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This article will explore the advancements in hydrogen
vehicle testing at the Transportation Technology Center
(TTC), including the implementation of a fully operational
hydrogen fueling capability and its impact on rail and other
surface transportation modes.
Hydrogen: A clean and powerful alternative
Hydrogen is a vital alternative fuel for reducing emissions,
particularly when used in fuel cells, which generate electricity
without combustion. Vehicles powered by hydrogen fuel
cells produce no greenhouse gas emissions. When hydrogen
is produced using renewable energy sources like solar or
wind (known as " green hydrogen " ), emissions are minimized
throughout the supply chain.
As an energy carrier, hydrogen has significant advantages.
A ZEMU train.
Photo: Transportation
Technology Center
It is lightweight and possesses the highest specific energy
(energy content per unit of mass) among common fuels.
According to a U.S. Department of Energy fuel properties
comparison, one pound of hydrogen contains the equivalent
energy of 0.4 gallons (approximately 2.8 pounds) of diesel fuel.
However, hydrogen's requirement for large volume, high-pressure
or cryogenic storage tanks reduces its advantage for
smaller vehicles. Yet, for larger and heavier machinery, such
as railway vehicles, these specialized storage requirements
are more manageable.
Hydrogen-powered rail:
The ZEMU train by Stadler
Since 2018, hydrogen-powered trains
have operated in Germany and have
undergone trials in other European
countries. In 2019, Stadler US Inc., a
U.S. subsidiary of Swiss train manufacturer
Stadler Rail, received a contract
from the San Bernardino County
Transportation Authority (SBCTA) to
deliver the first hydrogen-powered train
in the U.S. This train, known as the Zero
Emission Multiple Unit (ZEMU), employs
a combination of hydrogen fuel
cells and batteries for propulsion. By
combining hydrogen with oxygen in
on-board fuel cells, the train generates
electricity, emitting only purified water
and heat. When using green hydrogen,
the entire system can achieve zero carbon
emissions.
Photo:

septemberoctober2024

Table of Contents for the Digital Edition of septemberoctober2024

Guest Opinion – From Data to Trust: Keolis' People-centered Approach to Operational Excellence
People & Places
Guest Optimization: Optimizing transit fleet electrification with advanced battery management
Hydrogen Vehicle Testing at Transportation Technology Center
Innovative Student Design Shapes Future of DART's Next Generation Bus Shelters
50 Years of Mass Transit Timeline
Bay Area Transit Agencies and the 'Big Sync'
Products – In Focus: Vehicle Interior
Best Practices: 3 Ways Unification and Digital Workflows can Break Down Silos
septemberoctober2024 - 1
septemberoctober2024 - 2
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septemberoctober2024 - 4
septemberoctober2024 - 5
septemberoctober2024 - Guest Opinion – From Data to Trust: Keolis' People-centered Approach to Operational Excellence
septemberoctober2024 - 7
septemberoctober2024 - 8
septemberoctober2024 - 9
septemberoctober2024 - People & Places
septemberoctober2024 - 11
septemberoctober2024 - 12
septemberoctober2024 - 13
septemberoctober2024 - 14
septemberoctober2024 - 15
septemberoctober2024 - 16
septemberoctober2024 - 17
septemberoctober2024 - Guest Optimization: Optimizing transit fleet electrification with advanced battery management
septemberoctober2024 - 19
septemberoctober2024 - Hydrogen Vehicle Testing at Transportation Technology Center
septemberoctober2024 - 21
septemberoctober2024 - 22
septemberoctober2024 - 23
septemberoctober2024 - 24
septemberoctober2024 - 25
septemberoctober2024 - Innovative Student Design Shapes Future of DART's Next Generation Bus Shelters
septemberoctober2024 - 27
septemberoctober2024 - 28
septemberoctober2024 - 29
septemberoctober2024 - 50 Years of Mass Transit Timeline
septemberoctober2024 - 31
septemberoctober2024 - 32
septemberoctober2024 - 33
septemberoctober2024 - Bay Area Transit Agencies and the 'Big Sync'
septemberoctober2024 - 35
septemberoctober2024 - 36
septemberoctober2024 - 37
septemberoctober2024 - 38
septemberoctober2024 - 39
septemberoctober2024 - Products – In Focus: Vehicle Interior
septemberoctober2024 - 41
septemberoctober2024 - Best Practices: 3 Ways Unification and Digital Workflows can Break Down Silos
septemberoctober2024 - 43
septemberoctober2024 - 44
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