Can someone help to write a conclusion this is the aim of the experiment

Heat exchangers are devices that allow heat to be transferred from one medium to another. These media can be either a gas, a liquid, or a mix of the two. To prevent mixing, the media may be separated by a solid wall or may be in direct touch. Another application for heat exchangers is to use heat from hot fluid departing the system to pre-heat a cold fluid entering a heated process system. This minimizes the amount of energy required to heat the incoming fluid to operating temperature. Heat exchangers are usually categorized based on their flow arrangement and construction type. In a concentric tube configuration, the hot and cold fluids travel in the same or opposite directions. In the parallel- flow scenario. Hot and cold fluids enter from the same end, flow in the same direction, and exit from the same end. Fluids enter at opposing ends, flow in opposite directions, and exit at opposite ends in the counterflow. The shell and the tube Heat exchangers are the most often employed heat transfer vehicle in industrial process applications. It can transfer enormous volumes of heat in relatively low-cost, serviceable configurations. They can give a great amount of functional tube surface while requiring little floor area, liquid volume, or weight. The goal of this experiment was to collect data on the performance of each heat exchanger while altering the hot and cold fluid flow rates, in order to discover the .most efficient heat exchanger