... pressurized and split solar water heater:solar collect:The collector absorbs solar energy and transmits it to the water tank through ... of vacuum tubes with heat pipe: 14, 16, 18, 20, 24, 30, or 36 units.9.Water capacity: 100L, 150L ... The time of heat insulation: 72h11.High heat effectiveness: Higher than all glass evacuated solar collector tube by 15 Heat pipe split pressure solar water heater