Slitely off topic but there was comment about star trek food replicators So, 3D printers are working on this now. There are stories of big CHON burger, carbon hydrogen oxygen nitrogen and SCOP ?food? (Single cell organic protein) (algae) last 2 are yuck. 3D printed may be ok
-------- Original message -------- From: Martin WINLOW <[email protected]> Date:02/22/2014 6:27 AM (GMT-05:00) To: Electric Vehicle Discussion List <[email protected]> Subject: Re: [EVDL] Getting Around Energy Density by Tethering - EVs For Agriculture It might make sense to use fuel when fuel prices are still relatively low, but what are we going to use when fuel prices are 5 or 10 times what they are now? Assuming I live to be the same age my parents are now (90+), I will be very surprised if fuel is not as expensive as this by then - say around 2050. Perhaps we will have come up with something else by then - massive indoor hydroponics factories on hundreds of levels, all computer controlled for nutrients, light and warmth, and harvested automatically, too. Or perhaps Star Trek will rescue us with 'universal replicators' - just add energy and elements ('this hopper has carbon in it, this one potassium, this one nitrogen...' etc) and just ask it for what ever you want! Quite what we'll do with all the farms (and farmers) is another matter. Wall-e - here we come! MW On 21 Feb 2014, at 18:21, Peter Gabrielsson wrote: > Out of curiosity I looked up the diesel fuel consumption of Combines. It > ranges from 1-1.6 gallons per acre. Which roughly would translate to 12-20 > kWh of electricity per acre. So for a 100 Acre field you'd need 15 to 25 > tesla battery packs. Yikes. > > On the other hand you'd need a 1200 ft long cord for a 100Acre round field > presuming the center pivot is used. > > I bet those combines are already very efficient, running at a constant load > most of the time. There are some applications where using liquid dino fuels > just makes a ton of sense, large scale farming is probably one of them. > > > > > > > > On Fri, Feb 21, 2014 at 1:49 AM, Martin WINLOW <[email protected]> wrote: > >> Dear List, >> >> I was having a chat recently at work (which is nothing whatsoever to do >> with EVs!) about how vehicles that traditionally use lots of energy would >> ever be able to switch to electric power due to limitations on energy >> density. Fuel cell tractors came up amongst other things and then one of >> my colleagues who, on learning of the enormous amounts of power required by >> combine harvesters and plough-pulling tractors, jokingly suggested using 'a >> very long extension lead'. Whilst he is an ill-informed bumpkin, the >> thought did occur that in an agricultural context powering machines >> directly from the grid might not be so daft. I immediately thought of >> those enormous irrigation contraptions that work their way up and down huge >> fields, laying and unlaying the hose that supplies the irrigation water as >> it goes. Could not the same technique be applied to tractors etc? Each >> field would have a connection point with power brought in either above or >> below ground in the 'usual' way. >> >> An alternative idea would be to have mobile battery swap facilities >> connected to the grid in each field and be moved from field to field as the >> work progressed. >> >> Just a thought! >> >> MW >> _______________________________________________ >> 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) >> >> > > > -- > www.electric-lemon.com > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140221/b05e4218/attachment.htm> > _______________________________________________ > 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) > _______________________________________________ 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 -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140222/4eaebbb7/attachment.htm> _______________________________________________ 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)
