Re: [EVDL] Solar trailer calculation

Ok. Seems the practical and useable tear drop RV with 2000 watts weighing a few hundred pounds would allow a trip of a hundred miles and charging in two days of sun. This would be individual cells with the roof totally encapsulated to protect the cells. Thanks for the input. There must be a

Re: [EVDL] Solar trailer calculation

On 31 Dec 2017 at 13:45, Lee Hart via EV wrote: > What will the future hold in 100 years? ... I am afraid it will look a lot > like > it did 100 years ago, but overlaid with many superficial technological > changes. You paint a fairly pessimistic view. Cynic that I am, I don't much

Re: [EVDL] Solar trailer calculation

Sean Korb via EV wrote: You can see this coming to fruition in 11 or 12 decades... "It is difficult to make predictions, especially about the future." -- (a Yogi Berra-ism) New Years is a time for reflection, and considerations about the future. Personally, I think the future will be just

Re: [EVDL] Solar trailer calculation

Solar Freaking Roadways! https://youtu.be/qlTA3rnpgzU From: Haudy Kazemi via EV <ev@lists.evdl.org> To: Electric Vehicle Discussion List <ev@lists.evdl.org> Cc: Haudy Kazemi <kaze0...@umn.edu> Sent: Saturday, December 30, 2017 11:54 AM Subject: Re: [EVDL] Solar t

Re: [EVDL] Solar trailer calculation

-- Forwarded message -- From: Lawrence Rhodes Date: Dec 31, 2017 1:27 AM Subject: Re: EV Digest, Vol 62, Issue 39 To: ev@lists.evdl.org Cc: > This wind / solar hybrid is real. However it helps to be on flats and hope > you don't hit a dust devil. >

Re: [EVDL] Solar trailer calculation

You can see this coming to fruition in 11 or 12 decades. With adoption of self driving cars, the need for safety features will wane. Then we can build cars with the driver laying supine or prone depending on preference with every car being a fairly uniform 150 foot long 8 foot wide ground craft.

Re: [EVDL] Solar trailer calculation

EVDL Administrator via EV wrote: I take it youi're talking about the Sunrise? I was thinking of the Force. Yes, the Sunrise. The one I saw certainly looked like a Geo Metro transaxle. But I don't know what was inside it. Since they were pretty much hand built to order, it's also possible

Re: [EVDL] Solar trailer calculation

Saturday, December 30, 2017 8:05 AM > To: Rush Dougherty via EV > Cc: clarke2 > Subject: Re: [EVDL] Solar trailer calculation > > I don't think I would want a large flat plate trailer that was not heavy enough to stay grounded > in gusty winds. > > Dan > > Dan

Re: [EVDL] Solar trailer calculation

You do not want to know what (passenger)trains are dumping on the tracks... -Original Message- From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Lee Hart via EV Sent: Saturday, December 30, 2017 11:20 AM To: Electric Vehicle Discussion List Cc: Lee Hart Subject: Re: [EVDL] Solar

Re: [EVDL] Solar trailer calculation

Lee Hart via EV wrote: That's an interesting idea. What if the railroads installed PV panels between the rails? That way, they never get driven on. The power they produce can be fed to the rails to power the train. It would not be difficult to have a "cleaner car" to clear the PV panels of

Re: [EVDL] Solar trailer calculation

Haudy Kazemi via EV wrote: How about we put solar cells on the road surface and either conductively or inductively transfer the energy to the car? :) No wind problems this way. No large trailers needed either. It would have localized shading by snow and rush hour, though, amongst other

Re: [EVDL] Solar trailer calculation

trailer that >will weight >> 10lbs to hold your 2kw array. >> >> Rush Dougherty >> Tucson AZ 85719 >> >> >>> -Original Message- >>> From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Lawrence >Rhodes via >> EV >>

