A water surface floating condenser solar seawater desalination device

Abstract

This application discloses a solar-powered seawater desalination device with a floating condenser on the water surface, which includes a light-transmitting heat insulation board, a photothermal board, a capillary water-absorbing body, a hydrophobic gas-permeable body, and a condenser from top to bottom; the condenser is externally connected to a fresh water outlet. Water pipes and collection tanks. The light-transmitting heat insulation board is covered on the photothermal board to suppress convective heat transfer loss. The photothermal plate includes a heat conductor and a light absorber covering the surface, the light absorber is carbon black nanoparticles bonded by ethyl cellulose and terpineol, and the heat conductor is a thin aluminum plate. The capillary water absorption body is a hydrophilic porous material that absorbs water from the water body onto the lower surface of the photothermal plate. The hydrophobic air-permeable gas is a polymer porous hydrophobic material, which only allows steam to pass through and prevents water from passing through. The condenser is made of a thin aluminum plate, with aluminum fins inside to enhance condensation heat exchange, and a fresh water outlet pipe is installed at the bottom to transfer the fresh water to the water collection 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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