by Newfie » Wed 14 Jan 2015, 23:18:51
$this->bbcode_second_pass_quote('pstarr', '')$this->bbcode_second_pass_quote('Newfie', 'W')hat problem are electric trains supposed to solve?
I believe it is called
peak oil? Does that ring a bell? Dingaling.
Railroad transport is 100x as energy efficient as car/truck. Electric rail can easily use solar/wind power, and doesn't require radical new battery technologies like EV. Electric trains lines don't require additional wire transmission and massive road infrastructure like EV's, just a track and catenary.
Rail is the transport choice in much of the world where oil is not produced, where folks can't afford single-occupancy transportation. (we are not India and will never rely on bikes/motorbikes) The US is not immune to peak oil and had better make wise decisions now while we have an abundance of oil. Post-peak deflation, fuel rationing, and unemployment will force people out of the distant suburbs into towns/cities with higher-population density. That is where rail makes sense like Europe and the rest of the civilized world.
$this->bbcode_second_pass_quote('Pops', 'W')e're going to switch everything over to PV, it'll be great.
Just sell that nasty old Bakken stock and buy some green PV stock, it is growing eeeeexponentiallyyyyy
really.
Pops, you know I am the last cornucopean. I see windmills in my mind.
![5propeller [smilie=5propeller.gif]](https://udev.peakoil.com/forums/images/smilies/5propeller.gif)
Sounds more like the problem you are trying to solve is how to keep the current gig going.
The problem you are trying to avoid is that the current gig is up!
I've spent the last 38 years working on and around electrified train systems of one variety or another, though not usually on the electrification itself. Two years ago I turned in my Amtrak frequent flyer miles, 40,000 of 'em. I've climbed catenary poles and ridden the head end of a GG1, so I have a passing familiarity. While I know folks who are enamored of them, and I have been smitten in the past, I'm no longer one.
They are, at best, an incremental improvement over diesel locomotion. They are a wee step in the right direction.
The problem I have with this bleary eyed adoration is that it is just a sort of greenwashing. By conviencing yourself that our problems are as simple as moving from diesel to electric locomotion is hiding the bigger fact that if you could move all this crap for free, with no energy at all, we would still be in overshoot and still depleting the worlds resources and polluting the atmosphere at suicidal rates.
Diesel locomotion is already very efficient over highway locomotion. There is not a lot to be gained in switching to electric. The big gain comes by not shipping all this crap in the first place, which includes moving crude from the Bakken to Delaware.
To think otherwise is to delude yourself.
Excuse my poor and crude analogy please, but you are popping pimple on a terminal cancer patient. It may be working in the right direction but it's not gonna change the outcome even marginally.
by toolpush » Thu 15 Jan 2015, 07:15:43
$this->bbcode_second_pass_quote('Subjectivist', '')$this->bbcode_second_pass_quote('toolpush', 'S')ub,
http://en.wikipedia.org/wiki/Electro-diesel_locomotive Duel mode locomotives can be done, as you will see on the link. You will also notice they are usually for nitch markets and light duty.
Interesting that that you suggest using the diesel in tunnels,as this is usually where the duel mode is used in electric mode.
Not sure it would be so easy as rebuilding a new old loco, and installing a transformer and extra circuitry that would be required. Building from new would be more likely scenario. There is not much spare room in a loco these days and high voltage takes space.
If the diesel needs to be running for every overhead bridge or tunnel that the train passes under or through, then depending on the geography, the diesel could be spending all of its time on idle, with many short bursts of power and therefore cutting into any possible fuel savings.
Tool push, if you have YouTube and an hour to spare whatch this,
http://youtu.be/bLp0mrMBRFoI find it amazing what they did in this rebuild shop.
Thanks Sub,
I finally got around to watching. There is a lot of familiar equipment there. The EMD V16 engine, are very similar to what we are running on the rig I am currently on. Though ours have been upgraded with turbos and are hooked up to 2,250kw generators. We have three of which two normally gives us enough power for drilling.
An amazing thing about these old EMDs, is the fact they burn so much oil during operation, they don't actually require oil changes, due to the fact of the top ups are greater than crankcase volume. Also If there are any problems with a cylinder, then you can change out the complete "power pack", Cylinder, piston and rod plus the top end in a few hours, and the rest of the engine stays intact. They are bullet proof engines, but gobble fuel,and are not real eco friendly.
I was disappointed they didn't mention the anything about the drive motors apart from the fact they existed. At 1700 hp and built in the 1950, I would presume 2x GE 752 DC traction motors. These motors put out about 800hp each.
They didn't mention any details of the new gensets that were being installed, but they must still be governed by the fact there are still only 2x 800hp drive motors, so this loco has improved fuel and pollution, but not upgraded in anyway power wise, and still using DC, rather than AC.
As for your comment about duel fuel, electric/diesel. You will notice there was very little wasted or spare space in the loco. Any HV equipment will take a fair bunch of room, just for insulation reasons.
Big toys for big boys?