The Anonymous Widower

HS2 Way Out In Front In Tunnel Design For High-Speed Rail

The title of this post is the same as that of this article on Rail Engineer.

The article describes how Arup and Birmingham University are using physical and computer modelling to obtain the ultimate profiles of both tunnel portal and train nose to both increase train performance and reduce train noise as the trains enter tunnels.

They are even using a huge shed at the former British Rail Research Centre in Derby!

The biggest problem, is that there are aerodynamic effects, as the trains enter the tunnels at very high speeds, which result in what are inevitably called sonic booms, that disturb the local residents.

Because the new trains and tunnel portals are being developed together, there must be a greater chance, they will meet the objectives.

Collateral Benefits

Get the design right and there will be other benefits.

Lower Power In The Cruise

In How Much Power Is Needed To Run A Train At 125 mph?, I said this.

I have found this on this page on the RailUKForums web site.

A 130m Electric IEP Unit on a journey from Kings Cross to Newcastle under the conditions defined in Annex B shall consume no more than 4600kWh.

This is a Class 801 train.

  • It has five cars.
  • Kings Cross to Newcastle is 268.6 miles.
  • Most of this journey will be at 125 mph.
  • The trains have regenerative braking.
  • I don’t know how many stops are included

This gives a usage figure of 3.42 kWh per vehicle mile.

This figure is not exceptional and I suspect that good design of the train’s nose will reduce it, especially as the design speed of High Speed Two will be 360 kph or 224 mph.

Reduced Noise

Stand on a Crossrail platform at say Southall or West Drayton stations and listen to the Class 801 trains passing.

They are only doing about 100 mph and they are certainly not quiet! Noise comes from a variety of sources including aerodynamics, overhead wires and running gear.

Could the nose and profile of high speed trains also be designed to minimise noise, when cruising at high speeds?

Reduced Pantograph Noise

Travelling at up to 360 kph, pantograph noise could be a serious problem.

The only way to cut it down, would be to lower the pantograph in sensitive areas and run the train on battery power.

But if the trains energy consumption could be cut to a much lower level, it might be possible for the cruise to be maintained on battery power alone.

Consider a journey between Euston and Birmingham.

  • The train would accelerate away from Euston and go in a tunnel to Old Oak Common.
  • Batteries could be charged whilst waiting at Euston and in the run to Old Oak Common.
  • Accelerating away from Old Oak Common would bring the train to 360 kph as fast as possible.
  • It would now cruise virtually all the way to Birmingham Interchange at 360 kph.
  • At the appropriate moment the pantograph would be lowered and the train would use the kinetic energy to coast into Birmingham Interchange.
  • There would probably be enough energy in the batteries to take the train into Birmingham Curzon Street station after the stop at Birmingham Interchange.

One technology that will massively improve is the raising and lowering of the pantograph at speed.

So could we see much of the long non-stop intermediate section being run on batteries with the pantograph down. If power is needed, it would raise to power the train directly. If the raising and lowering was efficient, then it might be able to use the pantograph only in tunnels.

Could It Be Possible To Dispence With Wires Outside Of Tunnels?

Probably not on the first phase of High Speed Two, but consider.

  • High Speed Two is designed to have a lot of tunnels.
  • Arup and Birmingham may come up with even better aerodynamic designs.
  • Pantograph raising and lowering will get faster and extremely reliable.
  • Battery technology will hold more electricity for a given weight and volume.
  • Dispensing with visible wires could reduce the problems of getting planning permissions.
  • Noise and visible intrision will be reduced.

I believe there will come a time, when high speed railways could be built without visible overhead electrification.

The only places, where electrification would be used would be in tunnels and stations.

Are There Any Other Applications Of This Research?

These are a few thoughts.

Hitachi Trains For The Midland Main Line

I’m suspicious, that the research or similar research elsewhere, might have already produced a very handy result!

In an article in the October 2019 Edition of Modern Railways, which is entitled EMR Kicks Off New Era, more details of the new Hitachi bi-mode trains for East Midlands Railway (EMR) are given.

This is said.

The first train is required to be available for testing in December 2021 with service entry between April and December 2022.

The EMR bi-modes will be able to run at 125 mph in diesel mode, matching Meridian performance in a step-up from the capabilities of the existing Class 80x units in service with other franchises. They will have 24 metre vehicles (rather than 26 metres), a slightly different nose to the ‘800s’ and ‘802s’, and will have four diesel engines rather than three.

Could the new nose have been designed partly in Birmingham?

Consider.

