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Chemical Heat Transfer

A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the _______________ number?

Chemical Heat Transfer /
A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the _______________ number?

A. Condensation
B. Grashoff
C. Stanton
D. Brinkman

A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the _______________ number? Read More »

Chemical Heat Transfer

Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by____________________?

Chemical Heat Transfer /
Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by____________________?

A. Keeg the heat transfer surface clean
B. Enhancing the fluid pumg rate
C. Increasing the tube length
D. None of these

Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by____________________? Read More »

Chemical Heat Transfer

A hot liquid is kept in a big room. The logarithm of the numerical value of the temperature difference between the liquid and the room is plotted against time. The plot will be very nearly a/an___________________?

Chemical Heat Transfer /
A hot liquid is kept in a big room. The logarithm of the numerical value of the temperature difference between the liquid and the room is plotted against time. The plot will be very nearly a/an___________________?

A. Ellipse
B. Straight line
C. Parabola
D. Circular arc

A hot liquid is kept in a big room. The logarithm of the numerical value of the temperature difference between the liquid and the room is plotted against time. The plot will be very nearly a/an___________________? Read More »

Chemical Heat Transfer

In a shell and tube heat exchanger, the tube side heat transfer co-efficient just at the entrance of the tube is_________________?

Chemical Heat Transfer /
In a shell and tube heat exchanger, the tube side heat transfer co-efficient just at the entrance of the tube is_________________?

A. Infinity
B. Zero
C. Same as average heat transfer co-efficient for tube side
D. None of these

In a shell and tube heat exchanger, the tube side heat transfer co-efficient just at the entrance of the tube is_________________? Read More »

Chemical Heat Transfer

Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface ?

Chemical Heat Transfer /
Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface ?

A. Liquid density
B. Liquid viscosity
C. Hot surface temperature
D. Interfacial tension

Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface ? Read More »

Chemical Heat Transfer