Heat Transfer Rate of heat transfer by vaporisation from pools of water is affected by the Nature of heating surface and distribution of bubbles Surface tension of water All of these Viscosity of water Nature of heating surface and distribution of bubbles Surface tension of water All of these Viscosity of water ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, floating head is used for Large temperature differentials High heat transfer co-efficient Less corrosion of tubes Low pressure drop Large temperature differentials High heat transfer co-efficient Less corrosion of tubes Low pressure drop ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer One kilogram of water at 0°C is changed to superheated steam of one atm pressure and 300° C. The major heat consumption in the process will be to To superheat the steam Heat the water from 0°C to 100°C Data insufficient, can Evaporate the water To superheat the steam Heat the water from 0°C to 100°C Data insufficient, can Evaporate the water ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid Decrease in heat exchanger efficiency Excessive corrosion Its evaporation loss Uneconomic LMTD Decrease in heat exchanger efficiency Excessive corrosion Its evaporation loss Uneconomic LMTD ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Natural convection is characterised by Prandtl number Reynolds number Peclet number Grashhoff number Prandtl number Reynolds number Peclet number Grashhoff number 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 333W/m².K 287 W/m².K 894W/m².K 1200W/m².K 333W/m².K 287 W/m².K 894W/m².K 1200W/m².K ANSWER DOWNLOAD EXAMIANS APP
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