Author name: Admin

Approach

Log mean temperature difference

Arithmetic mean temperature difference

Geometric mean temperature difference

Heat transfer co-efficient are high

There is no risk of contamination

There is no mist formation

Cost of equipment is lower

3.06 x l0⁵

6.12 x 10⁵

7.24 x 10⁵

9.08 x 10⁵

Maximum resistance in the series

Sum of all resistances

Average of all resistances

Minimum resistance presents in the series

0.5

0.05

0.1

0.15

Tube side pressure drop and the heat transfer rate

Convective heat transfer co-efficient

Effective tube surface area for convective heat transfer

All of the above

Temperature gradient of the wall to that across the entire pipe

Temperature difference to the temperature gradient at the wall

Heat flux at the wall to that across the entire pipe

None of these

Forward feed

Backward feed

Mixed feed

Parallel feed

1

< 1

> 1

None of these

Cube

Cylinder

Sphere

Equal for all the three