Device for seawater desalination based on solar energy heat collection

Abstract

The invention discloses a device for seawater desalination based on solar energy heat collection. Traditional seawater desalination technology is quite low in efficiency with respect to both energy utilization and water yield per unit area. The device of the invention comprises a solar energy heat collection system, a heat transfer oil heat exchange system, a seawater desalination system and a power supply control system; the solar energy heat collection system adopts solar energy trough-type heat collection equipment; the heat transfer oil heat exchange system and the seawater desalination system convert the heat of the heat transfer oil into direct energy for seawater desalination through a heat exchanger; the separation of saline water from fresh water is completed by multiple-effect distillation; the power supply control system supplies working voltage for the heat collection equipment, heat exchange equipment, seawater desalination equipment, all driving motors and control equipment, and controls through a control line. The invention realizes the integration of solar energy heat collection and seawater desalination, wherein the recycling of the heat transfer oil improves the utilization rate of solar energy, and the water yield per unit time is also increased greatly.

Description

technical field [0001] The invention belongs to the technical field of solar energy application and seawater desalination, and relates to a device for desalinating seawater based on solar heat collection. Background technique [0002] Fresh water is one of the basic materials for the survival and development of human society. With the rapid economic development of countries all over the world and the rapid growth and concentration of population, countries all over the world, especially China, have an increasing demand for fresh water. However, the fresh water resources on the earth are very limited, and the lack of fresh water resources has become a global problem. How to obtain fresh water is an important issue for people. Problems to be solved. my country's conventional energy is relatively tight, especially in the vast rural areas, isolated islands and other areas that generally lack conventional energy such as electricity, coal, and oil. Solar energy is a renewable ene...

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Problems solved by technology

Moreover, in the traditional seawater desalination technology, the reverse membrane osmosis method, multi-stage flash evaporation and electrodialysis method cannot solve the high temperature heat collection of solar energy, so the efficiency of energy utilization and water production per unit area is very low.

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