Re: [EVDL] Solar trailer calculation

Of Lawrence Rhodes via EV Sent: Friday, December 29, 2017 9:59 AM To: ev@lists.evdl.org Cc: Lawrence Rhodes Subject: Re: [EVDL] Solar trailer calculation If you scaled down and accepted kevel one charging you could use 550 5 inch cells. 2000 watts. Have a 8 x 12 foot tear drop trailer

Re: [EVDL] Solar trailer (a 1000-to-1 waste)

in case, or not, please remember the guy who drove the "Solar Taxi" 40,000+ km around the world. a small 2 seater EV, towing about a 30ft+ (~9-10m) trailor with PV panels and a single heated battery. On Friday, December 29, 2017, 10:42:02 PM EST, Mark Abramowitz via EV

Re: [EVDL] Solar trailer calculation

Okay, so with 12.2 kW at 55 mph, he ONLY needs about 600 square meters of PV area to recharge on the run. Still impractically big, nicht wahr? Marc de Piolenc On 12/29/2017 2:44 PM, ev-requ...@lists.evdl.org wrote: Marc, Iam afraid you are not making the Leaf specification situation better.

Re: [EVDL] Solar trailer

e) > > > -- > > Message: 1 > Date: Fri, 29 Dec 2017 01:43:35 -0600 > From: Haudy Kazemi <kaze0...@umn.edu> > To: Electric Vehicle Discussion List <ev@lists.evdl.org>, ROBERT via > EV <ev@l

Re: [EVDL] Solar trailer calculation

On 29 Dec 2017 at 10:02, Lee Hart via EV wrote: > Not quite; he kept the Geo transaxle, but "gutted" it so all it had was 2nd > gear. It then ran lighter weight oil (not the usual 90w gear lube). I take it youi're talking about the Sunrise? I was thinking of the Force. I'd be surprised if

Re: [EVDL] Solar trailer calculation

On 29 Dec 2017 at 15:37, Lawrence Rhodes via EV wrote: > With more efficient panels that length is reduced to 60 ish feet. Good luck buying those hyper-efficient PV panels without breaking into Fort Knox! If you can afford that kind of money, though, why not book a flight on Musk's SpaceX?

Re: [EVDL] Solar trailer (a 1000-to-1 waste)

SO much negativity on this list towards someone that just asked a simple question, and acknowledged the challenges and issues up front. Personally, I applaud the initiative and willingness to tilt at technological, economic, and other assorted windmills. As my Tai Kwon Do instructor used to

Re: [EVDL] Solar trailer calculation

Rush Dougherty via EV wrote: If you're maximizing your 'efficiency' then why use plywood? Nobody that is trying to increase strength and lower weight using plywood anymore, they use Carbon Fiber. So spend a few extra $k and invest in a trailer that will weight 10lbs to hold your 2kw array.

Re: [EVDL] Solar trailer (a 1000-to-1 waste)

Small lightly loaded trailers with little wind resistance can add 50-80 Wh/mile. Taller/heavier trailers can double vehicle energy consumption. On December 29, 2017 2:20:20 PM CST, Bill Dube via EV wrote: >I agree 100%. >Folks forget that it takes significant energy to tow

Re: [EVDL] Solar trailer calculation

> -Original Message- > From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Lawrence Rhodes via EV > Sent: Friday, December 29, 2017 9:59 AM > To: ev@lists.evdl.org > Cc: Lawrence Rhodes > Subject: Re: [EVDL] Solar trailer calculation > > If you scaled down and acc

Re: [EVDL] Solar trailer (a 1000-to-1 waste)

I agree 100%. Folks forget that it takes significant energy to tow even a small trailer. Much more than one would think. Probably more energy than the panels produce, especially at highway speeds. Best to leave them on the roof of your house, or put them on a "solar shed" for your car to

Re: [EVDL] Solar trailer calculation

Lawrence Rhodes via EV wrote: If you scaled down and accepted kevel one charging you could use 550 5 inch cells. 2000 watts. Have a 8 x 12 foot tear drop trailer. It might push you 15 mph on level ground or charge you in 21 hours. Many variations for shape, power and speed. I would have

