The Sieder-Tate correlation for heat transfer in turbulent flow in pipe gives Nu α Re0.8, where, Nu is the Nusselt number and Re is the Reynolds number for the flow. Assuming that this relation is valid, the heat transfer co-efficient varies with the pipe diameter D. as _________________?

Related Mcqs:

The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U0 = 400 W/m2.K. The fouling factor after one year of operation is found to be hd0 = 2000 W/m2.K. The overall heat transfer co-efficient at this time is _____________________?

A. 1200 W/m2.K B. 894 W/m2.K C. 333 W/m2.K D. 287 W/m2.K...

The advantage of using a 1 – 2 shell and tube heat exchanger over a 1 – 1 shell and tube heat exchanger is_________________?

A. Lower tube side pressure drop B. Lower shell side pressure drop C. Higher tube side heat transfer co-efficient D. Higher shell side heat transfer co-efficient...

LMTD for evaporators & condensers for a given terminal parameters & set of conditions for counter-flow is equal to that for parallel flow. In such heat exchangers, with one of the fluids condensing or evaporating, the surface area required is the least in the ______________ flow?

A. Parallel B. Mixed C. Counter flow D. Same in either A , B. or C....

The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is__________________?

A. 2.36 B. 4.36 C. 120.36 D. Dependent on NRe only...

Tube pitch is the _______________ of tube diameters and the clearances?

A. Sum B. Difference C. Ratio D. None of these...