  • Hitachi’s bi-modes for EMR InterCity could be running at up to 225 kph in a few years.
  • The Midland Main Line between Derby and Chesterfield goes through a number of tunnels in a World Heritage Site.
  • Hitachi have collaborated with UK research teams before, including on the Hyabusa.
  • Hitachi and Bombardier are submitting a joint bid for High Speed Two trains, which is based in Birmingham.

It should be noted that when the Tōkaidō Shinkansen opened in 1964 between Tokyo and Osaka average speed was 210 kph.

So are Hitachi aiming to provide EMR InterCity with almost Shinkansen speeds on a typical UK main line?

Arup and Birmingham University, certainly have the capability to design the perfect nose for such a project.

Aventras

Did the research team also help Bombardier with the aerodynamics of the Aventra?

I’m pretty certain, that somebody did, as these trains seem to have a very low noise signature, as they go past.

Talgo

Tsalgo are building a research centre at Chesterfield.

Will they be tapping in to all the rail research in the Midlands?

Conclusion

It looks to me, that there is some world-class research going on in Birmingham and we’ll all benefit!

October 4, 2019 Posted by | Transport | , , , , , , , , , , | Leave a comment

New Rail Testing Scheme Launched For Small Businesses

The title of this post is the same as that of this article on Rail Technology Magazine.

This is the first two paragraphs.

Businesses in the West Midlands are being offered subsidised access to test and trial facilities as a way to boost railway innovation.

The University of Birmingham has joined forces with Quinton Rail Technology Centre (QRTC) to offer access to the UK’s only privately owned and independent outdoor rail testing and trialling site.

There would appear to be one major condition, companies must be signed up to the DIGI-RAIL program at the Uiversity of Birmingham.

I think this concept is an excellent idea, as often finding a way to test a new product, is the most difficult part of the development process.

But why restrict the process to rail developments?

I have had friends in Cambridge, who have been involved in medical developments.

Finding a route to test their product, often means finding an overseas partner, as much of the NHS and its research partners almost have a policy to exclude, ideas that they didn’t think of.

As someone, who helped fund the successful development of a metered-dose inhaler for asthma drugs, I can honestly say, we would have been greatly helped by a far-sighted agency attached to a reputable University.

 

September 25, 2019 Posted by | Health, Transport | , , | 2 Comments

University Of Birmingham Leases HST For Alternative Fuel Tests

The title of this post is the same as that of this article on Rail Magazine.

This is the first paragraph.

A High Speed Train is being leased by the University of Birmingham to help analyse and test what alternative fuel could be used to power long-distance passenger or freight trains.

It will be interesting to see what results from the research.

A few of my thoughts.

Suitability Of A HST For Research

It must be suitable for research purposes, otherwise the University wouldn’t have obtained the train.

If you look at the Birmingham Centre for Railway Research and Education web site, they list the Research Areas.

  • Railway Control and Operations Simulation
  • Data Integration and Cybersecurity
  • Condition Monitoring and Sensing
  • Centre of Excellence in Digital Systems
  • Power Systems and Energy Use
  • Aerodynamics
  • Climate Change and Weather Impact

There must be a lot of scope for the use of a real train, especially one which has a lot of free space in the engine, where test equipment can be mounted.

Porterbrook’s Interest

I can think of several reasons, why Porterbrook might need to partner with the Research Centre, for sound commercial reasons.

Most will probably seem small in the eyes of the general public, but might be based on Porterbrook’s feedback from customers about their extensive fleet.

Understanding The HST’s Success

The HST or InterCity 125 has been an undoubted success with passengers, drivers, staff and train companies for forty years and understanding the reasons could be invaluable in improving rail transport in the future.

Education

I suspect too that the train will be used to educate students, especially those, who want to work in train or railway design.

When I left Liverpool University with my Control Engineering degree in 1968, I was one of the few, who’d worked on bg heavy machinery in a factory environment.

These days, with Heath and Safety rules much tighter, I doubt, today’s students can gewt the same experience.

Conclusion

I do hope that Porterbrook and the Research Centre, when they look back in a few years, feel that this venture has been a success.

September 21, 2019 Posted by | Transport | , , , , | Leave a comment

A Brief Glimpse Of The Class 799 Train On BBC Breakfast

The Class 799 train is being launched today and BBC Breakfast were there with cameras.

These are my thoughts.

A Test Train

Helen Simpson from Porterbrook, said it was very much a test train.

Seats appear to be in some of the cars.

It looks like Birmingham University have sensibly put the hydrogen drive system in one or both of the two central cars, which in the original Class 319 train were given the designations PMSO and MSOL

The Hydrogen Tanks And Fuel Cell

The hydrogen tanks didn’t appear to be unduly large, which suggests, the the train is not going for a very long rang. But it is only a test train.