Re: [EVDL] Solar trailer calculation

If you scaled down and accepted kevel one charging you could use 550 5 inch cells. 2000 watts. Have a 8 x 12 foot tear drop trailer. It might push you 15 mph on level ground or charge you in 21 hours. Many variations for shape, power and speed. I would have eyelets on each corner to tie it

Re: [EVDL] Solar trailer

Yes the units cancel. I brought the units along anyway to make the parallel to my base numbers more obvious. Also, gen 1 Leaf curb weight is around 3300 lbs; in comparison a gen 3 Prius is about 3050 lbs and a Model S is about 4500-4900 lbs depending on pack capacity. On December 29, 2017

Re: [EVDL] Solar trailer calculation

t; > Sent: Wednesday, December 27, 2017 3:10 PM > Subject: Re: [EVDL] Solar trailer calculation > > The consumption rate is 12.2 kWh plus losses. > So a 15kW panel should do it? (Is this right? ) > Some quick googling suggests 100-110 square meters. 1100 sq ft or so. 8' > wide

Re: [EVDL] Solar trailer calculation

EVDL Administrator via EV wrote: [Sunrise efficiency] Also a light, efficient transaxle. Even the Geo Metro factory transaxle was too high in friction for his taste, so Worden chucked it and built something better. Not quite; he kept the Geo transaxle, but "gutted" it so all it had was 2nd

Re: [EVDL] Solar trailer calculation

10 PM Subject: Re: [EVDL] Solar trailer calculation The consumption rate is 12.2 kWh plus losses.  So a 15kW panel should do it? (Is this right? ) Some quick googling suggests 100-110 square meters. 1100 sq ft or so.  8' wide and 130' long.  YMMV Brett  On Dec 27, 2017 3:48 PM, "Lawr

Re: [EVDL] Solar trailer (a 1000-to-1 waste)

> > Personally, I think a mobile array for a vehicle is a fools errand, or > maybe a pass-time for the independently wealthy. Its sure is. I have solar panels all over the roof of my two priuses. I tell people that it makes 0.1% economic sense to do it. The smaller panels that fit the roof of

Re: [EVDL] Solar trailer calculation

On 28 Dec 2017 at 18:31, Lee Hart via EV wrote: > Lots of "something elses". Good aerodynamics. Low frontal area. Flush > windows. An absolutely smooth flat bottom. No front grille. High > pressure, low rolling resistance tires (small by modern standards). > Brakes that don't drag. A motor and

Re: [EVDL] Solar trailer

On 29 Dec 2017 at 5:31, someone wrote: > At 55 MPH it does not require all the power in the > battery (30KW-Hr). It only requires 7.5KW-Hr - 8.9 KW-Hr to maintain 55 MPH. You're joking here, yes? I'm sure you know that power isn't measured in kWh. I'm not so sure that we should joke about

Re: [EVDL] Solar trailer

On 29 Dec 2017 at 1:43, Haudy Kazemi via EV wrote: > 13.75 kWh/55 miles at 55 mph) That might be accurate, but to me it seems like a convoluted way to state the power required. The miles and the hours cancel out, making it 13.75 kW. My own admittedly limited experience is that a ~2500lb

Re: [EVDL] Solar trailer

s.evdl.org> >Sent: Thursday, December 28, 2017 9:39 PM >To: ev@lists.evdl.org >Cc: Marc de Piolenc >Subject: Re: [EVDL] Solar trailer > >You're getting power and energy mixed up. >Your Leaf has a POWER rating of 30 kW, which means that (at full power) >it consumes 30 kW-hours o

Re: [EVDL] Solar trailer calculation

85719 > -Original Message- > From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Lawrence Rhodes via > EV > Sent: Thursday, December 28, 2017 3:39 PM > To: ev@lists.evdl.org > Cc: Lawrence Rhodes > Subject: Re: [EVDL] Solar trailer calculation > > A 10 by 62

