Heat Transfer Economy of a multiple effect evaporator depends upon the Heat balance consideration Neither A nor B Rate of heat transfer Both A and B Heat balance consideration Neither A nor B Rate of heat transfer Both A and B ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer 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 287 W/m².K 333W/m².K 1200W/m².K 894W/m².K 287 W/m².K 333W/m².K 1200W/m².K 894W/m².K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used In high range of temperature differences To prevent corrosion of the tube bundles In low range of temperature differences Because of its low cost In high range of temperature differences To prevent corrosion of the tube bundles In low range of temperature differences Because of its low cost ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient continues to increase goes through a minimum goes through a maximum. continues to decrease continues to increase goes through a minimum goes through a maximum. continues to decrease ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m².°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be Less than the steam pipe with 5 cms insulation Less than that of the uninsulated steam pipe Greater than that for uninsulated steam pipe Equal to that of the uninsulated steam pipe Less than the steam pipe with 5 cms insulation Less than that of the uninsulated steam pipe Greater than that for uninsulated steam pipe Equal to that of the uninsulated steam pipe ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter) 0.4 D 0.2 D 0.3 D 0.5 D 0.4 D 0.2 D 0.3 D 0.5 D ANSWER DOWNLOAD EXAMIANS APP
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