parabolic solar water distillation
DESCRIPTION
Joel Newmeyer. Parabolic Solar Water Distillation. TEAM MEMBERS. Mark Branner. Andrew Stonebraker. Motivation About 1 billion people do not have access to potable water Make use of the most abundant naturally replenished energy source - PowerPoint PPT PresentationTRANSCRIPT
Parabolic Solar Water Distillation
Joel Newmeyer
Motivation About 1 billion people do not have access to potable
water Make use of the most abundant naturally replenished
energy source Parabolic reflective troughs are fundamentally simple
and effective devices for concentrating and collecting solar energy
Acknowledgements
Sponsor: Akasha Kaur KhalsaAdvisor: Dr. Fletcher MillerSpecial Thanks: Dr. Kee Moon
Overall Goal Efficiently supply at least 2 gallons of potable water per day Create a product that will be relatively easy to establish and operate Purify water from any source Inexpensive Provide clean useful drinking water without interfacing with electricity
System Overview1. Contaminated water enters an absorber tube (Pyrex glass
cover, copper heat pipe) oriented at the focus of a parabolic reflective trough.
2. Heated water exits absorber tube and enters distiller via spray nozzle to increase surface area per droplet to enhance evaporation.
3. Remaining hot water pools and distiller then allows for further evaporation.
4. Vapor is condensed on a cooled condensing surface via heat exchanger oriented on the top of the distiller
1. Heat exchanger uses cool contaminated water flow to cool the condensing surface and preheat the incoming water
5. Condensed potable water drains out of distiller via gravity into a collection tube
Determining Distiller Geometry
Distiller Sectional ViewAssembly
Mark Branner Andrew Stonebraker
TEAM MEMBERS
Conclusion
• 2.5 ft2 base cross section • 0.75 ft high condensing surface
Front view Right view
Distiller inlets/outlets
After a semester of research and calculations, we have settled on a final design of a solar still, a solar still that will maximize potable water production. Some of our future project goals include:
• Refinement and consistency improvements.• i.e. getting a constant film flow of water down the coned heat
transfer surface.• Spray nozzle at heat exchanger inlet.• Fabric material or grooves to distribute the water over
the surface.• Fabrication and assembly of our design.• Prototype testing/data acquisition.