Hey everyone :) I am a Tunisian Mechanical engineer student, doing my first practical internship. I need to find a way to cool water, that isn't expensive. I have 'ambient heat' water that comes from an outdoor pool, then it goes to 3 different compressors, in order to cool them, then that same water goes back to the outdoor pool... and so on. I need to have a system that cools the water before it's arrival to the compressors. I don't really know from what to start, what to read. It needs to be simple and not expensive. Many thanks !