Re: [EVDL] Hanergy.com?solar vehicles may not happen ...
On 05/02/2017 12:08 PM, Lawrence Rhodes via EV wrote: You can't use standard heavy panels. You must use cells configured properly and self encapsulate using special plastic heat shrink and a hot air gun. They must be integrated into the roof of the vehicle. I've seen it done. This is much lighter and makes for a working solar vehicle. How well would that heat shrink material stand up to hail? At a minimum I'd think you would need some epoxy/fiberglass type protection over the top of the cells if you didn't have glass like the standard heavy panels. Jay ___ 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)
Re: [EVDL] Hanergy.com?solar vehicles may not happen ... (0.1% practical)
Thanks for your insights Bob but your thinking is old and your numbers are way off. It is possible to buy individual cells on Ebay for very reasonable prices. I can make a 375 watt panel for under 500 dollars for my small trike project(charges the 4kw battery in 10 or 11 hours) so charging with the solar roof is OK but having a 1.5kw solar panel on the roof of a car is under 2 thousand dollars. However you can't have a 3000 pound EV for this to work. Your EV must be weight appropriate. A four passenger vehicle has to weigh a thousand pounds and have very good aerodynamics. Not impossible but no one is manufacturing that configuration yet so the best you can do now is to make it yourself unless you want to get an Elf. Lawrence Rhodes http://sinovoltaics.com/technology/stella-lux-winner-of-world-solar-challenge-visits-shanghai/ read the specifications and be amazed. From: Robert Bruninga To: Lawrence Rhodes ; Electric Vehicle Discussion List ; ev-requ...@lists.evdl.org Sent: Tuesday, May 2, 2017 12:28 PM Subject: RE: [EVDL] Hanergy.com?solar vehicles may not happen ... (0.1% practical) For special applications. Fine. But I tell people the 200W of solar panels on my EV's roof are only 0.1% cost effective! The smaller cells cost TEN times the cost of home solar panels per watt and my home has 100 times more surface area. Hence 1000 times better to collect solar for my EV from my home's roof than on the car! Also, just 12 solar panels at home can fully charge an EV everyday forever to the annual American daily average of 40 miles a day. Talk about energy independence! And its FREE too. (after you buy the $750 worth of panels)... Bob ___ 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)
Re: [EVDL] Hanergy.com?solar vehicles may not happen ... (0.1% practical)
For special applications. Fine. But I tell people the 200W of solar panels on my EV's roof are only 0.1% cost effective! The smaller cells cost TEN times the cost of home solar panels per watt and my home has 100 times more surface area. Hence 1000 times better to collect solar for my EV from my home's roof than on the car! Also, just 12 solar panels at home can fully charge an EV everyday forever to the annual American daily average of 40 miles a day. Talk about energy independence! And its FREE too. (after you buy the $750 worth of panels)... Bob -Original Message- From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Lawrence Rhodes via EV Sent: Tuesday, May 02, 2017 12:08 PM To: ev@lists.evdl.org; ev-requ...@lists.evdl.org Subject: Re: [EVDL] Hanergy.com?solar vehicles may not happen ... You can't use standard heavy panels. You must use cells configured properly and self encapsulate using special plastic heat shrink and a hot air gun. They must be integrated into the roof of the vehicle. I've seen it done. This is much lighter and makes for a working solar vehicle. Encapsulation must be done or the cells will degrade in the natural environment. It is also more aerodynamic to use special encapsulation. A practical solar vehicle can be manufactured. It's just a matter of time before it's done. Tesla sponsors the Cruiser class at the World Solar Challenge. A future Tesla solar vehicle I bet is in the planning stages. I'd be surprised if it wasn't. Many top Tesla people were on the Stanford Solar Team. http://sinovoltaics.com/technology/stella-lux-winner-of-world-solar-challe nge-visits-shanghai/ Lawrence Rhodes ___ 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)
Re: [EVDL] Hanergy.com?solar vehicles may not happen ...
You can't use standard heavy panels. You must use cells configured properly and self encapsulate using special plastic heat shrink and a hot air gun. They must be integrated into the roof of the vehicle. I've seen it done. This is much lighter and makes for a working solar vehicle. Encapsulation must be done or the cells will degrade in the natural environment. It is also more aerodynamic to use special encapsulation. A practical solar vehicle can be manufactured. It's just a matter of time before it's done. Tesla sponsors the Cruiser class at the World Solar Challenge. A future Tesla solar vehicle I bet is in the planning stages. I'd be surprised if it wasn't. Many top Tesla people were on the Stanford Solar Team. http://sinovoltaics.com/technology/stella-lux-winner-of-world-solar-challenge-visits-shanghai/ Lawrence Rhodes ___ 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)
Re: [EVDL] Hanergy.com solar vehicles may not happen ...
A "house style" 330 watt solar panel weighs around 50 lbs, so ten of them would be 500 lbs, leaving 2500 for the rest of your vehicle. Flexible or thin film panels weigh less, but require even more surface area. If you use the solar panels "as" your roof you at least get to put that weight to use as part of your vehicle body, BUT, then your vehicle gets too hot from the sun (or if you insulate under the panels, THEY get too hot and need to be cooled by a misting system or lose efficiency). For smaller vehicles I've basically decided the weight hit of solar panels are not worth it unless the vehicle is for "occasional use" like a weekend golf cart or boat. https://www.summet.com/blog/2017/04/30/practicalities-of-on-board-solar-charging-for-small-evs/ Jay On 05/01/2017 10:57 PM, Lawrence Rhodes via EV wrote: 3kw could push a 3000 pound vehicle maybe 15 to 25 mph depending on many factors. It would charge a 30 kw battery in 10 hours. The vehicle would have to be RV size to fit the cells. Maybe 22 feet long. Lawrence Rhodes Sent from my MetroPCS 4G LTE Android device ___ 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)
