Bruce and others, In your example of water going through a Hydro power plant, the water does lose energy, but you do not care about that usually as just running down in the stream the water loses the same energy so harvesting it is beneficial, because there is no purpose for the speed of water running down a stream - in fact, often you want it to slow down to reduce erosion.
Cars running down a freeway *do* have a purpose in maintaining their speed. Taking energy away from the car is detrimental and demands additional fuel to be burned to maintain speed, at a max 30% efficiency, so this type of energy generation would be worse than burning the fuel in most modern power plants. The suggestion of taking energy from the road and *not* from the car by making the road *more* efficient somehow and making sure the piezo elements are taking less energy than the gains of the improved road sounds like a good approach as that would avoid removing energy from the car. My concern is how you can improve an almost ideal road like a concrete freeway and by how much? I have the feeling that you are seeking benefits from an exceedingly small amount of waste, making optimizing it very difficult and likely not cost effective, instead of focusing on low hanging fruit. But time will tell if this is indeed a solution desperately looking for a problem to solve, or that there is really merit in making piezo roads. I know that the Dutch were criticized for building a Solar (electric) bicycle road, but it turned out that the actually built thing is pretty good matching what the vision of the creators was, so sometimes you have to ignore criticism, check the Physics of what you are doing and if no fundamental flaws are found, then simply go for it. Anyone stating that the piezo road does not have "horizontal" force components, only vertical and therefor it will have no impact on the speed of the car, does not understand the Physics involved. I have tried to explain it in a simple example, I cannot comprehend it for you. Kind Regards, Cor van de Water Chief Scientist Proxim Wireless office +1 408 383 7626 Skype: cor_van_de_water XoIP +31 87 784 1130 private: cvandewater.info http://www.proxim.com This email message (including any attachments) contains confidential and proprietary information of Proxim Wireless Corporation. If you received this message in error, please delete it and notify the sender. Any unauthorized use, disclosure, distribution, or copying of any part of this message is prohibited. -----Original Message----- From: EV [mailto:[email protected]] On Behalf Of via EV Sent: Sunday, August 28, 2016 10:29 AM To: Peri Hartman; Electric Vehicle Discussion List Subject: Re: [EVDL] Piezo-power> 10mi of freeway could charge all the EVsinBurbank-CA(?) > My point is if you can capture some of that loss by adding piezos without increasing the overall loss then, and this is the important part, you must have the ability to reduce the loss somewhere else. If you can do that, then I claim you come out ahead by simply doing that and not adding piezoelectric crystals. But that is the fallacy to the opposition to this... It is simply deriving energy from the transfer of weight that naturally occurs in going from point A to point B. The only way to reduce that energy is to reduce the weight. While that might be possible, it has absolutely nothing do do with harnessing the energy. It no different that putting a hydroelectric power source in a flowing body of water. Gaining energy from a source where it was previously water. But, according to what has been posted, that's impossible since no measurable heat is generated from flowing water. The key to this is that it is harnessing the energy from the (previously wasted) energy t in the change of the vertical force vector. Some are incorrectly assuming that this HAS to somehow negatively impact the energy exchange in the horizontal force vector. The two forces are perpendicular to each other and are completely independent. Stretches in proposed approaches are incorrectly tying these together to unnecessarily make them dependent on each other. _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
