Improved heat transmission and accumulation solar heat collection device

Abstract

The invention discloses an improved heat transmission and accumulation solar heat collection device. The device comprises a cool fluid inlet pipe, an annular splitter cavity, a reinforcement heat exchanger tube, a heat collection cavity, a heat accumulator, a hot fluid outlet pipe, a confluence cavity, an insulating layer and a lens; the heat collection device body is sequentially provided with the heat collection cavity, the heat accumulator and the reinforcement heat exchanger tube from inner to outer; the lower end of the reinforcement heat exchanger tube is connected with the annular splitter cavity which is connected with the cool fluid inlet pipe, the upper end of the reinforcement heat exchanger tube is connected with the confluence cavity which is connected with the hot fluid outlet pipe, and the heat collection cavity opening is provided with the lens; an insulation layer is respectively paved outside the cool fluid inlet pipe, the annular splitter cavity, the reinforcement heat exchanger tube, the heat accumulator and the confluence cavity. The device is characterized in that reinforcement fins are increased and the heat accumulator structure is optimized, when the solar thermal collector is integrated with heat absorption, heat accumulation and heat exchange, the pipeline is simplified in design, the heat transmission capacity is reinforced, the radial temperature difference of the heat accumulator is reduced and the reliability of the system is improved.

Description

technical field [0001] The invention relates to a thermal storage type solar heat collecting device with improved heat transfer, which belongs to the technical field of solar heat utilization. Background technique [0002] At present, traditional energy reserves are decreasing day by day, and the problem of environmental pollution is increasing day by day. The development and utilization of renewable energy such as solar energy can not only provide huge energy for human society, but also save conventional fossil fuels and protect the ecological environment. Therefore, the development and utilization of solar energy resources has long been valued by countries all over the world, and has become an important direction of energy development in my country. The stable operation of solar thermal utilization system has brought great challenges. The excess solar heat can be temporarily stored through the solar heat storage system, and released when there is no sunshine or insufficien...

AI Technical Summary

Problems solved by technology

[0003] Currently common solar heat storage systems include phase change latent heat storage and sensible heat storage. In many cases, the arrangement of heat exchange pipes on the surface of the heat storage body does not satisfy the design snowball. It is often required to install heat exchange pipes inside the heat storage body, which greatly increases the processing procedures and difficulties of the heat storage body, and the pipes are too long. The heat transfer temperature difference of the heat exchanger itself also increases, and there are many problems in the maintenance of the pipeline

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