Light energy cascade power generation device and system for solar spectrum frequency division and residual light convergence and radiation coupling

Abstract

The invention discloses a light energy cascade power generation device and system for solar spectrum frequency division and residual light convergence and radiation coupling. The device divides solar spectrum radiation into two sections through a frequency division filter, the spectrum radiation with a shorter wavelength is matched with a first-stage photovoltaic cell, the spectrum radiation with a longer wave band is condensed through a light condenser after being reflected, and a structural absorber is heated. A structural absorber with an outer square column and an inner cylindrical cavity is specially designed so as to absorb long-wave radiation after frequency division. A radiator is arranged on the outer wall face of the structural absorber, and secondary photovoltaic cells are arranged on the periphery of the structural absorber. The whole system is formed by periodically arranging a plurality of devices and is supported by a periodic support, gradient conversion power generation of solar energy is achieved through solar radiation spectrum frequency division and residual light spectrum readjustment, and meanwhile the loss of the whole system in the light condensation process is reduced through the design method that frequency division is conducted firstly and then light condensation is conducted. The whole system conforms to the energy gradient utilization principle and has important application value.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, and in particular relates to a solar energy cascade power generation device and system with solar spectrum frequency division and afterglow convergence reradiation coupling. Background technique [0002] With the intensification of global energy consumption, the production of CO 2 Greenhouse gas emissions represented by climate change threaten the sustainable development of human society. At present, countries around the world have proposed their own carbon reduction plans. As an important clean energy, solar energy is rich in resources and non-polluting. [0003] Solar power production mainly includes two ways: photovoltaic and photothermal. Since photovoltaic cells mainly respond to radiation in the visible light and near-infrared bands, there is a problem that the solar radiation spectrum does not match the response band of photovoltaic cells. A large amount of non-convert...

AI Technical Summary

Problems solved by technology

Since photovoltaic cells mainly respond to radiation in the visible light and near-infrared bands, there is a problem that the solar radiation spectrum does not match the response band of photovoltaic cells

A large amount of non-convertible long-wave radiation is wasted, thereby limiting the efficiency of solar photovoltaic conversion

For solar thermal conversion, a higher heat collection temperature is required to improve the thermal power conversion efficiency, and at the same time, the high temperature irreversible loss in the process of concentrating heat will cause energy waste

Images