Heat Exchanger using E-NTU method

E-NTU method used to solve the heat exchanger problem for various heat exchanger types (Eg. parallel flow, counterflow, N-shells, etc.). The function plots the actual 1D temperature profile of the heat exchanger and not the linear profile.
Inputs: Temperature, mass flow rate, and specific heats of both the fluids. The heat exchanger area and total heat transfer coefficient are also constants. It won't be too difficult to model the heat transfer coefficient based on the material and wall thickness though.
Outputs: Temperature of both fluids at the outlet, Heat exchanged, and the non-linear temperature profile.