I don't like pouring cold water on a brain storming session, but I think at some point, we have to ask: "Is it doable?"
When you are in the middle of eastern Montana, the nearest electric utility line could be miles from the combine. The cord would be a PITA to move. It is one of the reasons I switched from a corded to cordless mower. Combines running off the fermented alcohol from last year's crop might be a better option. Also, at the end of a successful combine run, the combine tanks might be dipped into to commence a celebration. This as opposed to winding up miles of extension cord. > On Feb 21, 2014, at 10:25 AM, Bruce EVangel Parmenter > <[email protected]> wrote: > > Tethered electrically driven Ag vehicles/equipment is not new. > In areas of the U.S. where rainfall is not when and where you want it, > farmers may opt to use ground water pumped into a central pivot water > system > http://en.wikipedia.org/wiki/Center_pivot_irrigation#Overview > [video > http://www.youtube.com/watch?v=pTluHs-PCT0 > Center Pivot irrigation > TRAXCO· oct 1, 2010 > http://www.traxco.com - Center pivot systems were born to save human > labor, evolved so fast, adjusting to the expansion of human knowledge. > Nowadays, center Pivots are accepted as a method of water application > that promotes efficient water use. Some others describe them as machines > that could make it rain anytime we needed it to. The sprinkling sound of > a center pivot system is the rhythm of many farms around the world. > ] > > Using Google maps in satellite mode, see > http://goo.gl/maps/hhweN > The circles are using a central pivot irrigation system. In that > example, it is an arid region, but there is ample water flowing down the > nearby Colorado River to tap into. > > ... > On David comment on grid powered mining EVs, see (half-way down the > page) > http://insideevs.com/electric-vehicles-go-underground-way-underground/ > ... Svedlung: The loaders are hundred percent electric and they’re > powered by cable directly off the grid. The working area of mining > loaders is usually quite confined, so it can run [off] a cable ... > > > {brucedp.150m.com} > > > > - >> On Fri, Feb 21, 2014, at 01:49 AM, Martin WINLOW 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. > - > > -- > http://www.fastmail.fm - Faster than the air-speed velocity of an > unladen european swallow > > _______________________________________________ > 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)