The fuel cell was clearly marked from Ballard and was just a large anonymous box. I would think, that it was probably upwards of 100 kW.

It should be noted that the Class 319 train was originally a 1,000 kW train, with a top speed of 100 mph and good acceleration.

I’ll be interested to see what size these components are, when they are published.

The Battery System

The battery did appear to be large, but then these are probably not batteries designed to fit the train, but what is available.

As with the hydrogen tanks and fuel cell, sizes would appear to have been chosen large enough to make sure that the train is not significantly less powerful, than current Class 319 trains.

June 23, 2019 Posted by | Transport | , , , | 1 Comment

Is There Nothing A Class 319 Train Can’t Do?

If a train every goes into orbit round the world, it will be highly-likely that it will be a Class 319 train!

Electric Trains In North-West England

The fleet of eighty-six trains entered service in 1987 on Thameslink  and now twenty-seven are plying their trade on the electrified routes around the North-West of England.

  • You don’t hear many complaints about them being called London’s cast-offs.
  • Passengers fill them up in Blackpool, Liverpool, Manchester and Preston.
  • They still do 100 mph where possible.
  • They seem to be reliable.
  • They are not the most attractive of trains.

But handsome is as handsome does!

Drivers have told me, that although the suspension may be a bit soft for the bumpy route across Chat Moss, the trains do have superb brakes.

Bi-Mode Class 769 Trains

Nearly thirty of the trains are being converted into bi-mode Class 769 trains for working partially-electrifired routes and although these are running late, they should be in service this year.

Rail Operations Group

Two Class 769 trains have been ordered to be fast logistics trains by Rail Operations Group.

Wikipedia says the trains will be used to transport mail.

But if you read the history of the Rail Operations Group, they make the assets sweat and I’ve read the trains will still have seats, so they might do some other rail operations.

The Hydrogen-Powered Class 799 Train 

And now comes the Class 799 train!

This is a demonstrator to prove the concept of conversion to hydrogen power.

The fact that the train now has it’s own number must be of some significance.

Alstom are converting Class 321 trains into Class 321 Breeze trains.

  • The conversion will reduce passenger capacity, due to the large hydrogen tank
  • It will have a 1,000 km range.
  • It will have regenerative breaking.
  • It will have a new AC traction package
  • It will probably have the interior of a Class 321 Renatus train.

The conversion will obviously build on Alstom’s experience with the Alstom Coradia iLint train and Eversholt’s experience with the Renatus.

When it comes to the Class 799 train, the following will apply.

  • Porterbrook have all the experience of creating the bi-mode and dual-voltage Class 769 train.
  • Birmingham University’s Birmingham Centre For Railway Research And Education (BCRRE) are providing the expertise to design and convert the Class 319 train to hydrogen power.
  • I also wouldn’t be surprised to find out, that the BCRRE has applied some very extensive mathematical modelling to find out the performance of a hydrogen-powered Class 319 train.
  • The conversion could be based closely on Class 769 experience and sub-systems,

Could the main purpose be to demonstrate the technology and ascertain the views of train operators and passengers on hydrogen power?

The most important question, is whether the Class 799 train, will have the same passenger capacity as the original Class 319 train?

If it does, then BCRRE must have found a way to store the hydrogen in the roof or under the floor.

It should be noted, that it was only in September 2018, that the contract to develop the Class 799 train was signed and yet less than a year later BCRRE and Porterbrook will be demonstrating the train at a trade show.

This short development time, must mean that there is not enough time to modify the structure of the train to fit a large hydrphen tank inside, as Alstom are proposing.

A smaller hydrogen tank could be placed in one of three places.

  • Underneath the train.
  • On the roof.
  • Inside the train, if it is small enough to fit through the train’s doors.

Note.

  1. I doubt that anybody would put the tank inside the train for perceived safety reasons from passengers.
  2. On the roof, would require substantial structural modifications. Is there enough time?

So how do you reduce the size of the hydrogen tank and still store enough hydrogen in it to give the train a useful range?

In Better Storage Might Give Hydrogen The Edge As Renewable Car Fuel, I indicated technology from Lancaster University, that could store four times as much hydrogen in a given size of tank.

This reduced tank size would make the following possible.

  • The hydrogen tank, the fuel cell and the batteries could be located underneath the four-cars of the Class 319 train.
  • The seating capacity of the Class 799 train could be the same as that of a Class 319 train.

