Process Equipment and Plant Design Cooling water fouling factors vary in the range of 0.001 to 0.003 (kcal/hr. m. °C)⁻¹ (kcal/hr.m² .°C)⁻¹ (W/m².°K)⁻¹ (BTU/hr.ft² . °F)⁻¹ (kcal/hr. m. °C)⁻¹ (kcal/hr.m² .°C)⁻¹ (W/m².°K)⁻¹ (BTU/hr.ft² . °F)⁻¹ ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency Increases Remains same Decreases May increase or decrease depending upon the plate spacing Increases Remains same Decreases May increase or decrease depending upon the plate spacing ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation? McCabe-Thiele's method Sorel-Lewis method None of these Ponchon-Savarit method McCabe-Thiele's method Sorel-Lewis method None of these Ponchon-Savarit method ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of (1.2)5/3 (1.2)2/3 (1.2)3/2 (1.2)3/5 (1.2)5/3 (1.2)2/3 (1.2)3/2 (1.2)3/5 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Pressure drop due to pipe fittings can be estimated by the equation, ΔP/p = 4f.Le/D.V2/2gc, where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of Le/D (dimensionless) for 45° elbow and 180° close return bends would be respectively around 45 and 75 5 and 10 300 and 500 180 and 300 45 and 75 5 and 10 300 and 500 180 and 300 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the Neither A nor B Economic limit reached, when the plant cost exceeds the saving of steam Both A & B Practical limit reached, due to low heat transfer rate because of inadequate temperature difference Neither A nor B Economic limit reached, when the plant cost exceeds the saving of steam Both A & B Practical limit reached, due to low heat transfer rate because of inadequate temperature difference ANSWER DOWNLOAD EXAMIANS APP
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