensitive liquids are concentrated in _____________ evaporators?

Viscous & heat sensitive liquids are concentrated in _____________ evaporators?

A. Open pan
B. Long tube
C. Agitated film
D. None of these

Read More Viscous & heat sensitive liquids are concentrated in _____________ evaporators?
Chemical Heat Transfer

Peclet number (Pe) is given by____________________?

Peclet number (Pe) is given by____________________?

A. Pe = Re.Pr
B. Pe = Re/Pr
C. Pe = Pr/Re
D. Pe = Nu.Re

Read More Peclet number (Pe) is given by____________________?
Chemical Heat Transfer

The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K0 + at, where, K is the thermal conductivity and T is the temperature (in °K). The units of ‘a’ in SI system will be________________?

The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K0 + at, where, K is the thermal conductivity and T is the temperature (in °K). The units of ‘a’ in SI system will be________________?

A. W/m.k
B. W/m
C. W/m.k2
D. None, ‘a’ is just a number

Read More The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K0 + at, where, K is the thermal conductivity and T is the temperature (in °K). The units of ‘a’ in SI system will be________________?
Chemical Heat Transfer

Tubes are held between top and bottom tube sheets in Calandria type evaporator by keeping_________________?

Tubes are held between top and bottom tube sheets in Calandria type evaporator by keeg_________________?

A. Both the tube sheets fixed
B. Both the tube sheets floating
C. The top tube sheet floating and bottom tube sheet fixed
D. The top tube sheet fixed and the bottom tube-sheet floating

Read More Tubes are held between top and bottom tube sheets in Calandria type evaporator by keeping_________________?
CHEMICAL ENGINEERING | Chemical Heat Transfer

Baffles are provided in heat exchangers to____________?

Baffles are provided in heat exchangers to____________?A. Remove dirt
B. Increase heat transfer rate
C. Reduce vibrations
D. Reduce heat transfer rate

Read More Baffles are provided in heat exchangers to____________?

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