You are required to solve some design problems for a one$-$shell two$-$passes shell$-$and$-$tube heat

exchanger to cool down hot reaction products dissolved in water $($you can assume properties for

water$).$ For that purpose,

Find empirical correlations and a method to calculate shell side convection heat transfer

coefficient and overall heat transfer coefficient and answer the following questions

a$)$ How do the convection heat transfer coefficients depend on mass flow rate or Re$?$

b$)$ Why baffles are used in shell$-$and$-$tube type heat exchangers?

c$)$ What kinds of flow you have inside the shell with baffles?