Light concentrating solar seawater distillation system

Abstract

The invention relates to a light concentrating solar seawater distillation system which comprises a light concentrating evaporation chamber, a photovoltaic power generation unit, a condenser, a vapor extraction unit and a non-condensable gas emission unit. The light concentrating evaporation chamber comprises a water tank and a light concentrating device, trace silver nano-particles are added into the water tank, sunlight is converged to the water tank by the light concentrating device, seawater in the water tank absorbs solar energy not suitable for spectral wavebands converted by photo-electricity, the solar energy is converted into heat energy to vaporize seawater, the solar energy transmitting the seawater is converted into electric energy by the photovoltaic power generation unit, the seawater passes the condenser and then enters the water tank to evaporate, vapor in the light concentrating evaporation chamber is extracted by the vapor extraction unit and condensed by the condenser, and non-condensable gas in the condenser is extracted by the non-condensable gas emission unit. Compared with the prior art, light is concentrated by the light concentrating device in a non-tracking manner, absorption of the seawater for the solar energy is enhanced through the nano-particles, part of solar energy is distributed to the photovoltaic power generation unit capable of providing power for a system, and frequency division utilization of the solar energy is achieved.

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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