Process Equipment and Plant Design In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of 3000 1000 10000 5000 3000 1000 10000 5000 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design __________ liquor is best handled in a long tube vertical evaporator. Salting Scaling Foamy Viscous Salting Scaling Foamy Viscous ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of None of these 20.8 2 20.2 None of these 20.8 2 20.2 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate? Square pitch Diagonal square pitch Heat transfer rate is independent of tube arrangement Triangular pitch Square pitch Diagonal square pitch Heat transfer rate is independent of tube arrangement Triangular pitch ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less Are less prone to fouling None of these Are easier to clean Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less Are less prone to fouling None of these Are easier to clean ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design For a cylinderical vessel of moderate height, the weld joint efficiency for joints parallel to the cylinderical axis is given as 1.0, while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylinderical vessel, what value of weld joint efficiency should be used? 0.9 (0.8)0.5 1 0.8 0.9 (0.8)0.5 1 0.8 ANSWER DOWNLOAD EXAMIANS APP
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