Hi, we are running experiments with solar power; any inputs on below problem are highly appreciated. TNX Robby Project: We are experimenting how to maximize evaporation, using Solar Power. We have set up parabolic dishes with a fixed focus (Scheffler Reflectors). Each reflector can produce 3,4 KWh Thermal. A closed vessel having 300 liter capacity is filled with 200 liter of water. The vessel has an opening on top to which a pipe is connected. The pipe is connected to a vacuum pump which is producing a constant vacuum of 0,5 bar. The surface of the water inside the vessel is 1 square meter. The vessel is heated constantly with 3,5 kWh thermal (one reflector). The water evaporates and the vapor is "sucked out" via the vacuum pump. We are running a test series and will get the actual results. How can we do the theory? (we are more the hands on type of guys) Question 1.) How to calculate the evaporation rate? Question 2.) How can one maximize the evaporation, keeping the heating rate constant, and the vacuum constant at the same levels?