Heat Transfer Fouling factor for a heat exchanger is given by (where, U₁ = heat transfer co-efficient of dirty surface U₂ = heat transfer co-efficient of clean surface) 1/U₁ - 1/U₂ U₁ - U₂ U₂ - U₁ 1/U₂ - 1/U₁ 1/U₁ - 1/U₂ U₁ - U₂ U₂ - U₁ 1/U₂ - 1/U₁ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer When does the heat generated by fluid friction becomes appreciable compared to the heat transferred between the fluids? When fluid flows past a smooth surface None of these At high fluid velocity At low velocity When fluid flows past a smooth surface None of these At high fluid velocity At low velocity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer To reduce the tube side pressure drop for the same flow rate, the heat exchanger recomended is 2-4 heat exchanger 1-2 heat exchanger 3-2 heat exchanger 1-1 heat exchanger 2-4 heat exchanger 1-2 heat exchanger 3-2 heat exchanger 1-1 heat exchanger ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The value of Stefan-Boltazman constant in SI unit is 0.1714 x 10-8W/m².°K4 5.6697 x 10-8W/m².°K4 0.1714 x 10-8kcal/m². °K4 5.6697 x 10-8kcal/m² . °K4 0.1714 x 10-8W/m².°K4 5.6697 x 10-8W/m².°K4 0.1714 x 10-8kcal/m². °K4 5.6697 x 10-8kcal/m² . °K4 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Extremely large or small volumes of fluids are generally best routed through the shell side of a shell and tube heat exchanger, because of the Flexibility possible in the baffle arrangement Low pressure drop Less corrosion problems High heat transfer co-efficient Flexibility possible in the baffle arrangement Low pressure drop Less corrosion problems High heat transfer co-efficient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of a vertical tube evaporator, with increase in the liquor level, the True temperature drop increases Both B and C Capacity of the evaporator is decreased Capacity of the evaporator is increased True temperature drop increases Both B and C Capacity of the evaporator is decreased Capacity of the evaporator is increased ANSWER DOWNLOAD EXAMIANS APP
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