Solar evaporative seawater desalination device

By combining modular evaporation components and high-efficiency materials, the problems of rigid structure and low efficiency of existing solar evaporative seawater desalination devices have been solved, realizing a highly efficient, flexible freshwater production and long-life seawater desalination solution.

CN122102261APending Publication Date: 2026-05-29SEPCO ELECTRIC POWER CONSTR CORP
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Patent Information

Application Number
CN202610470046.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-10
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing solar-powered evaporative seawater desalination devices suffer from rigid structures, limited installation, low efficiency, cumbersome maintenance, and poor durability, making it difficult to meet actual water demand and environmental adaptability.

Method used

The device employs modular evaporation components, condensation collection components, liquid supply circulation systems, and multiple installation modes, combined with high-efficiency materials and precise flow control, to achieve flexible adaptation and efficient operation.

Benefits of technology

It improves solar energy utilization efficiency to over 55%, freshwater output reaches 0.7L/(m²·h), covers a variety of application scenarios, has a water resource utilization rate of ≥98%, a service life of ≥3 years, and reduces transportation and maintenance costs.

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Abstract

The invention relates to a solar evaporative seawater desalination device, and belongs to the technical field of seawater desalination equipment. Comprising a main body frame, a modular evaporation assembly, a condensation collection assembly, a liquid supply circulating system and a fixed bracket, the modular evaporation assembly comprises at least two evaporation units which are arranged in parallel at intervals, every two adjacent evaporation units are connected and fixed through a plurality of Z-shaped distance pieces, and an airflow channel is formed between every two adjacent evaporation units through the Z-shaped distance pieces. The evaporation unit is of a three-layer composite structure and sequentially comprises a light-transmitting substrate, a photothermal conversion layer and a water supply layer. The condensation and collection assembly is arranged at the top of the main body frame and is used for condensing water vapor from the modular evaporation assembly and collecting fresh water; the liquid supply circulation system communicates with the water supply layer of the evaporation unit and is used for supplying liquid to the water supply layer and recycling unevaporated liquid of the evaporation unit. Through the arrangement of the airflow channel formed by the three layers of composite evaporation units and the Z-shaped distance piece, the solar energy utilization efficiency is improved to 55%, and the fresh water output is increased.
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