Trough solar solid particle pulse driving heat exchange and heat transfer system

Abstract

The invention provides a trough solar solid particle pulse driving heat exchange and heat transfer system. The trough solar solid particle pulse driving heat exchange and heat transfer system comprises a solid particle pulse driving pump and a solar trough collection system. Solid particles are driven by the solid particle pulse driving pump to enter a solar light-heat converter at a focal point of the solar trough collection system along a solid particle ascending pipeline; the temperature of the heated solid particles converted through the solar light-heat converter reaches 300-1000 DEG C; then the solid particles enter a heat storage heat exchanger along a descending pipeline; heat exchange is conducted between the heat storage heat exchange and working media used for power generation, so that the temperature of the solid particles is decreased to 10-200 DEG C; the low-temperature solid particles are driven by the solid particle pulse driving pump to enter the solar light-heat converter again, so that high-temperature collection, heat transfer, heat exchange and heat storage are achieved. The trough solar solid particle pulse driving heat exchange and heat transfer system can achieve high-temperature, large-scale, low-cost and high-efficiency collection and heat transfer and is suitable for working at the temperature of 10-1500 DEG C.

Description

technical field [0001] The invention relates to utilization of solar thermal energy, in particular to realizing line-focused solar heating, heat transfer and utilization by using solid particles. Background technique [0002] In the field of solar energy, molten salt is used to store heat. Although molten salt can achieve high temperature storage, it needs heat energy to heat it because it needs to be transformed from solid to liquid. At the same time, there are problems with the toxicity, economy, and safety of molten salt. , so the use of molten salt heat storage is limited. [0003] In the field of solar energy, air or other gases are also used for heat storage, but their thermal fusion is small, and large-scale thermal energy storage cannot be realized. [0004] For the trough solar concentrating system, molten salt is usually used for heat transfer, and the solar collection tube usually uses stainless steel as the key light-to-heat converter, and molten salt flows insi...

AI Technical Summary

Problems solved by technology

[0002] In the field of solar energy, molten salt is used to store heat. Although molten salt can achieve high temperature storage, it needs heat energy to heat it because it needs to be transformed from solid to liquid. At the same time, there are problems with the toxicity, economy, and safety of molten salt. , so the use of molten salt heat storage is limited

[0003] In the field of solar energy, air or other gases are also used for heat storage, but its thermal fusion is small, and large-scale thermal energy storage cannot be realized

[0004] For the trough solar concentrating system, molten salt is usually used for heat transfer, and the solar collection tube usually uses stainless steel as the key light-to-heat converter, and molten salt flows inside, but the disadvantages of this structure are obvious, such as energy consumption, toxicity, and safety There are obvious deficiencies in economy

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