A Concentrating Solar Seawater Distillation System

Abstract

The invention relates to a concentrating solar seawater distillation system. The system includes a concentrating evaporation chamber, a photovoltaic power generation unit, a condenser, a steam extraction unit and a non-condensable gas discharge unit. The concentrating evaporation chamber includes a water tank and a concentrator, and the water tank A small amount of silver nanoparticles are added to the water tank. The concentrator gathers the sunlight to the water tank. The sea water in the water tank absorbs the solar energy that is not suitable for the photoelectric conversion spectrum band and converts it into heat energy to evaporate the sea water. The photovoltaic power generation unit converts the solar energy that passes through the sea water into electrical energy. The seawater enters the water tank for evaporation after passing through the condenser, the steam extraction unit extracts the water vapor in the light-concentrating evaporation chamber and condenses it through the condenser, and the non-condensable gas discharge unit sucks the non-condensable gas in the condenser. Compared with the prior art, the present invention realizes non-tracking concentration through the concentrator, strengthens the absorption of solar energy by sea water through nanoparticles, and distributes part of the solar energy to the photovoltaic power generation unit that can provide power for the system, realizing solar energy frequency division utilization.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a concentrating solar seawater distillation system. Background technique [0002] Seawater desalination is an effective way to solve the problem of water shortage, but seawater desalination consumes a lot of energy. If traditional energy is used, it will not only increase the current social energy demand, but also aggravate the current environmental crisis. Solar energy is clean, non-polluting, ubiquitous, abundant and permanent, so using solar energy to desalinate seawater is a clean and effective measure to alleviate the current shortage of fresh water resources. [0003] At present, in the technology of seawater distillation using solar energy, the active distillation system has outstanding advantages over the traditional passive distillation system in terms of water production and solar energy utilization. The active solar distillation system refers to a solar ...

AI Technical Summary

Problems solved by technology

However, the photoelectric conversion rate of photovoltaic cells represented by crystalline silicon is relatively low, and only 12% to 20% of solar radiation energy is converted into usable electrical energy, which greatly limits the utilization rate of solar energy.

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