Pete_Cavan wrote: » I'm not ignorant of the extent of work undertaken to have the line reopened but building a new line from scratch requires far more work. A new line across a virgin landscape would require major earthworks to provide a stable and sufficiently level base on which to build the railway. Anywhere you go to build it would require extensive cut and/or fill to give a suitable vertical alignment and even favourable ground conditions would require significant works to give sufficient bearing capacity, nevermind soft and/or wet ground. Building a new line from scratch would cost multiples of what reopening Athenry - Ennis cost, to believe otherwise is being ignorant of the extent of works required.
Losty Dublin wrote: » It does require some more work but not much more work, on site in any case. If anything a lot of work undertaken by Irish Rail to ready the WRC or Middleton would have been fairly similar to a new line. M3 Parkway would be one such example of a new route. Although it largely follows the route of a former line it was working from the base up and it followed much of the same work patterns on site.
IE 222 wrote: » I think this is the answer to our intercity network but not high frequency services such as Dart. The current technology wouldn't be too far off what we require now. It should also be possible to convert current fleet to hydro power saving on the need to purchase a new fleet.
AMKC wrote: » This is what Irish Rail should be doing.https://www.cnbc.com/2020/09/14/in-austria-a-hydrogen-train-is-set-to-travel-on-challenging-routes-.html Would it be cheaper to just buy one of these trains instead of trying to electrify lines that are not electrified? Maybe we could have the H.R.C.T.S or Hydrogen rapid country transport System.
loyatemu wrote: » Looking at the promotional video for the iLint I doubt our existing stock could be retrofitted. There's a lot of proprietary tech in there -fuel cells, hydrogen storage, LiOn batteries, energy recovery. Looks like a pretty good system though, I wonder how the price compares to diesel.
tabbey wrote: » This is a trial. Hydrogen technology is merely another form of storing energy, it is produced using electric power. Up to now, battery technology is usually considered more efficient. In years or decades to come, hydrogen may indeed be useful, but for now it's irrelevant.
bk wrote: » I'm somewhat dubious about Hyrdrogen technology. Obviously it does work, but the issue is cost and it's environmental impact. People always talk about Hydrogen being produced using excess wind and solar power, but in reality 95% of the worlds Hydrogen is produced using natural gas steam reformation or coal/oil gasification. This sort of production unfortunately releases large amounts of greenhouse gases. It is slightly better then Diesel, but far from zero emissions and typically much worse then overhead power or EV. It is also about 3 times more expensive then Diesel and that is for the "cheap" gas reforming approach, using Wind and electrolysis greatly increases the cost. It also comes with difficult and expensive handling, transport, safety and storage costs. I don't think you would be able to store hydrogen in any of the city or town centre stations, rural locations only. I wouldn't underestimate the difficulties and downsides of this technology. I don't think it has any place in cars, vans, city buses, etc. It might have a place in heavier vehicles, intercity trains, coaches, trucks, etc. but only if the battery tech doesn't develop fast enough and overtake it. And for intercity trains you would definitely want to be doing a careful cost benefit analysis of the cost of overhead cables versus the much higher fuel and handling costs of Hydrogen over a decently long period. A hybrid approach of trains with batteries + partial electrification for topup of the batteries along the way is also an approach worth considering. I'm not dismissing hydrogen tech at all, but just FYI it is much more complicated then the glossy brochures suggest.
L1011 wrote: » Energia have an electrolysis plant to use excess wind energy overnight don't they?
dowlingm wrote: » So they dohttps://www.energia.ie/blog/future-of-energy They admit themselves it’s small scale but marrying it to a wind plant makes some sense. The thing about producing for a large scale system with 7x52 demand is that you have to be able to either have steady production or a lot of storage to cover lulls or you end up buying market rate power (or reformed H2 from a chemical vendor) to cover your contract, no? Translink could sit three buses out at weekends and the like. Harder when it’s 33, or 133.
IE 222 wrote: » That's why it's been trialled first. Lets see how it all works out before denouncing it. They obviously have belief in its possibilities and success otherwise it ain't worth the investment.
