Solar carbon dioxide energy accumulator for carbon dioxide cyclic power generation

Abstract

A solar carbon dioxide energy accumulator for carbon dioxide cyclic power generation mainly comprises a light gathering CO2 energy storage device and a lens energy gathering device. An outlet of the light gathering CO2 energy storage device communicates with an inlet of the lens energy gathering device through a pipeline. The light gathering CO2 energy storage device mainly comprises a support I, an intermediate temperature energy storage mechanism and a reflection mechanism. The reflection mechanism is arranged on the periphery of the support I and gathers sunlight energy to the light gathering face of the intermediate temperature energy storage mechanism. The lens energy gathering device mainly comprises a support III, a high-temperature energy storage mechanism and a convex lens mechanism. The convex lens mechanism is arranged on the periphery of the support III, and the convex lens mechanism gathers the sunlight energy to the light gathering face of the high-temperature energy storage mechanism. According to the solar carbon dioxide energy accumulator, solar energy changing along with longitude and latitude natural terrain and season time in vast countries is conveniently utilized as energy, the occupied land is small, the solar carbon dioxide energy accumulator can be conveniently arranged along with landform changes, investment is small, and the high-temperature energy condition needed for supercritical CO2 cyclic power generation can be met.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, in particular to a solar carbon dioxide accumulator which uses carbon dioxide as a working substance and uses solar energy as an energy source for carbon dioxide cycle power generation. Background technique [0002] Climate change has become one of the issues that affect human survival and development, and a large amount of carbon dioxide emissions are considered to be the main cause of climate warming. As the largest developing country in the world, coal-based primary energy and firepower The secondary energy structure dominated by power generation, with the rapid growth of economic aggregate, the CO of primary energy and secondary energy 2 Emissions are characterized by rapid growth and large volumes. In response to climate change, the development of low-carbon energy, especially renewable energy and new energy, has become a consensus. Solar power generation and super...

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Problems solved by technology

[0003] The supercritical carbon dioxide power generation system developed with the application of CCS technology has significant advantages over traditional thermal power generation systems in terms of system thermal efficiency, total weight, floor space, and pollutant emissions. The current supercritical carbon dioxide power generation system includes heat sources, High-speed turbines, high-speed generators, high-speed compressors, coolers, etc., and their high-efficiency heat exchangers are the basis for the engineering application of supercritical power generation systems. The heat exchange of the critical carbon dioxide test loop mostly uses a printed circuit board heat exchanger (PCHE), which is suitable for high working temperature and high working pressure, and has good expansion ability, which can meet the requirements of isobaric heating of carbon dioxide with a heat exchanger. quality requirements, but the organization is complicated, the investment is large, and a heat exchange device for obtaining heat energy is as high as tens of millions of dollars, which does not match the economic and environmental conditions of the vast rural areas and cities in our country.

[0004] In terms of solar power generation, the solar power generation system using water as the working medium has been maturely applied, and the CO 2 Technical workers at home and abroad have also conducted a lot of research on the solar power generation system as the working medium. The more mature solar heat collection system schemes adopted are trough solar collectors, tower solar collectors, and dish solar collectors. One or a combination of devices, but the above-mentioned scheme occupies a large area and requires a large investment, and the construction of the solar heat collection system has high requirements for site selection. The general rural site cannot meet the requirements of building a solar heat collection system. Moreover, the current The large space field of some solar heat collection systems has a great impact on the ecology, and even birds can't reach it.

[0005] So far, the existing various schemes of using solar energy as energy have high requirements on the site and large investment, and cannot economically provide energy for CO 2 The high-temperature energy required by cycle power generation does not match the complex topography, sunshine conditions and economic conditions of the vast villages and towns in my country. In order to use the solar energy that varies with the natural terrain and seasons of the vast villages and towns, a new method is urgently needed. Develop a solar CO with a small footprint, easy to arrange with changes in terrain and landforms, and low investment 2 accumulator, meeting supercritical CO 2 High-temperature energy conditions required for cycle power generation in order to promote carbon-reducing supercritical CO in vast villages and towns 2 Power generation technology to meet the electricity demand of rural life / production and the needs of employment and income generation

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