I am currently working on my college project about the design and optimization of plate heat exchanger. However, i have no idea where to start the project. Here is my first thought: - I set the hot and cold fluid to be water, 90 degC for the hot inlet and 30 degC for the cold inlet. - 50mm inlet and outlet portholes. - 500mm height and 300mm wide for the plate ( 500x300 is the full dimension of the plates). I did some research about the plate and got that the plate have chevron corrugation which help in heat transfer, while the corrugation inclination angle has a range of 25 deg - 65 deg. I also found that the design must consider the pressure, mass flow rate, fluid velocity and many other parameters. I am not sure how to begin the design and what parameters should I emphasize on. Besides, since the PHE is designed by myself, is that possible to further optimize it? p/s: I have no idea about the difficulty when i choose this title. Need a lot of helps on my project.