Solar photovoltaic water heater

Abstract

A solar photovoltaic water heater mainly comprises at least one solar photovoltaic generation plate, a water storage tank, a controller and a temperature limiter, wherein the solar photovoltaic generation plates are in series, in parallel or in serial-parallel connection to form a solar power supply and connected with a low voltage electric heating tube installed in an indoor water storage tank through a lead of the solar power supply, a solar photovoltaic plate A is formed by single crystal silicon or polycrystalline silicon cell sheets which are connected in series or in parallel, toughened glass is attached to front sides of the solar photovoltaic generation plates, back plates are positioned at the backs of the solar photovoltaic generation plates, the solar photovoltaic generation plates are integrally fixed by a framework at the periphery, and positive electrode output lines and negative electrode output lines are arranged on the back plates. The solar photovoltaic water heater can totally utilize energy of the photovoltaic electricity to generate heat, outlet hot water has the same pressure as tap water, temperature is identical, thermal insulation of the hot water is good, electric supply can be appropriately used for heating in rainy and snowy days, energy consumption is small, full automatic control is achieved, the structure is reasonable, application is wide, and the solar photovoltaic water heater is safe, reliable, environmental-friendly and energy-saving.

Description

technical field [0001] The invention relates to a solar water heater, in particular to a water heater composed of solar photovoltaic power generation and a water storage tank, belonging to the technical field of solar energy utilization. technical background [0002] Existing solar water heaters are composed of multiple parallel solar collector tubes and a water storage tank. The water storage tank is located at the upper end, and multiple parallel thermal collector tubes are inserted into the lower part of the water storage tank. It works on the principle of sinking and hot water rising. When in use, the cold water is filled in the water storage tank and poured into the heat collecting pipe, and the water in the heat collecting pipe is gradually warmed up by solar radiation for people to use. Since the whole machine is installed on the outdoor roof, and the heat energy generated is by the glass tube, there are the following disadvantages: 1. The glass tube is easily broken...

AI Technical Summary

Problems solved by technology

Since the whole machine is installed on the outdoor roof, and the heat energy generated is by the glass tube, there are the following disadvantages: 1. The glass tube is easily broken by hail and leaks water; 2. The remaining water in the water pipe is wasted during use and the water outlet has no pressure; 3. 1. The thermal insulation effect is poor when installed outdoors, and even the glass pipes and water pipes are broken by freezing; 4. The roof is heavy and affects the appearance; 5. There are potential safety hazards

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