Chemical Heat Transfer

Fruit juice (a heat sensitive material) can be concentrated in a ____________ evaporator?

Byadmin March 2, 2019August 24, 2021

Fruit juice (a heat sensitive material) can be concentrated in a ____________ evaporator?

A. Long tube
B. Falling film
C. High pressure
D. None of these

Chemical Heat Transfer

Stefan-Boltzmann law applies to _____________ body?

Stefan-Boltzmann law applies to _____________ body?

A. Black
B. White
C. Grey
D. Any colour

Read More Stefan-Boltzmann law applies to _____________ body?
Chemical Heat Transfer

What is the geometric mean of two heat transfer areas A1 and A2 ?

What is the geometric mean of two heat transfer areas A1 and A2 ?

A. √(A1 . A2)
B. √(A1 + A2)
C. ½ √(A1 . A2)
D. 2 √(A1 . A2)

Read More What is the geometric mean of two heat transfer areas A1 and A2 ?
Chemical Heat Transfer

Heat transfer by ____________ may not necessarily require the presence of a medium?

Heat transfer by ____________ may not necessarily require the presence of a medium?

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

Read More Heat transfer by ____________ may not necessarily require the presence of a medium?
Chemical Heat Transfer

Heat transfer rate described by Fourier’s law will decrease, if the _____________ increases?

Heat transfer rate described by Fourier’s law will decrease, if the _____________ increases?

A. Thermal conductivity
B. Thickness
C. Temperature difference
D. Heat transfer area

Read More Heat transfer rate described by Fourier’s law will decrease, if the _____________ increases?
Chemical Heat Transfer

The equation, (NSt × N2/3 Pr) = f/2, is the ____________ analogy ?

The equation, (NSt × N2/3 Pr) = f/2, is the ____________ analogy ?

A. Colburn
B. Reynolds
C. Prandtl
D. None of these

Read More The equation, (NSt × N2/3 Pr) = f/2, is the ____________ analogy ?
Chemical Heat Transfer

For a multipass shell and tube heat exchanger, the LMTD correction factor is always________________?

For a multipass shell and tube heat exchanger, the LMTD correction factor is always________________?

A. 1
B. > 1
C. < 1
D. Between 1 & 2

Read More For a multipass shell and tube heat exchanger, the LMTD correction factor is always________________?

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