In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to____________________?

Related Mcqs:

In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the_______________?

A. Liquid gradient on the tray B. Lower skirt clearance C. Lower static submergence D. Small downcomer liquid seal...

In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed ______________ of the column diameter?

A. 1/5th B. 1/15th C. 1/30th D. 1/50th...

Liquid gradient over the tray results due to the___________________?

A. Resistance offered to flow of liquids by caps & risers and the flow of gas B. Low gas velocity C. Large plate spacing D. Large reflux ratio...

Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around_______________?

A. 0.4-0.6 B. 0.35-0.75 C. 0.1-0.2 D. 0.55-0.85...

Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure ?

A. Larger dia vessel B. Smaller dia vessel C. Larger dia long vessel D. Strength of the vessel is same irrespective of the diameter...