Process Equipment and Plant Design Ratio of tube length to shell diameter for a shell and tube heat exchanger is 4 : 1 to 8 : 1 for liquid-liquid exchanger < 4 : 1 for gas-gas exchangers 8 : 1 to 12 : 1 for both liquid-liquid and gas-gas heat exchangers Both B & C 4 : 1 to 8 : 1 for liquid-liquid exchanger < 4 : 1 for gas-gas exchangers 8 : 1 to 12 : 1 for both liquid-liquid and gas-gas heat exchangers Both B & C ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The clearance between two tubes in a shell and tube heat exchanger is known as 'ligament', whose minimum value is __________ the outside diameter of the tube, but in no case it should be less than 4.5 mm. Equal to Half Three fourth One fourth Equal to Half Three fourth One fourth ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The ratio of down take area to cross-sectional area of the tube, for calendria type evaporator ranges from 2 to 2.5 1 to 1.5 1.5 to 2 0.5 to 1 2 to 2.5 1 to 1.5 1.5 to 2 0.5 to 1 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design for couplings and unions would be 200 Negligible 350 60 200 Negligible 350 60 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. Higher Same Lower Unpredictable Higher Same Lower Unpredictable ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to 25 cms 5 cms 40% of the I.D. of the shell I.D. of the shell 25 cms 5 cms 40% of the I.D. of the shell I.D. of the shell ANSWER DOWNLOAD EXAMIANS APP
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