Equipment system suitable for rural carbon dioxide cycle power generation with solar energy as energy

Abstract

The equipment system suitable for rural carbon dioxide cycle power generation using solar energy as energy, mainly including solar CO2 energy storage device, steady flow regulator, liquid CO2 storage tank, CO2 high pressure pumping device, turbine / piston expander, generator, heat recovery The solar CO2 energy storage device includes a light-collecting CO2 energy storage device and a lens energy concentrating device. The outlet of the liquid CO2 storage tank is connected with the inlet of the CO2 high-pressure pumping device, and the outlet of the CO2 high-pressure pumping device is connected with the The inlet of the light-collecting CO2 energy storage device is connected, the outlet of the light-collecting CO2 energy storage device is connected with the inlet of the lens energy-gathering device, the outlet of the lens energy-gathering device is connected with the inlet of the steady flow regulator, and the outlet of the steady flow regulator is connected with the turbine / piston expansion The machine inlet is connected. The invention has the advantages of utilizing solar energy as an energy source, stable operation, low self-consumption energy, low investment, and low operating cost.

Description

technical field [0001] The invention relates to the field of low-carbon and energy technologies, in particular to an equipment system that uses carbon dioxide as a working medium and is suitable for rural carbon dioxide cycle power generation using solar energy as an energy source. 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 supercritical c...

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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, there is an urgent need for a new kind of solar energy that is suitable for Rural solar-powered CO 2 The equipment system for cycle power generation requires a small footprint, easy layout with changes in terrain and low investment, so as to promote carbon emission reduction supercritical CO in vast villages and towns. 2 Power generation technology to meet the needs of rural life / production electricity demand and employment and income generation

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