Solar seawater desalination device with water surface floating type condenser

Abstract

The invention discloses a solar seawater desalination device with a water surface floating type condenser. The solar seawater desalination device sequentially comprises a light-transmitting and heat-insulating plate, a photo-thermal plate, a capillary water absorption body, a hydrophobic and breathable body and the condenser from top to bottom. The condenser is externally connected with a fresh water outlet pipe and a water collecting tank. And the light-transmitting heat-insulating plate covers the photo-thermal plate to inhibit convective heat transfer loss. The photo-thermal plate comprises a heat conductor and a light absorber covering the surface, the light absorber is carbon black nanoparticles bonded by ethyl cellulose and terpilenol, and the heat conductor is a thin aluminum plate. The capillary water absorption body is made of a hydrophilic porous material and absorbs water from the water body to the lower surface of the photo-thermal plate. The hydrophobic and breathable body is made of a polymer porous hydrophobic material, only allows steam to permeate and prevents water from permeating. The condenser is made of thin aluminum plates, aluminum fins are arranged in the condenser for enhancing condensation heat exchange, and a fresh water outlet pipe is installed at the bottom of the condenser for transferring fresh water to the water collecting tank.

Description

technical field [0001] The invention belongs to the technical field of seawater desalination, and in particular relates to a solar-powered seawater desalination device with a water surface floating condenser. Background technique [0002] With the rapid growth of the global population and the increasing seriousness of water pollution, the shortage of water resources is becoming one of the major crises facing human society. Although there is a shortage of fresh water, seawater resources are very rich, accounting for about 97.5% of the world's total water resources. Seawater desalination will be one of the most potential ways to solve the freshwater crisis. The current industrial seawater desalination technology is mainly driven by electricity, which consumes non-renewable fossil energy and pollutes the environment. As a renewable energy source, solar energy is used to heat seawater to generate steam and then condense to obtain fresh water. This method has the advantages of c...

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Problems solved by technology

[0007] Aiming at the deficiencies in the prior art, this application provides a solar seawater desalination device with a floating condenser on the water surface, which has a simple structure, can be installed on a large scale, is easy to operate, is driven by all solar energy, and can use water cooling to condense steam efficiently, which solves the existing problems It will pollute the environment, it is not easy to collect, and the energy efficiency of the system is low, which is not conducive to the release of steam condensation heat, resulting in low steam condensation rate and relatively small scale, which is difficult to meet the needs of large-scale seawater desalination. The steam condensation efficiency of solar interface heating seawater desalination system The scale of the solar desalination system and the overall system efficiency are significantly improved, and the ion concentration of the condensed water after seawater desalination meets the World Health Organization's standards for drinking water.

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