Clever electronics would link everything together.

If BCRRE succeed in their development and produce a working hydrogen-powered Class 799 train, how would the technology be used?

Personally, I don’t think we’ll see too many hydrogen-powered Class 799 trains, running passengers on the UK network.

  • The trains are based on a thirty-year-old train.
  • The interiors are rather utilitarian and would need a lot of improvement, to satisfy what passengers expect.
  • Their market can probably be filled in the short-term by more Class 769 trains.

But I do believe that the technology could be applied to more modern trains.

A Hydrogen-Powered Electrostar

Porterbrook own at least twenty four-car Electrostar trains, which have been built in recent years.

Six Class 387 trains, currently used by c2c, may come off lease in the next few years.

Could these trains be converted into a train with the following specification?

  • Modern train interior, with lots of tables and everything passengers want.
  • No reduction in passenger capacity.
  • 110 mph operating speed using electrification.
  • Useful speed and range on hydrogen power.
  • ERTMS capability, which Porterbrook are fitting to the Class 387 trains to be used by Heathrow Express.

It should be born in mind, that a closely-related Class 379 train proved the concept of a UK battery train.

  • The train was converted by Bombardier.
  • It ran successfully for three months between Manningtree and Harwich.
  • The interior of the train was untouched.

But what was impressive was that the train was converted to battery operation and back to normal operation in a very short time.

This leads me to think, that adding new power sources to an Electrostar, is not a complicated rebuild of the train’s electrical system.

If the smaller hydrogen tank, fuel cell and batteries can be fitted under a Class 319 train, I suspect that fitting them under an Electrostar will be no more difficult.

I believe that once the technology is proven with the Class 799 train, then there is no reason, why later Electrostars couldn’t be converted to hydrogen power.

  • Class 387 trains from c2c, Great Northern and Great Western Railway.
  • Class 379 trains, that will be released from Greater Anglia by new Class 745 trains.
  • Class 377 trains from Southeastern could be released by the new franchise holder.

In addition, some Class 378 trains on the London Overground could be converted for service on the proposed West London Orbital Railway.

A Hydrogen-Powered Aventra

If the Electrostar can be converted, I don’t see why an Aventra couldn’t be fitted with a similar system.

Conclusion

A smaller hydrogen tank, holding hydrogen at a high-density would enable trains to be converted without major structural modifications or reducing the passenger capacity.

The development of a more efficient method of hydrogen storage, would open up the possibilities for the conversion of trains to electric-hydrogen hybrid trains.

 

 

 

 

 

 

 

 

June 13, 2019 Posted by | Transport | , , , , , , , , , , , , | 1 Comment

Ballard Receives Order From Porterbrook for Fuel Cell Module to Power UK HydroFLEX Train

The title of this post is the same as this article on Cision.

The article says that the copy has been provided by Ballard.

This is the first paragraph.

VANCOUVER and DERBY, U.K., Dec. 13, 2018 /CNW/ – Ballard Power Systems (NASDAQ: BLDP; TSX: BLDP) today announced that it has received a purchase order from Porterbrook Leasing Company Limited (“Porterbrook”; http://www.porterbrook.co.uk), a leading participant in the rail leasing market, for an FCveloCity®-HD fuel cell module and related support to power a HydroFLEX train in the U.K.

The article says this about the HydroFLEX train.

The HydroFLEX will be the U.K.’s first fully sized hydrogen demonstrator train. It will showcase how hydrogen can be used to power a train that retains the ability to operate across existing electric routes, on either 3rd rail or 25kV overhead power. Testing and demonstration runs are planned for the summer of 2019 at RailLive, which will take place at Long Marston in Warwickshire.

That sounds like it could be a date for my diary.

Strictly A Demonstrator

In this article on Rail Engineer, which is entitled Hydroflex – The Next Iteration Of The Flex Concept,there is a section entitled Strictly A Demonstrator, from which this was taken.

In response to Rail Engineer’s questions, BCRRE said that the demonstrator version focuses on delivering an electric/hydrogen bi-mode to UK gauge.

So the HydroFLEX is more about research., which I believe is a good route.

  • My feelings on seeing the Alstom Coradia iLint in Germany, was that they had launched too early!
  • Getting a University to run a demonstrator might show up the smaller problems associated with a complex project.
  • Birmingham University may also have access to better mathematics and computing.
  • The interior of the train can be used for test equipment and hydrogen tanks.

I also suspect that a well-designed demonstrator could help with the repurposing of Porterbrook’s extensive fleet, by doing appropriate research.

The Fuel Cell

The Ballard fuel cell is a HD variant of their  FCveloCity family.

