Thesis Solar Still

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Making a solar still is a very simple science experiment to try with your kids.

One of the first approaches to solar vapor generation was to use nanoparticles suspended in water, or nanofluids, to localize solar absorption to near the evaporation surface.

This approach reduces the temperature drop between the heat generation site and the evaporation surface, increasing the evaporation rate.

By reconfiguring the device, steam at 100°C or vapor at 70% efficiency could be produced.

The basic steam generator was then improved and adapted to reject excess salts left behind from vapor formation.Exacerbating this problem is continuing urbanization, which stresses local water supplies further.The two problems of energy and water are inextricably tied together.This thesis first explores the vapor generation mechanisms in nanofluid-based solar vapor generation, and develops a small-scale nanofluid-based solar receiver that could generate vapor at 70% efficiency.A theory was developed to show how nanoparticle suspension could affect the nanofluid transient performance.Put a glass jar in the center of the bowl, and push it down.You do not want to get any of the salt water into the jar, so make sure the water is not too full in the bowl. Put a rock in the center to weight it down and allow the water to fall into the jar. What happens is the water evaporates and collects on the plastic wrap.Taste it, and the water will not taste salty, but fresh. (Creative Publishing International, 2011) by Eric Smith contains how-to instructions for many achievable, clever projects you can make and install in order to create your own solar lifestyle. The following excerpt is taken from the chapter, “Solar Still.”DIY Solar Projects.We made ours with just a few common household items.The great thing about this project is that it would be useful to know how to do in nature if you had no fresh water to drink or in an emergency situation.

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