Hi Tom, Agreed on the high cost for what it delivers - I see it mostly as a gimmick.
If you look at the big picture: pedestrian is walking and the street under his foot delivers energy. That (extra!) energy must be produced by the pedestrian, so he has to exert this extra effort. I estimate that when you step on this tile, it sinks about 1/2 inch while generating power. The feeling is likely similar to walking on dry sand where your foot sinks into the sand on every step. Another way to see this is that even though the pavement might be level, you are constantly walking slightly uphill - that is how the extra energy is produced by these tiles. You could add this or an electromagnet version of it under a freeway so that every passing vehicle will be slowed down a little when passing and generates electricity for you, but I doubt that drivers will be happy that you increase their fuel consumption just so that you can generate a little electricity for your own benefit. Now, if you would turn this around and equip your own shoes with it then you are not bothering everyone else while generating power, you will just have to exert that extra energy while walking everywhere... Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: [email protected] Private: http://www.cvandewater.info Skype: cor_van_de_water XoIP: +31877841130 Tel: +1 408 383 7626 Tel: +91 (040)23117400 x203 -----Original Message----- From: EV on behalf of tomw via EV Sent: Thu 6/25/2015 8:16 AM To: [email protected] Subject: Re: [EVDL] EVLN: pavegen.com tiles charge EV from human foottraffic (v) You are putting energy into the pavement when you walk pavegen tiles or not. You apply force to the pavement when you transfer your body weight from one foot to the foot hitting the pavement. The bonds in the molecules making up the pavement supply a reaction force by stretching ever so slightly, then relaxing back as you transfer weight to the other foot. Mechanical work is done to displace the atoms and stretch the bonds. I imagine they just use some sort of piezo device to utilize about the same energy with a somewhat larger displacement, so you likely wouldn't notice the difference. Seems it would be relatively high cost/Wh. -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/Re-EVLN-pavegen-com-tiles-charge-EV-from-human-foot-traffic-v-tp4676441p4676498.html Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com. _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/ms-tnef Size: 4364 bytes Desc: not available URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150625/234cf426/attachment.bin> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
