The Research On Enhancing The Productivity Of Solar Still Using Micro-nanoparticle

Water is a very important resource for humans,but 97.5% of the water on the earth is seawater,and only 2.5% is fresh water.In the current shortage of fresh water,it is very urgent to develop desalination technology.Solar energy is a green and clean energy source.The use of solar energy for seawater desalination is very promising.However,traditional solar stills are generally inefficient,and the use of nanotechnology to improve the evaporation efficiency of solar stills has become a hot research topic.This paper studies the use of capillary materials and the attachment of micronanoparticles to improve the evaporation efficiency of solar stills.A floating thermal localized indoor solar distiller experimental device was designed and built to study the effects of different micro-nanoparticles and their different attachment methods on capillary materials to improve evaporation efficiency.The micro-nano particles such as graphite,copper oxide and carbon nitride were attached to the hemp capillary material by simple application,and the corresponding evaporation rate was recorded and measured.The results show that the evaporation efficiency of the bulk water using the capillary material is 40% higher than that of the bulk material without the capillary material.When attaching micronanoparticles,the evaporation efficiency of black,particle-sized micron-sized graphite,molybdenum disulfide,and carbon nanotubes can reach 80%,which is about 23% higher than that of using only capillary materials,and the choice of application materials is not affected.Type restrictions.By simply applying micro-nanoparticles,high evaporation efficiency can be achieved,the method is simple and low-cost,and the materials can be recycled and reused.In addition,the effect of adhesion by microwave or HI-reduced graphene particles on capillary materials with different fluff structures by chemical coating was investigated.The composition of the three types of capillary materials is ethylene terephthalate,but has a different structure.The results show that the 3rd capillary material has fine fluff and can attach more graphene nanoparticles.The evaporation efficiency is the highest after attaching graphene,which is 77.8%.The chemical coating method can more uniformly and stably adhere the nanoparticles to the fibers of the capillary material than the simple coating method,thereby effectively increasing the evaporation efficiency.And the experimental results show that the HI reduction method can be to high-quality graphene morphology and more attached particles,and the evaporation efficiency is higher than that of microwave reduction.This experimental work provides a simple and effective way to use nanotechnology to improve the efficiency of solar distillers and to provide a new idea for designing low-cost and high-efficiency solar distillers.