Heat Transfer The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by __________ times, when the number of tube passes is increased to 8. 20.8 40.8 20.4 40.4 20.8 40.8 20.4 40.4 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which area is used in case of heat flow by conduction through a cylinder ? Arithmetic mean area Geometric mean area None of the listed here Logarithmic mean area Arithmetic mean area Geometric mean area None of the listed here Logarithmic mean area ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately 32 50 37 45 32 50 37 45 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Boiling point elevation of an ideal solution Both B and C Decreases rapidly with temperature rise Increases rapidly with temperature rise In independent of pressure Both B and C Decreases rapidly with temperature rise Increases rapidly with temperature rise In independent of pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer by conduction in the turbulent core of a fluid flowing through a heated pipe is negligible, if the value of Prandtl number is 0.8 0.4 0.2 0.6 0.8 0.4 0.2 0.6 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) ∝ t Independent of 't' ∝ √t ∝ 1/t ∝ t Independent of 't' ∝ √t ∝ 1/t ANSWER DOWNLOAD EXAMIANS APP
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