Zoning circulation heating phase change heat storage solar water heating system

Abstract

The invention discloses a zoning circulation heating phase change heat storage solar water heating system. The zoning circulation heating phase change heat storage solar water heating system comprises a phase change heat storage solar water heater and a heat preservation box. A cold water box and a plurality of heat storage boxes are arranged in the heat preservation box. A water supply pipe extending into the heat preservation box is arranged at the water outlet end of the phase change heat storage solar water heater. A first water pipe connected with the water supply pipe is arranged on the top of each heat storage box and provided with a first electromagnetic valve. A second water pipe connected with a water inlet pipe is arranged at the bottom of each of the cold water box and the heat storage boxes. Each second water pipe is provided with a second electromagnetic valve. By means of the above manner and the zoning circulation heating phase change heat storage solar water heating system, through control over independent opening and closing of the first electromagnetic valves and the second electromagnetic valves, the phase change heat storage solar water heater is used for heating stored water in single heat storage boxes, heating of other heat storage boxes is not influenced during using, and constant circulation heating is achieved.

Description

technical field [0001] The invention relates to the field of solar water heaters, in particular to a phase-change thermal storage solar water heating system for zoned circulation heating. Background technique [0002] Phase change energy storage technology can store energy in phase change materials in the form of latent heat of phase change, and realize energy conversion between different time and space. Utilizing the phase change latent heat of phase change materials to realize energy storage and utilization is helpful to improve energy utilization efficiency and develop renewable energy. It is a very active frontier research direction in the fields of energy science and material science in recent years. Compared with sensible heat energy storage technology, phase change energy storage technology has the advantages of high energy storage density, small size, constant temperature control, remarkable energy saving effect, wide selection range of phase change temperature and e...

AI Technical Summary

Problems solved by technology

[0003] The water storage tank of the existing phase-change heat storage solar water heater adopts a single structure, and the hot water in the water storage tank is circulated and heated by the phase-change heat storage solar water heater. When the hot water in the water storage tank is exported and used as domestic water, it cannot Circulating heating, otherwise it will lead to the problem of uneven water supply temperature, low efficiency, and it is difficult to reach a high water supply temperature when the light intensity is low, and the flexibility of use is poor

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