PROCESS EQUIPMENT AND PLANT DESIGN QUIZ

Shell side for large overall heat transfer co-efficient

Shell side for smaller total pressure drop

Shell side, if the flow is counter-current and tube side if the flow is co-current

Tubes to avoid the expansion of high pressure shell construction

1.3 to 2

2.5

1.5 to 3

1.6 to 2

Sensible heat changes for vapour & liquid are negligibly small

Heat of mixing of normal liquid is assumed to be zero

Molar latent heat of the two components are equal

Reflux is not a saturated liquid

1

Minimum

∞

0

2"-3.5"

5"

0.5" -1.25"

Half the tray spacing

Back pitch

Margin

Pitch

None of these

> 1

∞

To increase the tube side heat transfer co-efficient by inducing turbulence

To increase the residence time of shell side fluid

To reduce the induced vibration in the tubes

To provide support to the tube bundle

Di, opt = 7.6 Q0.36 . ρ0.9

Di, opt = 3.9 Q0.45 . ρ0.23

Di, opt = 3 Q0.36 . ρ1.86 μ0.08

Di, opt = 3 Q0.36 ρ0.18

1

8

180

80