Double-water-tank solar water heating system

Abstract

The invention provides a double-water-tank solar water heating system which comprises a heat collector, a hot water tank and a bracket, wherein the upper end of the heat collector is communicated with the hot water tank; the heat collector and the hot water tank are erected on the bracket; one side of the hot water tank is provided with a cold water tank; the bottom of the cold water tank is communicated with the bottom of the hot water tank through a flow guide pipe; a water supply pipe is communicated with the bottom of the cold water tank; a water pump is arranged on the pipeline of the water supply pipe; a water level probe is arranged in the cold water tank; and the water level probe is connected with a controller used for controlling the on-off of the water pump. The invention has the advantages that the system has simple structure, convenient mounting and long service life; both the hot water tank and the cold water tank are arranged on the same bracket and have the functions of heat insulation and freeze proofing so as to effectively guarantee the quality of water in the water tanks; and during a freezing period, because the distance between the two water tanks is short, a water guide pipe is not easy to freeze, thus hot water in the hot water tank can be used for quickly thawing under the condition of freezing.

Description

[0001] technical field [0002] The invention designs a solar water heater, in particular a double water tank solar water heating system. Background technique [0003] Solar water heaters convert sunlight energy into heat energy, and heat water from low temperature to high temperature, so as to meet the hot water use in people's life and production. Solar water heaters are composed of heat collecting tubes, water storage tanks and related accessories. The conversion of solar energy into heat mainly depends on the heat collecting tubes. The temperature of the surface of the heat collector exposed to the sun is high, and the temperature of the backside of the heat collecting tube is low, and the water in the tube produces a temperature difference reaction. Using the principle of hot water floating up and cold water sinking, the water produces microcirculation to achieve the required hot water. Ordinary solar water heaters are extremely inconvenient to install and use in ru...

AI Technical Summary

Problems solved by technology

Ordinary solar water heaters are extremely inconvenient to install and use in rural areas. The main manifestations are: first, the user must manually fill the solar water tank with water; The water quality deteriorates, and the distance between the water tank and the hot water tank is long. When it freezes in winter, the water in the water tube freezes and is not easy to melt in a short time, which affects the supply of cold water in the hot water tank.

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