Chemical Heat Transfer

Prandtl and Reynold’s analogies are identical for Prandtl number value of__________________?

Byadmin March 3, 2019August 24, 2021

Prandtl and Reynold’s analogies are identical for Prandtl number value of__________________?

A. 0
B. 0.5
C. 1
D. 5

Chemical Heat Transfer

Overall heat transfer co-efficient of a particular tube is U1. If the same tube with some dirt deposited on either side has coefficient U2, then_________________?

Overall heat transfer co-efficient of a particular tube is U1. If the same tube with some dirt deposited on either side has coefficient U2, then_________________?

A. U1 = U2
B. U2 > U1
C. U1 > U2
D. U1 = dirt factor – U2

Read More Overall heat transfer co-efficient of a particular tube is U1. If the same tube with some dirt deposited on either side has coefficient U2, then_________________?
Chemical Heat Transfer

In a boiling curve, the peak heat flux is called the _____________ point?

In a boiling curve, the peak heat flux is called the _____________ point?

A. Nusselt
B. Leidenfrost
C. Boiling
D. Burnout

Read More In a boiling curve, the peak heat flux is called the _____________ point?
CHEMICAL ENGINEERING | Chemical Heat Transfer

Maximum heat transfer rate can be expected in case of_________?

Maximum heat transfer rate can be expected in case of_________?A. Laminar flow
B. Co-current flow
C. Turbulent flow
D. Heat flow rate is independent of nature of flow

Read More Maximum heat transfer rate can be expected in case of_________?
Chemical Heat Transfer

The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) _________________?

The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) _________________?

A. ∝ t
B. ∝ 1/t
C. ∝ √t
D. Independent of ‘t’

Read More The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) _________________?
Chemical Heat Transfer

Thermal diffusivity is given by__________________?

Thermal diffusivity is given by__________________?

A. k/ρCp
B. ρCp/k
C. μCp/a
D. μ/hCp

Read More Thermal diffusivity is given by__________________?
Chemical Heat Transfer

Which is the most suitable for the concert-ration of highly concentrated solution ?

Which is the most suitable for the concert-ration of highly concentrated solution ?

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

Read More Which is the most suitable for the concert-ration of highly concentrated solution ?