Where Can I Find a Large Concave Mirror for Heating Water?

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SUMMARY

The discussion centers on using a concave mirror or alternative methods to heat water effectively. A participant suggests utilizing a satellite dish as a makeshift concave mirror but expresses concerns about achieving sufficient reflectivity. Another contributor recommends purchasing large Fresnel lenses from Edmund Scientific, which are specifically designed for concentrating solar energy and heating applications. This solution provides a practical approach to the original problem of heating water efficiently.

PREREQUISITES
  • Understanding of solar thermal energy principles
  • Familiarity with concave mirrors and their applications
  • Knowledge of Fresnel lens functionality and specifications
  • Basic skills in DIY projects and material sourcing
NEXT STEPS
  • Research the specifications and applications of Fresnel lenses from Edmund Scientific
  • Explore methods for enhancing the reflectivity of satellite dishes
  • Learn about solar concentrators and their designs
  • Investigate DIY projects for building solar water heaters
USEFUL FOR

Individuals interested in solar energy solutions, DIY enthusiasts, and anyone looking to heat water efficiently using reflective materials.

supersteve921
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Im trying to figure out the best way to heat a about a bottles worth of water, my idea was to get a concave mirror and focus it onto some small radiator like a heater core. The thing is I can't find a large concave mirror, so I was thinking about using a satalite dish but I can't think of a way to make it shiny enough, you guys go any ideas?
 
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Edmund scientific sells giant Fresnel lenses just for this purpose.
 

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