Please do the second question on Process and instrumentation diagram

Please solve the following problems: 1- Provide the philosophy for sizing the hot water tank, pump, heat exchanger, control valve A. Focus on identifying the fixed variables (Flow, temp, pressure, elevation, etc...), B. State your assumptions, and C. select the right equations/software/design criteria for calculating: - pump head - line size - exchanger area 2- After solving the first problem, please convert the sketch into a Process and Instrumentation Diagram (P\&ID) by adding all the required details (Controls, valves, sizes, additional start-up lines, drains). Please feel free to modify the design as you see fit