Solar energy storing and heating system

Abstract

The invention discloses a solar energy storing and heating system. The solar energy storing and heating system comprises a heat collecting unit. The heat collecting unit and a heat storing unit connected to user constitute a circulation loop on which a sub circulating pump is arranged. The heat storing unit comprises an outer jar and an inner jar which is sealed and nested together, wherein an insulator is arranged between the inner jar and the outer jar, the outer jar is equipped with an external tube, the inner jar is connected with an internal tube which is plug-in mounted in the external tube at intervals. The external tube is equipped with a sealing cover by way of bolt joint, wherein the sealing cover is equipped with a heat insulating and sealing element therein which cooperates with the internal tube and the external tube in a pressed and sealed way, the heat insulating and sealing element is fixedly equipped with an inlet tube and an outlet tube which is connected with a heat supply tube and a heat returning tube respectively, and a vacuum unit which keeps the cavity between the outer jar and the inner jar in a vacuum state is arranged on the outer jar. The solar energy storing and heating system has a reasonable structure, which is capable of exchanging heat with solar energy and storing heat energy after heat exchange with a long time, and especially suitable for collecting and storing heat in summer and supplying heat in winter.

Description

technical field [0001] The invention relates to a solar energy storage heating system. Background technique [0002] Solar energy (Solar Energy) generally refers to the radiant energy of sunlight, which is generally used for power generation and heat exchange in modern times. Since the formation of the earth, organisms have mainly survived on the heat and light provided by the sun. Since ancient times, humans have also known to use sunlight to dry objects and use it as a method of preserving food, such as making salt and drying salted fish. But with the reduction of fossil fuels, there is an intention to further develop solar energy. There are two ways to utilize solar energy: passive utilization (photothermal conversion) and photoelectric conversion. Among them, the basic principle of photothermal conversion is to collect solar radiation energy and convert it into heat energy through the interaction with matter for utilization. At present, the most widely used solar coll...

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Problems solved by technology

[0004] However, solar energy utilization also has the following disadvantages: (1) Dispersion: Although the total amount of solar radiation reaching the earth's surface is large, the energy flux density is very low

Therefore, when using solar energy, if you want to obtain a certain conversion power, you often need a set of collection and conversion equipment with a relatively large area, and the cost is relatively high.

(2) Instability: Due to the limitation of natural conditions such as day and night, season, geographical latitude and altitude, as well as the influence of random factors such as sunny, cloudy, cloud and rain, the solar irradiance reaching a certain ground is intermittent However, it is extremely unstable, which makes the large-scale application of solar energy more difficult.

[0005] At present, common solar heat exchange or heating systems generally include a heat collection unit that converts solar energy into heat energy. The heat collection unit heats the heat medium and supplies it directly to the user. Such a heat exchange or heating system is simple in structure and low in cost. However, Since there is no special energy storage device, it can only be used during the daytime, instant heat, and can only be used during periods of good light conditions, so the use is limited

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