Solar desalination device

Abstract

The invention provides a solar energy sea water desalination device and relates to the field of solar utilization and sea water desalination and aims to improve the productivity of sea water desalination adopting solar energy distillation. The technical scheme is as follows: a heat-insulated double-layer structure made of material with poor thermal conduction is provided and the clearance between the two layers is vacuumized; a water container encircled by heat dissipating surface is arranged on the inner side of the inner layer of the double-layer structure; a water inlet pipe is positioned at the bottom of the water container; a flow guiding ditch is formed between the outer layer of the heat dissipating surface and the inner side of the inner layer of the double-layer structure; the flow guiding ditch is a spiral circular structure; the condensed water is driven by the flow guiding ditch to flow into a water outlet pipe at the lower part in a spiral manner; a heat absorber plate is arranged at the position 1-5 cm lower than the liquid level of the water container and a through hole is formed in the center of the absorber plate. The solar energy sea water desalination device has the benefits that the device can suspend on the sea, the liquid level is maintained in a constant state; the water inlet pipe at the bottom promotes the sea water salinity in the water container to be in a constant state; the contact time of the condensed water and the heat dissipating surface is prolonged by the flow guiding ditch and the contact area of the condensed water and the heat dissipating surface is enlarged due to the flow guiding ditch; as the double-layer structure is vacuumized, the energy dissipation is reduced, the absorber plate promotes the heat absorption of the sunlight and the sunlight irradiation depth is lowered.

Description

technical field [0001] The invention relates to the fields of solar energy utilization and seawater desalination. Background technique [0002] In "Solar Seawater Desalination Principles and Technology, First Edition in January 2013, p9" edited by Zheng Hongfei and published by Chemical Industry Press, the fourth subsection "Solar Distillation" of "Section 4 General Seawater Desalination Method Overview", its main The disadvantage is that the light surface and the condensation surface are the same, and the heat released by the condensation of water vapor will be lost in large quantities, resulting in low yield. Contents of the invention [0003] In order to make full use of solar energy and improve the yield of seawater desalination by solar distillation, the invention proposes a novel solar desalination device. [0004] The technical solution adopted by the present invention to achieve the purpose of the invention is: a solar desalination device, mainly composed of a dou...

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Problems solved by technology

[0002] In "Solar Seawater Desalination Principles and Technology, First Edition in January 2013, p9" edited by Zheng Hongfei and published by Chemical Industry Press, the fourth subsection "Solar Distillation" of "Section 4 General Seawater Desalination Method Overview", its main The disadvantage is that the light surface and the condensation surface are the same, and the heat released by the condensation of water vapor will be lost in large quantities, resulting in low yield

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