Hydrogen as a Clean Energy Carrier

Removing Barriers to Large-Scale Hydrogen Distribution

In 2013 more than half of the carbon monoxide and approximately twenty-five percent of the hydrocarbons emitted around the world resulted from the use of fossil fuels for transportation. In an attempt to decrease pollutants resulting from the use of fossil fuels, the International Energy Agency has published a goal of reducing the United States’ oil consumption by 29% between 2007 and 2030. Sixty percent of this reduction is to come from transportation, while the remainder is to result from alternative energy production and home heating methods. Hydrogen is envisioned to play a key role as an energy carrier for future clean transportation and energy production schemes. The primary barrier to the use of hydrogen as an energy carrier is the lack of large-scale hydrogen transportation and distribution systems. These hydrogen transportation networks will require considerable funding to engineer and install. While steel pipeline is the most economical means to transport gaseous hydrogen, it has been found that hydrogen has deleterious effects upon the quasi-static, fatigue, and fracture properties of carbon steels. This talk will focus on joint U.S. Departments of Transportation, Energy, and Commerce research being conducted to model the effects of hydrogen on pipeline steels in order to mitigate risk and minimize pipeline installation costs. This work has informed the ASME code body responsible for hydrogen pipeline engineering and installation, and ultimately led to a code modification that could result in a savings of $1M/mile of installed pipeline.

Dr. Robert Amaro, Colorado School of Mines

Presented October 28, 2016

About the Presenter

Dr. Robert Amaro is a Teaching Associate Professor in Mechanical Engineering at Colorado School of Mines. His teaching focuses on mechanical design and all things related to Mechanics of Materials. His research focuses on environmental-fatigue mechanisms in metals. Prior research topics have included computational and numerical modeling of thermo-mechanical fatigue of Ni-base superalloys for aero-turbine use, creep-fatigue of steels and Ni-base superalloys, ductile fracture, and hydrogen-assisted fatigue crack growth in metal alloys. Current primary research efforts include the creation of a physics-based model that couples microstructural features of steels with hydrogen diffusion, hydrogen accumulation, hydrogen-deformation interaction, and hydrogen assisted fatigue crack growth. Robert received his M.S. and Ph.D. degrees in mechanical engineering, with a focus on materials performance, from the Georgia Institute of Technology. Prior to receiving his PhD Robert worked for over ten years in industry as a design engineer, including two years as co-owner of an engineering firm.