Selection of heat exchanger coefficients

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I would like to ask the teachers: for shell-and-tube heat exchangers, isn’t there usually only one value for the heat transfer coefficient? However, when calculating the area of the heat exchanger, coefficients are required for three different stages – the superheating stage, the condensation stage, and the cooling stage. Typically, I use the coefficient corresponding to the condensation stage, which is the heat transfer coefficient of the shell-and-tube heat exchanger (4000 or 3800 for steam-water systems). But how should I choose coefficients for the other two stages? And how should the value for water be determined? I would appreciate the advice from all the teachers. Thank you! It would be even better if you could provide the coefficient values for other related types of heat exchangers (positive-displacement, semi-positive-displacement, floating coil, and plate heat exchangers).