Plate and tube type phase-change solar water heater

Abstract

The invention discloses a plate and tube type phase-change solar water heater. The plate and tube type phase-change solar water heater comprises a heat absorbing plate framework, and further comprisesa water supply pipeline, wherein a heat absorbing plate is arranged on the heat absorbing plate framework; a heat conduction pipeline is arranged on the back surface of the heat absorbing plate; a back plate is further arranged on the heat absorbing plate framework; the heat absorbing plate framework, the heat absorbing plate and the back plate define a sealed space; an inner feed box is arrangedin the space; a thermal-insulation material is filled outside the inner feed box; the heat conduction pipeline is a circulating tube, and passes through the inner feed box; an inlet and an outlet ofthe water supply pipeline are formed in the heat absorbing plate framework, the middle section of the water supply pipeline passes though the inner feed box; the inlet is connected with cold water, and the outlet is connected with domestic water. The inner feed box absorbs solar energy in daytime, and storages energy; while hot water is needed, cold water is heated up by the inner feed box, and hot water is output, so that the water heater is suitable for rainy days after a high temperature; and after the inner feed box is heated up, environmental influences at a relatively low temperature onrainy days outside are small, and heat loss is slow, so that the water supply pipeline still can be heated in cloudy and rainy weather.

Description

technical field [0001] The invention relates to the technical field of solar water heaters, in particular to a plate-tube phase-change solar water heater. Background technique [0002] As a clean and pollution-free energy source, solar energy has been widely used at present. As the main equipment for solar thermal utilization, solar water heaters are very important to improve their efficiency. [0003] The heat storage method of the traditional split solar water heater is to store hot water in the water collection tank. There is stagnant water in the water tank for a long time, and a large number of bacteria will be produced, which will cause great safety hazards to people's health. At the same time, it is greatly affected by external temperature changes. The thermal insulation performance is poor, and the temperature loss rate is too fast, resulting in no hot water available in rainy weather. In view of the above defects, further improvement of solar water heaters is needed...

AI Technical Summary

Problems solved by technology

[0003] The heat storage method of the traditional split solar water heater is to store hot water in the water collection tank. There is stagnant water in the water tank for a long time, and a large number of bacteria will be produced, which will cause great safety hazards to people's health. At the same time, it is greatly affected by external temperature changes. The thermal insulation performance is poor, and the temperature loss is too fast, resulting in no hot water available in rainy weather. In view of the above defects, further improvement of solar water heaters is required

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