[HN Gopher] Enlil: Wind turbine designed to harvest energy from ...
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       Enlil: Wind turbine designed to harvest energy from passing
       vehicles
        
       Author : amichail
       Score  : 4 points
       Date   : 2022-12-02 17:45 UTC (5 hours ago)
        
 (HTM) web link (devecitech.com)
 (TXT) w3m dump (devecitech.com)
        
       | tromp wrote:
       | Video says it generates approximately 1KW/h. I guess they mean
       | 1KWh/h. Which is a dumb way to say it generates 1KW...
        
       | daVe23hu wrote:
       | could use a safer method.... meaning accidents to close proximity
       | passing vehicles with wind turbine blades... I see lawsuits
       | 
       | how about piezoelectric cells that utilize the passing weight
       | differentials in the road bed ---- load/unload/load/unload
       | etc.... these cells work on the principle of alternating
       | mechanical stress....
        
         | Oxidation wrote:
         | Or just burn the fuel directly in a CHP plant and don't do it
         | in an inefficient system using an engine and a very complicated
         | indirect mechanical coupling via the roadbed.
         | 
         | Doubly so for electric cars. Imagine the losses in generating
         | power, distributing it, charging a battery, running a motor,
         | moving road or air, catching a few fractions in a turbine,
         | generating electricity again and then transmitting _that_.
         | 
         | All these schemes are a cross between a Homer Simpson plan,
         | Wile E. Coyote, Rube Goldberg and Troll Physics memes, angling
         | for some greenwashing overspray capital(....)
        
       | isthispermanent wrote:
       | How much energy can one of these things generate in a year?
        
       | Someone wrote:
       | So, it takes energy out of the wind induced by driving cars.
       | 
       | I think that must mean that it slows down that wind, decreasing
       | the benefit other cars have driving in the wake of other cars.
       | 
       | I think the net effect will still be positive (especially on
       | roads with traffic in two directions close to each other), but
       | still, the energy has to come from somewhere, and I don't think
       | _all_ of it comes from wind that wouldn't help other cars driving
       | along the same path.
       | 
       | So, what's the effect on energy usage of the cars?
        
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       (page generated 2022-12-02 23:02 UTC)