Process Equipment and Plant Design For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by Di, opt = 7.6 Q0.36 . ρ0.9 Di, opt = 3 Q0.36 . ρ1.86 μ0.08 Di, opt = 3.9 Q0.45 . ρ0.23 Di, opt = 3 Q0.36 ρ0.18 Di, opt = 7.6 Q0.36 . ρ0.9 Di, opt = 3 Q0.36 . ρ1.86 μ0.08 Di, opt = 3.9 Q0.45 . ρ0.23 Di, opt = 3 Q0.36 ρ0.18 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method? Sensible heat changes for vapour & liquid are negligibly small Heat of mixing of normal liquid is assumed to be zero Molar latent heat of the two components are equal Reflux is not a saturated liquid Sensible heat changes for vapour & liquid are negligibly small Heat of mixing of normal liquid is assumed to be zero Molar latent heat of the two components are equal Reflux is not a saturated liquid ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases. Running cost of cooling water for condenser Vapour & liquid load both Fixed charges initially Running cost of steam for reboiler Running cost of cooling water for condenser Vapour & liquid load both Fixed charges initially Running cost of steam for reboiler ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The wall thickness for a large high pressure pipeline is determined by the consideration of the Forces exerted by static and dynamic action at bends Temperature stresses Axial tensile stress in the pipe Circumferential pipewall tension Forces exerted by static and dynamic action at bends Temperature stresses Axial tensile stress in the pipe Circumferential pipewall tension ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is Cither A or B; depends upon the I.D. of the pipe More Less Same Cither A or B; depends upon the I.D. of the pipe More Less Same ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Back-trapping in a distillation column results due to Excessive liquid gradient over the tray Low gas velocity High gas velocity Low reflux ratio Excessive liquid gradient over the tray Low gas velocity High gas velocity Low reflux ratio ANSWER DOWNLOAD EXAMIANS APP
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