Single-chamber heat accumulating type fluid focusing solar energy photothermal heating, heat transferring and heat accumulating system

Abstract

The invention provides a single-chamber heat accumulating type fluid focusing solar energy photothermal heating, heat transferring and heat accumulating system, which can realize high-temperature, large-scale, low-cost and high-efficiency solar energy acquisition, heat transfer and heat accumulation, and is suitable for temperature of 10-1500 DEG C. An acquisition device, a photothermal converter, a heat transfer pipe, fluid, a power device and a heat accumulator form a group of solar energy acquisition system; solar energy of the acquisition device is focused on the photothermal converter; the heat transfer pipe is connected with the photothermal converter; the fluid in the heat accumulator is driven by the power device to enter the photothermal converter along the heat transfer pipe to be subjected to heat exchange, the heated fluid enters the heat accumulator along the heat transfer pipe and is in heat exchange with heat accumulating materials, and the fluid is recycled along the heat transfer pipe under the driving of the power device; when heat energy in the heat accumulator needs to be utilized, second fluid is utilized to be in heat exchange with the heat accumulating materials in the heat accumulator, so that acquisition, heat transfer and heat accumulation of the heat energy are realized.

Description

technical field [0001] The invention relates to utilization of thermal energy, especially utilizing fluid to realize thermal energy absorption, storage, exchange and utilization of concentrated solar energy. Background technique [0002] The heat accumulator is a device for storing thermal energy, and the existing heat accumulators are steam type and liquid heat accumulators; [0003] In the field of industrial energy conservation, waste heat is recovered and stored, usually using phase change technology for heat storage, and in the low temperature field using ice storage technology for heat storage; [0004] 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. [0005] In ...

AI Technical Summary

Problems solved by technology

[0004] 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

[0005] 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

[0006] The energy storage power station uses electric energy for storage, especially the electric energy composed of wind power and photovoltaic, because it cannot be stored, it has to be discarded in large quantities, causing a lot of waste

Images