Alga bioreactor system and method based on solar spectrum cascade utilization

Abstract

The invention discloses an algae bioreactor system and method based on solar spectrum cascade utilization, and relates to the technical field of bioreactors. Comprising an improved solar concentrator, an algae bioreactor, an electric wire and an electric power management system, the improved solar concentrator is connected with the algae bioreactor, and the improved solar concentrator is connected with the electric power management system through the electric wire; wherein the improved solar concentrator comprises a light splitting solar receiver, an optical concentrator, an optical fiber and an electric wire; the light splitting solar receiver is connected with the optical fiber, the optical fiber is connected with the optical concentrator, and the electric wire is aligned with the optical fiber and is connected with the optical fiber as a cable bundle. By applying a novel multi-layer solar receiver composed of a spectrum separator and a photovoltaic cell, cascade utilization of solar spectrums is achieved for the first time, meanwhile, algae production is promoted, waste spectrums are utilized for power generation, and the light utilization rate is increased.

Description

technical field [0001] The invention relates to the technical field of bioreactors, and more particularly to an algal bioreactor system and method based on the cascade utilization of solar energy spectrum. Background technique [0002] The use of algal bioreactors on spacecraft as a self-sustaining life support system has been extensively studied in recent years, as these reactors not only produce edible algae for spacecraft occupants, but also eliminate exhaled CO 2 And to supplement the spacecraft cabin. The most basic algae bioreactor design in the prior art is to place the algae / water mixture into a transparent cylinder directly under natural sunlight, to which a liquid flow loop and separator are attached, allowing the algae and other materials produced Cycle in and out of the bioreactor. While this works, when sunlight passes through the algae, its intensity will gradually decrease due to partial absorption by the algae. Therefore, there will be uneven sunlight int...

AI Technical Summary

Problems solved by technology

However, LEDs require energy to be dissipated, and in a spacecraft environment, this energy would typically come from photovoltaic panels, but this photosynthesis is extremely inefficient, making LED solutions unsuitable for spacecraft applications

In addition, the concept of applying solar concentrators and light redistributors has also been proposed before. However, the solar energy utilization efficiency of this solution is very low; algae only use the spectrum of 400-500nm and 600-700nm for photosynthesis, and waste the remaining spectrum unresolved issues, resulting in prohibitively high economic costs for spacecraft applications

All in all, the energy efficiency of the existing algae bioreactor system is very low, which is caused by the uneven distribution of light intensity and temperature, and the algae only use the spectrum of 400-500nm and 600-700nm for photosynthesis

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