An Evaporation System Based on Metal Foam Absorbing Solar Energy

Abstract

The invention provides a steam generation system absorbing solar energy, based on a foam metal body. The system comprises a solar evaporation container, a porous foam metal block, a bubble cluster generation device, an air circulating pump and a steam collection device, wherein the surface of the foam metal block is required to be nanosizing treatment, so that solar absorption is enhanced; the bubble cluster generation device supplies stable micro-bubbles into the solar evaporation container; the air circulating pump can circularly drive air to continuously generate bubbles; the steam collection device is used for collecting steam produced by the system. The system enhances light energy conversion and thermal mass transfer processes by coupling absorption effect of a multiple scattering solar body of a porous foam metal nanometer structure through a moisture absorption characteristic of discrete bubble clusters, thereby achieving the purpose of improving the photothermal conversion efficiency and the steam generation efficiency at the same time.

Description

technical field [0001] The invention belongs to the field of renewable energy and provides an evaporation system that utilizes porous foam metal nanostructures to strengthen solar body absorption to drive steam generation. Background technique [0002] Water and energy are two basic elements for human survival. With the rapid increase of the world population and the rapid development of society, people's demand for water and energy continues to increase, resulting in increasingly prominent resource shortages. Since the total amount of traditional fossil energy is limited and non-renewable, and its application will pollute the environment, the development of clean energy is the key to solving the problem of resource shortage in the future. Solar-driven water evaporation is an important way to utilize solar energy on a large scale. The physical process of light-heat-steam conversion is widely used in seawater desalination, fractional distillation, and energy storage power gene...

AI Technical Summary

Problems solved by technology

Nanofluids can bulk absorb solar energy, and the efficiency of light-to-heat conversion is better, but its bulk absorption of solar energy is used to heat up all the water around the nanoparticles, rather than directly used to generate steam, so its steam generation efficiency is low

Nano-membranes require special design and preparation methods to achieve high steam generation efficiency, but the steam generation process is controlled by the free diffusion of steam on the interface, and the diffusion resistance is relatively large. It cannot supply steam quickly and on a large scale, and is not suitable for large-scale industries. application

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