Jamie2k9 wrote: » NTA to carry out a feasiblity study to upgrade Galway-Athenry to double track. Study scheduled to commence in November and be complete by Q2 2021.https://www.kildarestreet.com/debates/?id=2020-09-23a.271
Geuze wrote: » Do they need permission from central/local Govt, and NTA?
bk wrote: » BTW The NTA will also be trialling 3 Hydrogen Fuel Cell Double Decker buses with BE:https://www.dublininquirer.com/2020/06/17/hydrogen-buses-set-to-be-trialled-in-dublin-early-next-year-says-nta But this already shows some of the challenges. Each bus to cost 800k, versus 350k for Diesel and 450k for plugin hybrid. In another report I read it costs about 1 million euro of the fuel pumping station for each depot. And hydrogen fuel cost roughly 3 times Diesel. So it isn't so much that it doesn't work, but that currently at least, it massively increases costs all round. Of course well worth trialling and hopefully in time the costs would come down. But it also shows why people haven't rushed to it yet. Sorry I know this is the rail forum, but all the same cost challenges would be there for hydrail too.
GerardKeating wrote: » They would need a railway order (railway equilivant of planning permission). There are a few bridges on the line which might need work, it's not as simple as clearing a few weeds away and laying down a few rails. Origionally the Athlone/Ballinasloe section was double track, and later singled. And the Galway-Athenry section was also double, and later singled, but the bit inbetween was always single track. Also a road bridge was built over the track, just after Oranmore, not sure if the left room for two tracks.
IE 222 wrote: » I wouldn't be worried about costs right now. These things are all about economies of scale. It will likely cost the same to produce, transport and store small batches as it would large batches. If interest and demand grows manufacturers will increase production lines and productivity accordingly which will slash the costs. Same with the fuel itself. It's a very small and limited industry currently and I think it's a bit premature to compare the costs of both at this stage.
Jamie2k9 wrote: » Looking at Google maps would say the N67 bridge should just about accomidate doubling but they were not generous with space. When was it buit do you know? The big issues will be closing crossings, I cannot see any non CCTV controlled staying if its doubled. Ideally all would go but might not be possible. The speed limits on the section are terrible now, should be 80mph minimun but the aim should be 100mph.
bk wrote: » The issue you have, prices will only drop if it scales up, but it will only scale up if the demand is there. And increasingly it is looking like widespread, large scale demand for Hydrogen simply isn't going to develop. Cars, vans, city buses, etc. all look to be going battery, not hydrogen. Even heavier vehicles like intercity coaches * and trucks look borderline to be going battery too. * South Korea already has a very nice looking, double decker intercity battery EV coach! It looks like batteries are getting the scale, not hydrogen. If all those go battery, they were does the scale for hydrogen come from? You aren't going to get the scale if you are producing hydrogen just for a small number of trains and a few other odds and ends. This is why the Japanese government had been pushing Toyota so hard to go Hydrogen over battery. They knew they needed the scale that comes with cars. But it looks to have failed and even Toyota are getting ready to go battery now too. I will say however, there is one possibility for scale. In the UK, they are thinking about converting the natural gas network for home heating to Hydrogen! That would give you scale in terms of hydrogen production obviously. But a word of warning, this idea in the UK is highly controversial with lots of major question marks, massive disruption and cost. And we don't seem to be going down that route here in Ireland. So I'd be cautious on relying on this. Oh Airbus seem to be thinking of going Hydrogen too for aircraft, it that happens, it would help trains too. Again, not saying it can't be Hydrogen, just that it is complicated.
IE 222 wrote: » I completely understand but I think your delving too deeply into this idea. It's not about where it is now but where it will be in 10-15 years time. Hydrogen rail has realistically only come to fruition in the last 5 years. Trials are only beginning and if early trials show positives more advanced trials will be experimented. It'll be at least another 5-10 years before anyone really knows its full potential which lines up perfectly with our next fleet and network renewal time scale.
bk wrote: » Oh absolutely. All just interesting speculation on my part. I've been following the development of battery and hydrogen tech closely over the last few years. I'd assume that Battery trains will also be a strong contender too. With the news of Bombardier competing for the Dart+ project, their TALENT 3 regional train with batteries could be an interesting future option too. It currently has 100km range, but 15 years from now, given the rate of improvement in battery capacity, you'd be looking at 210 to 270km range. Plus the ability to topup from overhead cables. Could be quiet an attractive option for the commuter lines into the other cities. Of course all far off in the future. Will be more interesting to see what they decide to go for for Dart+ in the short term.
