Foriani, YulianGinting, Maksi2019-04-302019-04-302019-04-30wahyu sari yenihttps://repository.unri.ac.id/handle/123456789/9682Distillation of seawater into fresh water by using cabinet-type tools by utilizing sunlight energy has been successfully used for the experimental method where the stage of manufacture and manufacture of equipment was carried out in March at the Jakarta, Riau. The distillation process of seawater produces fresh water distillates. The sample was obtained from the beach of Nirwana, West Sumatra as much as 200 liters. This sample is processed to obtain distillate by placing the device in an open location which will be exposed to direct sunlight. This sea water distiller is used in appropriate technology-based research that is technology that fits the needs of the people living around the coastal area. This research was carried out for 8 days of observation in sample I, the experimental results showed that the ambient temperature would increase at 12.00 WIB, with the intensity of solar radiation amounting to 251 W/m2 and a brightness index of 68 %. The lowest intensity of solar radiation occurs at 09.00 WIB by 120 W/m2 with a brightness index of 57 % and 7 days of observation in sample II, the experimental results show that the ambient temperature will increase at 15.00 WIB, with the intensity of solar radiation of 156 W/m2 and brightness index of 58 %. The lowest intensity of solar radiation occurs at 11.00 WIB by 115 W/m2 with a brightness index of 51 %. This distillate process produces 42870 milliliters of fresh water that has met consumption standards. The average volume of fresh water obtained per day is 2873 milliliters for 6 hours of research. The highest volume in the study at 12.00 WIB was 7129 milliliters. There sults of this experiment show that the higher the intensity of solar radiation, the higher the ambient teperature and evaporation temperature and the more volume of fresh water obtainedendistillationsea watercabinet typesunlight energyArticle