A solar thermal-electrical-chemical comprehensive utilization system

Abstract

The invention provides a solar thermal-electrical-chemical comprehensive utilization system. A first electrode of a photon-reinforced thermo-electronic emission device is attached to a heating surface of a chemical reactor; a second electrode is towards a light condensation device; electric energy converted by the photon-reinforced thermo-electronic emission device is output outwards; and thermal energy converted by the photon-reinforced thermo-electronic emission device and the heating surface of the chemical reactor drives the chemical reactor to generate a chemical product, so that the thermal energy is converted into chemical energy. According to the solar thermal-electrical-chemical comprehensive utilization system provided by the invention, loss of available energy, which is caused by direct conversion from high-grade solar energy to low-grade thermal energy, is reduced; energy utilization efficiency is improved; the grade of the thermal energy is promoted to the grade of the chemical energy; system efficiency is promoted; all-weather power supply and stable output of the electric energy are implemented; the solar thermal-electrical-chemical comprehensive utilization system can work in an electric energy stable output mode, a chemical energy output mode and an electric energy and chemical energy parallel output mode; flexible conversion of the light energy, the thermal energy, the electric energy and the chemical energy is implemented; and the solar thermal-electrical-chemical comprehensive utilization system is rich in energy supply variety and flexible and adjustable in proportion.

Description

technical field [0001] The invention relates to the technical field of renewable energy, in particular to a solar thermal-electrical-chemical comprehensive utilization system. Background technique [0002] Solar energy is considered to be one of the most promising renewable energy sources. At present, the mainstream solar energy utilization technology is solar thermal utilization technology and solar photovoltaic utilization technology. [0003] Solar thermal utilization technology first converts solar energy into thermal energy, and then utilizes the thermal energy. Because electric energy and chemical energy occupy an important position in the energy structure and have excellent characteristics such as easy transportation and use, solar thermal power generation technology and solar thermochemical technology have been widely studied. However, since the high-grade solar energy is directly converted into low-grade thermal energy in the process, a large irreversible loss is ...

AI Technical Summary

Problems solved by technology

Due to the instability of the thermal energy of the device caused by the instability of solar energy and the small size of the device, it is a huge challenge to use this thermal energy as heat energy for a heat engine; due to the low efficiency and high cost of thermoelectric devices, the use of this thermal energy through thermoelectric devices has small benefits and low cost. high

[0007] It can be seen that the existing technology has the following problems in the process of converting solar energy into electrical energy: (1) solar thermal technology directly converts high-grade solar energy into low-grade thermal energy, resulting in large irreversible losses and low efficiency; (2) solar photovoltaic The technology is limited by its own working principle and technical level, the efficiency is low, and the waste heat generated is large; (3) The photovoltaic photothermal comprehensive utilization technology based on the utilization of photovoltaic waste heat, due to the low operating temperature of photovoltaic cells, the waste heat generated is low in temperature and low in grade , the development is limited; (4) The power supply of photon-enhanced thermionic emission technology fluctuates violently, and it is impossible to realize all-weather power supply, which is easy to have an impact on the power grid; The size of the device is small, which does not match the existing thermal engine system; (6) Using thermoelectric devices to enhance the thermal energy of thermal electron emission devices with photons has a small improvement in system efficiency, and it still cannot solve the problem of violent power supply fluctuations and inability to supply power around the clock

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