This page on the Ballard web site is the data sheet.

  • The fuel cells come in three sizes 60, 85 and 100 kW
  • The largest fuel cell would appear to be around 1.2 m x 1 m x 0.5 m and weigh around 400 Kg.
  • The fuel cell has an associated cooling subsystem, that can provide heat for the train.

It would appear that mounting the fuel cell under the train floor would be a feasible proposition. I would assume that the cell would be placed under one of the driver cars.

If you search the Internet, you’ll find there is a lot of fuel cell companies out there innovating like crazy and fighting for market share.

I don’t think there will be any problem with the fuel cell in the HydroFLEX train.

The Electrical System

The electrical system of the Class 319 train is simple.

  • There is a 750 VDC busbar, which connects to all four cars.
  • The busbar is fed by the 25 KVAC overhead or 750 VDC third-rail electrification.
  • One of the middle cars has the pantograph and the other has four 247.5 kW traction motors, which power the whole train.
  • There is no regenerative braking capability.
  • The two driver cars are only differentiated, by the seats installe by the operator.

It looks to me that this was a sensible piece of 1980s engineering by British Rail to create a low-cost dual-voltage train.

I do wonder, if the originator of this system is still hale and hearty. I suspect they are, as they certainly know how to design for a long life.

When Porterbrook commissioned the Class 769 train, the two diesel generators under the driver cars were connected into this busbar.

They didn’t add any energy storage to the train, although as I said in Brush Traction Signs Contract With Skeleton Technologies For Modules For Class 769 Trains, they have added SkelStart capacitors to start the diesel generators.

Effectively, the Class 769 train is an electric or diesel train, just like the Class 319 train is an overhead or third-rail electrificsation train.

Will the fuel cell of the HydroFLEX train be connected to the electrical system of the train in the same way?

Or will energy storage, we added to the drive train?

In a more advanced design, batteries or capacitors could be in the motored car.

  • They would be charged from the busbar.
  • They would power the traction motors.

If the traction motors, were to be changed to modern ones, that could perform regenerative braking, then this energy could be used to recharge the battery.

The Fuel Tank

I suspect as the train is for research, that a standard off-the-shelf hydrogen tank will be used.

This page on the Fuel Cells And Hydrogen Joint Undertaking, is entitled Improved Hydrogen Tanks For Fuel Cell Cars Of The Future.

This is the first paragraph.

The EU funded COPERNIC project, supported by the Fuel Cells and Hydrogen Joint Undertaking (FCH JU), succeeded in improving the quality of materials and design of hydrogen storage tanks for cars. It also made the manufacturing of these tanks more cost efficient, helping to make hydrogen cars a more viable and competitive option.

I think it is highly likely, that s well-designed hydrogen tank, could probably share the space under the driver car with the fuel cell.

If it can’t then as it’s a research project a few seats can be taken out.

 

 

 

December 16, 2018 Posted by | Transport | , , , , | 1 Comment

UK Hydrogen Train Demonstrator To Be Tested In 2019

The title of this post, is the same as that on this article on Railway Gazette.

This is the first two paragraphs.

A memorandum of understanding for the development of a hydrogen fuel cell demonstrator train was signed by leasing company Porterbrook and the University of Birmingham’s Centre for Railway Research & Education at InnoTrans on September 19.

Porterbrook is to provide an ex-Thameslink Class 319 25 kV 50 Hz/750 V DC third rail electric multiple-unit for the Hydro Flex project. The partners expect it to be equipped with a fuel cell system and ready for demonstration runs in mid-2019. It would retain the ability to use electrical power.

Action is certainly happening in the development of low-emission trains and it appears, that the train leasing companies are taking an active lead.

 

 

September 21, 2018 Posted by | Transport | , , , | 1 Comment

Retrofitted Hydrogen Fuel Cell EMU Concept Presented

The title of this post is the same as that of this article on Global Rail News, that was published in April 2014.

This is the first two paragraphs.

The possibility of retro-fitting diesel multiple units (DMUs) to run on hydrogen fuel cell technology has been put to the test as part of an RSSB and Network Rail-funded innovation research programme.

Fuel Cell Systems, which has worked alongside the University of Birmingham and Hitachi Rail Europe, says the six-month study has demonstrated the feasibility of installing hydrogen fuel cell technology on DMUs as an alternative to electrification.

It strikes me that some serious people are involved in this project.

The report on the project was published in June 2016 and it is stored here on the University pf Birmingham web site.

 

June 26, 2018 Posted by | Transport | , , , | Leave a comment