Zero-consumption seawater desalination facility based on comprehensive utilization of solar energy

Abstract

The invention provides a zero-consumption seawater desalination facility based on comprehensive utilization of solar energy and belongs to the technical field of seawater desalination. The facility comprises a bubbling evaporator, a saline water tank, a fresh water tank and a solar energy utilization device. A solar energy air type heat collector is connected with a bubbler to heat up air entering the bubbling evaporator; a solar heater is connected with the bubbling evaporator to heat saline water in the evaporator; a solar photovoltaic cell panel is connected with a water tank, an induced draft fan, a solenoid and an accumulator through a solar photovoltaic controller to provide power for the whole facility, and the accumulator serves as a standby auxiliary power supply. Once being generated by the bubbler, air bubbles are subjected to heat and mass transfer with saline water in the bubbling evaporator continuously during rising so as to absorb moisture. High-humidity air is introduced to the saline water tank from the bubbling evaporator to achieve condensing and back heating, and vapor is condensed to generate fresh water to flow into the fresh water tank while saline water is preheated. The facility utilizes solar energy comprehensively, is effective, and is simple in structure and easy to promote.

Description

technical field [0001] The invention relates to a zero-energy consumption device using solar energy, and belongs to the technical field of seawater desalination. Background technique [0002] With the development of the world economy and the improvement of people's living standards, the demand for fresh water resources is increasing; and problems such as environmental pollution have led to increasingly scarce fresh water resources. The use of seawater and saltwater lakes to produce fresh water has become an important measure to solve the problem of water shortage. [0003] Following people's attention to this issue, more than ten kinds of seawater desalination technologies have been developed, among which multi-stage flash evaporation, multi-effect distillation, and membrane seawater desalination are widely used. However, due to problems such as large initial investment, serious fouling, or huge energy consumption, these methods have always been unable to produce fresh wate...

AI Technical Summary

Problems solved by technology

Although it can use part of the solar energy, the overall device is complex, bulky, and the overall efficiency is not high, and the effects of solar thermal and photoelectricity are not fully utilized.

[0006] Chinese patent document (CN201220079823.4) proposes a solar natural brine desalinator, which uses solar vacuum tube heating technology to produce fresh water, but it does not use solar air collectors and solar photovoltaic power generation modules, solenoid valves, The supply water pump also needs to consume electric energy, which is far from zero energy consumption.

However, it does not employ a solar air collector to heat the air used for bubbling, resulting in poor overall performance

Moreover, its solar water heater exchanges heat indirectly with seawater through heat exchange coils, the heat exchange efficiency is low, and the problem of scaling still exists

Its solar photovoltaic power generation equipment is not connected to the storage battery. When the solar radiation is weak, all electrical devices will stop working or consume extra energy through the grid, which reduces efficiency.

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