Using a modified digital method for material selection for a shell and tube heat exchanger to be used for pools. Materials to be taken into consideration are Stainless Steel, Plastic , Titanium, Aluminum and Copper. A modified digitial Method needs to be constructed Characteristics of material to be taken into consideration are cost, thermal conductivity, wear, thermal resistance, life span but the digital logic method must point out that the best material will be stainless steel finally a small report why stainless was chosen from the table
