Vacuum pipe phase change heat storage solar water heater

Abstract

The invention discloses a vacuum pipe phase change heat storage solar water heater, and belongs to the technical field of solar water heaters. The vacuum pipe phase change heat storage solar water heater comprises a pressure control device (4), a manifold (10) and a plurality of solar heat storage pipes (1). The solar heat storage pipes (1) are filled with phase change materials (2). Openings are sealed through end sockets (5). Reserved spaces (3) are formed between the end sockets (5) and the phase change materials (2). U-shaped water pipes (15) are further arranged in the solar heat storage pipes (1). The pressure control device (4) is communicated with the reserved spaces (3) through connection holes (8) in the manifold (10), connection pipes (9) and the end sockets (5) to control the internal pressure of the solar heat storage pipes (1). The U-shaped water pipes (15) in the solar heat storage pipes (1) are connected with a connection water pipe (14) in series or in parallel to form a water way. Due to the fact that heat storage is achieved through the phase change materials, the water storage tank is omitted; due to the fact that the internal pressure of the solar heat storage pipes (1) is controlled, explosion of vacuum pipes (7) due to internal pressure is avoided.

Description

technical field [0001] The invention provides a vacuum tube phase change heat storage solar water heater, which belongs to the technical field of solar water heaters. Background technique [0002] Evacuated tube solar water heaters currently on the market require a water storage tank, resulting in a large building structure load and a large installation area. Moreover, since there is water in the solar circulation pipe for a long time, it is necessary to prevent the pipe from freezing and cracking in winter in cold regions. Because the pipes and valves of solar water heaters in contact with water are prone to freezing and cracking of pipes under the action of freezing and expansion, and the valves cannot be used when they fail, or even damaged, causing water leakage. Another problem is hygiene. The water in the solar hot water tank starts to be replenished before it is exhausted, so that part of the water accumulates in the water tank of the water heater for a long time an...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a vacuum tube phase change heat storage solar water heater; it has the function of controlling the internal pressure of the solar heat storage tube and solves the problem of vacuum tube bursting

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