Detailed Product Description1, long company history2, best configuration3, perfect craft.Thermosyphon Nonpressure Solar Hot Water Heating System for Household UseÿÿWorking Principle1, The high quality vacuum tubes absorb the solar ultraviolet rayÿand then heat the cold water in it ;2, The hot water rise in the ttop of tank and the cold sink to the bottom ,so as to form a circulation .ÿDescriptionIt is designed for the special area or country , ÿwhich located near to the equator such as INDIAN, PAKISTANT, THAILAND, EGYPT ETC.ÿSpecificationTypeVacuum TubesCapacity(L)Loading Quantity(20’GP/40’GP/40’HQ)No.Dia. – Len.JJR-150-1800/58-15-NP15?58-1.8m15042/89/105JJR-160-1800/58-16-NP16?58-1.8m16041/88/104JJR-200-1800/58-20-NP20?58-1.8m20035/74/86JJR-240-1800/58-24-NP24?58-1.8m24031/65/77JJR-300-1800/58-30-NP30?58-1.8m30026/54/64