Process Equipment and Plant Design In perforated plate towers, the Hole sizes may be around 1/8" or 3/16" Pressure drop is less compared is similar bubble cap towers Total hole area may be around 6 to 15% of tower cross-sectional area All of these Hole sizes may be around 1/8" or 3/16" Pressure drop is less compared is similar bubble cap towers Total hole area may be around 6 to 15% of tower cross-sectional area All of these ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator Is economical in operation Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle Employs high velocity, high heat transfer rate and less heating surface requirement Both B & C Is economical in operation Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle Employs high velocity, high heat transfer rate and less heating surface requirement Both B & C ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Joint efficiency (J) for a seamless pipe is 1.2 < 0.5 1 0.85 1.2 < 0.5 1 0.85 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The equivalent diameter for fluid flow through a channel of constant non-circular cross section of area 'A' is given by (where, P = perimeter of the channel in contact with the fluid) √A A/P 4 A/P 4 P/A √A A/P 4 A/P 4 P/A ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The main purpose of providing stepping on the trays is to Improve the flow condition Facilitate handling of large flow rate of liquid Increase the residence time Decrease the pressure drop Improve the flow condition Facilitate handling of large flow rate of liquid Increase the residence time Decrease the pressure drop ANSWER DOWNLOAD EXAMIANS APP
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