Re: [EVDL] Solar trailer

Nice summary. The item "receiving 100 watts per square meter" is tricky. On a clear day with the sun over head you may see 1300W/m^2. But more usual is 1100 or 1000. Could be 200W/m^2 with clouds or heavy weather. And the sun, unfortunately does not stay directly in front of a mobile array no

Re: [EVDL] Solar trailer

org> on behalf of Marc de Piolenc via EV <ev@lists.evdl.org> Sent: Thursday, December 28, 2017 9:39 PM To: ev@lists.evdl.org Cc: Marc de Piolenc Subject: Re: [EVDL] Solar trailer You're getting power and energy mixed up. Your Leaf has a POWER rating of 30 kW, which means that (at full power) it

Re: [EVDL] Solar trailer

: Thursday, December 28, 2017 8:40 PM To: ev@lists.evdl.org Cc: Marc de Piolenc Subject: Re: [EVDL] Solar trailer You're getting power and energy mixed up. Your Leaf has a POWER rating of 30 kW, which means that (at full power) it consumes 30 kW-hours of energy per hour. It does not get 4.5 miles per

Re: [EVDL] Solar trailer

You're getting power and energy mixed up. Your Leaf has a POWER rating of 30 kW, which means that (at full power) it consumes 30 kW-hours of energy per hour. It does not get 4.5 miles per kW because a kilowatt is a unit of power, not energy - maybe 4.5 miles per kWh which is roughly consonant

Re: [EVDL] Solar trailer calculation

paul dove via EV wrote: The batteries are part of the car since it won't go without them.. so 2300 lbs? That's pretty light but not enough to go 217 miles on a charge. 26KWh / 217 = 120Wh/m They had to have done something else. Lots of "something elses". Good aerodynamics. Low frontal

Re: [EVDL] Solar trailer calculation

ussion List <ev@lists.evdl.org> Cc: Lee Hart <leeah...@earthlink.net> Sent: Thursday, December 28, 2017 3:25 PM Subject: Re: [EVDL] Solar trailer calculation paul dove wrote: >  From what I read it weighed over 3000 lbs. That is not light weight. The GVWR was about 3000 lbs, but

Re: [EVDL] Solar trailer calculation

A 10 by 62 foot array would be 12,000 watts at 22.5% efficiency.  Smaller as the efficiency goes up.  Cost would be based on cell cost.  3,500 cells at lets say 2 to 4 dollars each.7 thousand to 14 thousand for the cells. You could cut down length a bit if some were supported by the vehicle. 

Re: [EVDL] Solar trailer calculation

. Sorry. From: David Nelson <gizm...@gmail.com> Sent: Thursday, December 28, 2017 11:19 AM To: Electric Vehicle Discussion List Cc: ROBERT Subject: Re: [EVDL] Solar trailer calculation On Wed, Dec 27, 2017 at 9:05 PM, ROBERT via EV <ev@lists.evdl.org>

Re: [EVDL] Solar trailer calculation

paul dove wrote: From what I read it weighed over 3000 lbs. That is not light weight. The GVWR was about 3000 lbs, but that includes the car itself, batteries, and a full load of passengers and luggage. The cars themselves varied from 1400 to 1600 lbs, depending on how much "fluff" was

Re: [EVDL] Solar trailer calculation

A solar trailer with a conventional EV is not well suited to sustained highway speed transport. It can however be useful for range extension (if you can charge while driving or use the trailer as a pusher) or for slow charging while camping at non-electric camp sites. Getting 1 kW on a trailer

Re: [EVDL] Solar trailer calculation

From what I read it weighed over 3000 lbs. That is not light weight. My celica weighed 2900 lbs after I converted it. It did have a 26kwh battery so that’s 30% more than mine. They must have done something else to get the efficiency to go 200 miles on a charge. Sent from my iPhone > On Dec

Re: [EVDL] Solar trailer calculation

On 28 Dec 2017 at 5:05, ROBERT via EV wrote: > I do not know who does your math. The email states "Leaf gets 4.5 miles per > kw at 55mph more or less depending on wind." Therefore, 1000 W / 4.5 miles = > 222 W per mile. This appears to be a little low to me. However, if it is > accurate, you

Re: [EVDL] Solar trailer calculation

On Wed, Dec 27, 2017 at 9:05 PM, ROBERT via EV wrote: > I do not know who does your math. The email states "Leaf gets 4.5 miles per > kw at 55mph more or less depending on wind." Therefore, 1000 W / 4.5 miles = > 222 W per mile. This appears to be a little low to me.

