The invention relates to a photoelectrical complementary
solar water heater which mainly comprises
solar energy thermal-collecting tubes, a
water storage box and a controller. The box body of the
water storage box is provided with at least two connecting seats, each connecting seat is internally provided with a
check valve, the connecting seats are connected with the
solar energy thermal-collecting tubes, a through tube and a U-shaped tube, and the through tube and the U-shaped tube enables the
solar energy thermal-collecting tubes to be connected in series and communicated; each solar energy thermal-collecting tube comprises an inside
glass tube and an outside
glass tube, the inside
glass tube and the outside glass tube are sealed at one port to form vacuum between the inside glass tube and the outside glass tube, and a heat absorption film layer is compounded on the outside wall of the inside glass tube; the connecting seats and the
water storage box are manufactured to form a
whole body; the water storage box mainly comprises a connecting seat, a liner, a shell and insulation materials arranged between the liner and the shell; the box body of the water storage box is provided with a ventilation valve, a water inlet and a water outlet, and the water inlet is connected in series with a water inlet
electromagnetic valve. The invention has the advantages of
high heat utilization rate, basically consistent used
water temperature, no sundry accumulation, difficult scaling, favorable hot water insulation, thermal-collecting tube
frost crack prevention, sensitive control, reasonable structure, wide application range, and the like, and is a new safe and reliable environmental-friendly product.