Heat Transfer - Study Mode
[#266] Loss of heat from untagged steam pipe to the ambient air is by
Correct Answer
(D) All of the above
[#267] A hot liquid is kept in a big room. The logorithm 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
Correct Answer
(B) Straight line
[#268] The equivalent diameter for the annulus of a double pipe heat exchanger, whose inner pipe has fins on the outside is __________ compared to the same size pipes without fins.
Correct Answer
(B) Less
[#269] Steam is to be condensed in a shell and tube heat exchanger, 5 m long with a shell diameter of 1 m. Cooling water is to be used for removing the heat. Heat transfer co-efficient for the cooling water, whether on shell side or tube side is the same. The best arrangement is
Correct Answer
(B) Vertical heat exchanger with steam on shell side
[#270] Baffles in the shell side of a shell and tube heat exchanger
Correct Answer
(C) Increase the shell side heat transfer co-efficient