Process Equipment and Plant Design Liquid gradient over the tray results due to the Low gas velocity Large reflux ratio Resistance offered to flow of liquids by caps & risers and the flow of gas Large plate spacing Low gas velocity Large reflux ratio Resistance offered to flow of liquids by caps & risers and the flow of gas Large plate spacing ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger? 25% cut segmental baffle 75% cut segmental baffle Disk and doughnut baffle Orifice baffle 25% cut segmental baffle 75% cut segmental baffle Disk and doughnut baffle Orifice baffle ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Pick out the wrong statement pertaining to the design of a horizontal tube evaporator. Its usual dimensions are: tube dia = 2-3 cms; evaporator body dia = 1-4 metres and evaporator height = 2.5-4 metres It is unsuitable for concentrating those liquids, which form a scale or deposit salt It is suitable for process, in which the final product is a liquor instead of solid Liquor flows inside the tube, while the steam is outside submerging the tube Its usual dimensions are: tube dia = 2-3 cms; evaporator body dia = 1-4 metres and evaporator height = 2.5-4 metres It is unsuitable for concentrating those liquids, which form a scale or deposit salt It is suitable for process, in which the final product is a liquor instead of solid Liquor flows inside the tube, while the steam is outside submerging the tube ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Vertical condenser is advantageous to the horizontal condenser from operation point of view, when Both the functions of condensation & sub cooling are carried out in a single unit Only the function of condensation is to be carried out Sub cooling of condensate is desired Hydrostatic head is required for refluxing the condensate Both the functions of condensation & sub cooling are carried out in a single unit Only the function of condensation is to be carried out Sub cooling of condensate is desired Hydrostatic head is required for refluxing the condensate ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always More than geometric mean value Less than arithmetic mean value More than arithmetic mean value Both B & C More than geometric mean value Less than arithmetic mean value More than arithmetic mean value Both B & C ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be D₂ - D₁ (D₁ and D₂ are I.D. of inner and outer pipes respectively) Less than that for fluid flow Same as that for fluid flow More than that for fluid flow D₂ - D₁ (D₁ and D₂ are I.D. of inner and outer pipes respectively) Less than that for fluid flow Same as that for fluid flow More than that for fluid flow ANSWER DOWNLOAD EXAMIANS APP
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