Solar still is a simple equipment for the fresh water production in regions where scarce and rich solar energy sources. In this paper, unit was built tested south of China to investigate its production. The test results show that affected by average irradiation intensity, averaged at 6.27 kg/day, decreased 1.9 kg/day when daily radiation 236 W/m2. At same time, result because difference between...

today many countries have water shortage problems, so most of them compel to resort to desalination processes. this paper describes the effect of indirect contact freezing by external cooling for desalination of seawater and brackish water. although various types of processes are introduced for desalination and such processes as reverse osmosis (ro) and multi-effect distillation (med) are used ...