Re: [EVDL] Solar trailer calculation

Alan Arrison via EV wrote: I'll tell you, like many others have, again... it can't be done. Lawrence (and fellow EVers), It's not that it can't be done. It just can't be done with the same old thinking that led to our present way of building cars. Modern cars are massively heavy and

Re: [EVDL] Solar trailer calculation

v-boun...@lists.evdl.org> on behalf of Jay Summet via EV < > ev@lists.evdl.org> > Sent: Wednesday, December 27, 2017 4:18 PM > To: Lawrence Rhodes; Electric Vehicle Discussion List; Lawrence Rhodes via > EV; ev@lists.evdl.org > Cc: Jay Summet > Subject: Re: [EVDL] Solar trailer

Re: [EVDL] Solar trailer calculation

o one mile. From: EV <ev-boun...@lists.evdl.org> on behalf of Jay Summet via EV <ev@lists.evdl.org> Sent: Wednesday, December 27, 2017 4:18 PM To: Lawrence Rhodes; Electric Vehicle Discussion List; Lawrence Rhodes via EV; ev@lists.evdl.org Cc: Jay Summet Subject: Re

Re: [EVDL] Solar trailer calculation

55 mph / 4.5 miles per kwh = 12.22 kwh per hour or 30/12.22 = 2.45 hours of driving time at 55mph with 30 kwh, or 2.45x55=135 mile range at 55mph. So, to drive continuously at 55mph you would need a minimum input of 12,220 watts. Jay On December 27, 2017 5:47:54 PM EST, Lawrence Rhodes via

Re: [EVDL] Solar trailer calculation

; EV > Sent: Wednesday, December 27, 2017 3:48 PM > To: ev@lists.evdl.org > Cc: Lawrence Rhodes > Subject: [EVDL] Solar trailer calculation > > Hi all, > My math is good enough to figure out I get about my 30kw Leaf gets 4.5 miles > per > kw at > 55mph more or less de

Re: [EVDL] Solar trailer calculation

If you really want a directly solar powered vehicle, you will want to look at the low profile lightweight solar racers that many university teams put together. These tend to use bicycle-like components. Making it work for a conventional vehicle for sustained highway speeds runs into space,

Re: [EVDL] Solar trailer calculation

I'll tell you, like many others have, again... it can't be done. On 12/27/2017 5:47 PM, Lawrence Rhodes via EV wrote: Hi all, My math is good enough to figure out I get about my 30kw Leaf gets 4.5 miles per kw at 55mph more or less depending on wind.  What I'd like to know is what size

Re: [EVDL] Solar trailer calculation

@lists.evdl.org Cc: Lawrence Rhodes Subject: [EVDL] Solar trailer calculation Hi all, My math is good enough to figure out I get about my 30kw Leaf gets 4.5 miles per kw at 55mph more or less depending on wind.  What I'd like to know is what size solar panel would be needed to support that speed.  Now don't

Re: [EVDL] Solar trailer calculation

The consumption rate is 12.2 kWh plus losses. So a 15kW panel should do it? (Is this right? ) Some quick googling suggests 100-110 square meters. 1100 sq ft or so. 8' wide and 130' long. YMMV Brett On Dec 27, 2017 3:48 PM, "Lawrence Rhodes via EV" wrote: > Hi all, > My

[EVDL] Solar trailer calculation

Hi all, My math is good enough to figure out I get about my 30kw Leaf gets 4.5 miles per kw at 55mph more or less depending on wind.  What I'd like to know is what size solar panel would be needed to support that speed.  Now don't tell me it can't be done.  I just want to know the formula for