I thought I would post some ...

I thought I would post some more information on this. And if pumps are needed, solar powered motors could be used for 100% green energy. To give everyone an idea of how much fun math is to play with, consider a small greenhouse that can hold 1100 liters (kg's) of water. With a modest 700 watts of solar radiation, it's temperature could be raised by 0.56 degrees Celsius every hour. Heating 100 liters with 700 watts of solar radiation allow for a temperature increase of about 6 degrees Celsius per hour. And with 26 hg's (inches) of vacuum, water boils at 50 degrees Celsius and not 100 degrees Celsius. And if the condensing steam and discharged brine are used to preheat the water needing treatment, then the efficiency of the system would increase. And 700 watts square meter seems to be the low end of solar radiation in the Middle East/North Africa regions. And if the flow rate were matched to the heating of the water, then little energy would be wasted in what might be found to be a purely green concept, basically it would only use sun light to perform work. How ever, a vacuum pump and discharge pump may be needed. Of course, if they were solar powered also... What is convenient is that if 1 square meter is heating the water to boiling temperature, then an area 1.5 square would provide the necessary energy to convert it to steam. When water is converted to steam, it will cool the surface water unless the lost energy is replaced. So basically, an area of 2.5 square meters heating an area of 1 square meter would be in equilibrium with itself. Such a system would be able to generate steam with the temperatures within the system remaining stable. And this would ensure a consistent output. Edited to add a link to a basic diagram. a vacuum pump as well as discharge pump would be needed. What the diagram shows is that when water is evaporated, it can collect on the surface above it. When this happens, it can condense and flow down it towards center. When this happens, it can drain into a fresh water discharge which acts as a preheater. No brine discharge is show but it can circulate through a heat exchanger to assist in preheating water to be purified. With the dimensions given, 20 - 25 liters per hour should be possible with water starting at 25 Celsius and being heated to 50 Celsius in about 26 inches of vacuum. http://i979.photobucket.com/albums/ae278/bessler_supporter/basicdesalinator-purifier_zpsb36e3a58.jpg