Non-pressure Solar Water Heater Without Assistance Tank

Working Principle：This type uses all-glasses evacuated tubes as the solar collector for absorbing solar energy and transferring it into heat energy. As the different densities of hot water and cold water, the hot water flows automatically upwards while the cold water flows down. The water flowing cycle is created in the tube. And the water in the storage tank is heated from this natural circulation. The hot water pressure of this non-pressure system is from the gravity, so it should be installed on the roof or at least 3-4 meters higher than hot water tap. Or you can install a booster pump to get stronger outlet hot water.TypeVacuum tubeCapacity(L)GrossWeight (KG)20GP/40HQ  Loading Qty(sets)Φ(mm)Length(mm)Qty(pcs)CT-NP02-10581800101005376/181CT-NP02-15581800151507354/132CT-NP02-20581800202009040/95CT-NP02-255818002525011834/80CT-NP02-305818003030013628/67Technical data:Inner tank: SUS 304-2B/0.41mm, Φ360mmOuter tank: Galvanized steel/0.41mm, Φ460mmInsulation Layer: high density polyurethane foam 50mmVacuum tube: 58*1800mm/SS-CU-AIN/ALN or AL-N-AL coatingBracket: Galvanized steel 1.5mm with 27/38/45 degree installing angle.Electrical heating connection(inch): ¾ or 1¼Water connection(inch):½ or ¾NOTE: All the systems are available for the customization.Optional Accessories1.Assistance Tank (filling the cold water into the main tank automatically)2.Booster Pump (adding the hot water out pressure)3.Temperature Monitor (showing hot water temperature inside the main tank)4.Controller SR500 (filling the cold water into the main tank automatically & showing hot water temperature inside the main tank & showing the water level & Controlling the starting time of the electrical heater)5.Electrical Heater (as back-up for cloudy or raining day)