Novel solar seawater desalination system

Abstract

The invention discloses a novel solar seawater desalination system. The system mainly comprises a condensing reflection slot, a seawater desalination device and a circulation water tank, wherein the seawater desalination device is arranged in the middle of the condensing reflection slot and is communicated with the hollow interlayer of the condensing reflection slot through a pipeline; and the circulation water tank is connected with the seawater desalination device through pipelines. The solar seawater desalination system improves energy flux density by using solar energy condensation, recycles water vapor latent heat of vaporization to heat seawater to be evaporated, improves energy utilization efficiency and operating temperature of the system by using the technology that a cooling water pipe recycles residual heat generating desalted water and the like and improves forced-convection heat transfer coefficients by adopting a cooling cover outer wall forced-convection heat transfer mode, and regulating flow velocity of a water pump so as to improve condensation effect of water vapor. The system has the characteristics of high energy utilization efficiency, large desalted water yield, investment saving, low energy consumption, simple structure, convenient operation, easy control and the like and is particularly suitable for low-cost and small-scale production.

Description

technical field [0001] The invention belongs to the technical field of seawater desalination, in particular to a novel solar desalination system. Background technique [0002] Water is the source of life and an irreplaceable precious natural resource for human beings. However, with the continuous development of human civilization and continuous progress of society, the shortage of water resources has become a major problem facing human beings in the 21st century. The situation of water resources in my country is even less optimistic. As one of the 13 water-poor countries in the world, the annual per capita water resources are only 1 / 4 of the world average, and water-deficient cities account for 2 / 3 of the national cities. The "Comprehensive Report on China's Water Resources Strategy for Sustainable Development" released by the Chinese Academy of Engineering pointed out that by 2030, when my country's population increases to 1.6 billion, there will be a water consumption peak...

AI Technical Summary

Problems solved by technology

However, multi-stage flash evaporation technology requires multi-stage air extractors and multiple water pumps to work continuously. The whole system is relatively complicated, with high investment and operating costs and relatively poor reliability.

At the same time, multi-stage flash evaporation technology mainly uses pipeline convective heat transfer. Due to the limitation of the heat transfer area of ​​the pipeline, the amount of fresh water generated is also limited.

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