External condensation-style inclined core-type solar seawater distillation and desalination device

Abstract

The invention relates to an external condensation-style inclined core-type solar seawater distillation and desalination device. The external condensation-style inclined core-type solar seawater distillation and desalination device comprises a solar seawater desalination device, a phase change heat storage system and a heat energy recovery system, wherein the solar seawater desalination device comprises a cavity; a partition plate is mounted in the cavity to divide the interior of the cavity into a condensing chamber and a evaporating chamber; the evaporating chamber is used for evaporating injected raw seawater; a low-temperature seawater condenser coil pipe is mounted in the condensing chamber for condensing vapour; the evaporated high-temperature concentrated seawater enters a heat energy recovery box body through a pipeline and heats the raw seawater in the box body, simultaneously, the heated raw seawater in the condenser coil pipe is injected into the heat energy recovery box body, and the raw seawater in the heat energy recovery box body enters the seawater desalination device through the phase change heat storage system. According to the external condensation-style inclined core-type solar seawater distillation and desalination device, the temperature of the raw seawater is raised by utilizing a plurality of means, the sweater evaporating time is prolonged, and the condensing process of the vapour is accelerated, so that the seawater desalination efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of renewable energy and seawater desalination, in particular to an external condensation type inclined core type solar distillation seawater desalination device. Background technique [0002] The shortage of fresh water resources has always been a problem faced by human beings, especially in remote mountainous areas and islands where electricity is scarce. Solar seawater desalination technology is of great significance to solve the desalination of brackish water in islands with shortage of freshwater resources, remote water-scarce areas and inaccessible power resources. [0003] Solar distillers are suitable for desalination of island seawater and brackish water in remote areas due to their advantages of simple structure, convenient materials, and no need for conventional energy. The disadvantages of low utilization efficiency and high equipment investment have limited its popularization and application in ...

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Problems solved by technology

[0003] Solar distillers are suitable for desalination of island seawater and brackish water in remote areas due to their advantages of simple structure, convenient materials, and no need for conventional energy. The disadvantages of low utilization efficiency and high equipment investment have limited its popularization and application in engineering practice, mainly because the latent heat of condensation of steam is not reused, but is lost to the environment through the cover plate; The natural convection heat transfer mode greatly limits the improvement of its thermal performance; the temperature of the concentrated seawater flowing out of the evaporator is high, and this part of the heat energy cannot be fully utilized; the heat capacity of the seawater to be evaporated in the solar still is too large, which limits the operating temperature increase, thus weakening the driving force of evaporation

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