Process Equipment and Plant Design Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to I.D. of the shell 40% of the I.D. of the shell 25 cms 5 cms I.D. of the shell 40% of the I.D. of the shell 25 cms 5 cms ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Overall distillation column efficiency for most of the refinery columns can be given by (for μ = 0.07 - 1.4 cp and relative volatility < 4) (where η = overall column efficiency, % μ = molal average viscosity of feed at average column temperature and pressure, cp Δp = pressure drop per tray, psi) Η = 1.66 - 0.25 log μ Η = 17 - 61.1 log μ Η = 24.6 (Δp/μ) Η = 0.25 log μ - 1.67 Η = 1.66 - 0.25 log μ Η = 17 - 61.1 log μ Η = 24.6 (Δp/μ) Η = 0.25 log μ - 1.67 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design With increase in pressure drop (for a given particle size), the dust collection efficiency of a cyclone separator will Decrease Increase Increase or decrease depending on the nature of the dust Remain unaffected Decrease Increase Increase or decrease depending on the nature of the dust Remain unaffected ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally. Unpredictable Same Lower Higher Unpredictable Same Lower Higher ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about __________ times.the design pressure. 1.5 to 2 3 to 4 >5 4 to 5 1.5 to 2 3 to 4 >5 4 to 5 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The centre to centre distance between two consecutive baffles in a shell and tube heat exchanger is called the baffle pitch or baffle spacing, which is more than 1/5th the I.D. of the shell. Which of the following is not a function of the baffles? To increase the tube side heat transfer co-efficient by inducing turbulence To reduce the induced vibration in the tubes To provide support to the tube bundle To increase the residence time of shell side fluid To increase the tube side heat transfer co-efficient by inducing turbulence To reduce the induced vibration in the tubes To provide support to the tube bundle To increase the residence time of shell side fluid ANSWER DOWNLOAD EXAMIANS APP
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