Author name: Admin

Heat transfer co-efficient over the entire heat exchanger is not constant

There exists an unsteady state

The heat capacity is not constant and there is a phase change

None of these

Increases

Decreases

Remains constant

May increase or decrease, depends on the vacuum

Condense the steam flowing in the pipeline

Remove water resulting from partial condensation of steam

Stop the supply of steam

None of these

3 x l05

3 x l08

3 x l010

3 x l012

X/KA

KA/x

K/Ax

A/Kx

Average

Geometric mean

Product

Sum

Temperature of the heating surface is less than the boiling point of the liquid

Temperature of the heating surface is more than the boiling point of the liquid

Bubbles from heating surface are absorbed by the mass of the liquid

Very large vapour space is necessary

CO₂

Dissolved O₂

Both A & B

Neither A nor B

5.6

0.025

3.5

0.0035

Remains unchanged

Increases

Increases or decreases depending on number of shell passes

Decreases