A solar seawater desalination device and desalination method powered by fluorescent concentrated light

Abstract

The present invention provides a solar seawater desalination device and desalination method powered by fluorescence concentrating light. The device is composed of a fluorescent concentrator, a hydrophilic material, a freshwater collection pipe, a condensation chamber, a light gas, and a concentrated seawater chamber; Sunlight enters the fluorescent concentrator from the upper part of the device, is reflected by its internal quantum dots and passes along the horizontal direction, and outputs the concentrator at the set light outlet without reflective coating, directly heating the hydrophilic material set near the light outlet The seawater in the water evaporates, and the water vapor produced enters the condensation chamber, moves downward under the action of light gas with low molar mass in the condensation chamber, and is condensed into fresh water in the first-stage fresh water collection tank, released The latent heat heats the seawater in the second-level hydrophilic material, resulting in evaporation again, and repeats the above process to realize multi-level utilization of energy. The seawater in the hydrophilic material is introduced by the capillary effect and the siphon effect, and realizes the circulation movement under the action of gravity, avoiding the formation of salt in the concentrated brine.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, and in particular relates to a solar seawater desalination device and method for energy supply by fluorescent concentrated light. Background technique [0002] Many parts of our country and even the world are short of fresh water, and in many areas short of water often have abundant solar energy and seawater (brackish water) resources, so the significance of using solar energy for desalination of seawater is self-evident. [0003] In the past 100 years, people have made great efforts to use solar energy to desalinate seawater. However, solar desalination technology still cannot be widely used. On the one hand, its economy is too poor to be comparable to traditional industrial desalination systems. On the other hand, the existing solar desalination technology also has the following disadvantages: [0004] (1) The components in the system are seriously separated and the structure...

AI Technical Summary

Problems solved by technology

Complicated pipelines will increase heat transfer resistance and lower system utilization efficiency

[0005] (2) The light concentrating device is bulky, has low light concentrating efficiency, and usually needs to be equipped with a tracking system, which occupies a large area and the economical efficiency of the device is poor

[0006] (3) The seawater installed in the seawater desalination device has a large capacity and high thermal inertia, which reduces the evaporation efficiency and causes corrosion to the equipment

[0008] (5) Restriction in the direction of positive water vapor flow

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