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  • Accumulation of fog on rear side of front glass of cars

    Discussion in 'The main mechanical design forum' started by prashanthbs, Sep 25, 2010.

    1. prashanthbs

      prashanthbs Member

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      Dear all,
      Accumulation of fog on rear side of front glass of cars is a problem especially while driving through rains.
      Can a simple mechanism/equipment be thought of to wipe off the fog?
       
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    3. Michael

      Michael Active Member

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      Most cars employ heaters, to warm up the glass........see, fog happens on windows (or even out in nature for that matter) when warm moisture in the air touches cold glass; it cools down, forming condensate, hence why you see the fog on the windows...now you perhaps could design a wiping system that immediately rids the fog, because heating will take a little longer to rid the fog.
       
    4. GarethW

      GarethW Chief Clicker Staff Member

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      A heater system might be the best approach. It might be better to come up with a faster version of that instead of devising a mechanical system.

      The other option could be a chemical coating... Any chemical engineers/surface treatment experts here?
       
    5. DesignTechnologist

      DesignTechnologist Member

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      RainX makes a product that uses an anti-fogging agent. I've used it a couple of times.

      Years ago there used to be a putty stick that you spread over the windshield and it didn't leave a residue. It worked pretty well but I can't find the name. I'm sure there are other products out there that do the the similar thing. Anyone else know of any great anti-fog products?
       

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