Integrated tower solar thermal power generation unit employing quicksand to store and transfer heat

Abstract

The invention discloses an integrated tower solar thermal power generation unit employing quicksand to store and transfer heat, and a tower solar thermal power generation unit built by 'quicksand' instead of conduction oil, fused salt or gas and the like to transfer and store heat. The device adopts fluid characteristics of the 'quicksand', and has the characteristics of thermostability, zero pressure, small thermal resistance and low cost of the 'quicksand'; and superheated steam is generated by sensibile heat and high-temperature air carried by the quicksand when flowing through a vapor generator to push a steam turbine generator to generate electricity, therefore, the construction cost of a tower solar thermal power generation unit is reduced by integral design, and a technological base is established for final implementation of parity power generation. The device belongs to the technical field of solar thermal electric power generation.

Description

technical field [0001] The invention relates to a tower-type solar thermal power generation device established by using "quick sand" instead of heat-transfer oil, molten salt or gas and other heat-transfer and heat-storage working fluids. The device makes full use of the fluid characteristics of "quick sand", taking into account the characteristics of "quick sand", such as high temperature resistance, no pressure, small thermal resistance and low cost, and reduces the construction cost of the tower solar thermal power generation device through an integrated design. Power generation lays the technical foundation. The device belongs to the technical field of solar thermal power generation. Background technique [0002] There are four main types of solar thermal power generation technology, and the trough solar thermal power generation technology is the most widely used at present. Thermal power generation technology has also made great progress. Especially with the successf...

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Problems solved by technology

From these assumptions, it is not difficult to see that the method of directly heating the scattered solid particles through solar radiation is actually very impractical, especially the window design of the tower receiver is very small, and it is very difficult to gather the light to a small enough size. And because the inherent heat loss of the receiver opening itself is very large, if the heat loss is only exacerbated by the indirect conversion into high-temperature air by heating the solid particles, it will be difficult to achieve the design goals with these methods

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