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Keyword: Hydrogen
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Proceedings Papers

Proc. ASME. ES2013, ASME 2013 7th International Conference on Energy Sustainability, V001T10A006, July 14–19, 2013
Paper No: ES2013-18403
... In this study we have developed a unique method for synthesizing very reactive water splitting materials that will remain stable at temperatures as high as 1450 °C to efficiently produce clean hydrogen from concentrated solar energy. The hydrogen production for a laboratory scale reactor using a...
Proceedings Papers

Proc. ASME. ES2011, ASME 2011 5th International Conference on Energy Sustainability, Parts A, B, and C, 903-916, August 7–10, 2011
Paper No: ES2011-54752
... competitiveness within the refining sector as well as the unpredictable oil prices. Furthermore, environmental obligations also have been recently advocating low emission rates that may entail additional operating costs to refineries. In this study, we analyze hydrogen production and utilization in the U.S. oil...
Proceedings Papers

Proc. ASME. ES2011, ASME 2011 5th International Conference on Energy Sustainability, Parts A, B, and C, 1595-1605, August 7–10, 2011
Paper No: ES2011-54193
... A two-step thermochemical cycle for hydrogen production using mixed iron oxides coated on silicon carbide substrates has been investigated. The water-splitting step proceeds at temperatures between 800 and 1000 °C while for the regeneration step temperatures around 1200 °C are needed. A...
Topics: Cycles, Iron, Water
Proceedings Papers

Proc. ASME. ES2010, ASME 2010 4th International Conference on Energy Sustainability, Volume 2, 143-152, May 17–22, 2010
Paper No: ES2010-90326
... With the increasing concern of CO 2 emissions and climate change, efforts have grown to include solar technologies in chemical processes to manufacture products that can be used both as a commodity and as a fuel, such as hydrogen. This study focuses on a technique, referred to as “solar...
Proceedings Papers

Proc. ASME. ES2010, ASME 2010 4th International Conference on Energy Sustainability, Volume 1, 265-272, May 17–22, 2010
Paper No: ES2010-90341
... — of large geographic extent and high intensity — are stranded: far from end-users with inadequate or nonexistent gathering and transmission systems to deliver the energy. Electricity energy storage cannot affordably firm large, intermittent renewables at annual scale, while gaseous hydrogen (GH2) and...
Proceedings Papers

Proc. ASME. ES2010, ASME 2010 4th International Conference on Energy Sustainability, Volume 1, 241-254, May 17–22, 2010
Paper No: ES2010-90323
... This paper presents a thermo-economic assessment of three different hydrogen production processes using fossil fuels as feedstock. First, the paper provides process-step level energy and cost analysis for the solar reforming of natural gas. The same analysis is given for the solar cracking of...
Proceedings Papers

Proc. ASME. ES2010, ASME 2010 4th International Conference on Energy Sustainability, Volume 1, 255-263, May 17–22, 2010
Paper No: ES2010-90324
... deposition inside the vortex-flow reactor. Our results have shown that hydrogen is a better screening gas than argon. 10 01 2011 Solar cracking RTD Solar reactor Hydrogen CFD Vortex 1 Copyright © 2010 by ASME Proceedings of the ASME 4th International Conference on Energy...
Proceedings Papers

Proc. ASME. ES2009, ASME 2009 3rd International Conference on Energy Sustainability, Volume 1, 335-340, July 19–23, 2009
Paper No: ES2009-90365
... This research presents an approach for modeling and control of a hydrogen production plant based in steam reforming of methane (SRM). Many studies in the literature have established some important hydrogen production plant information related to sizing and optimization. This research shows a...
Proceedings Papers

Proc. ASME. ES2009, ASME 2009 3rd International Conference on Energy Sustainability, Volume 1, 295-304, July 19–23, 2009
Paper No: ES2009-90273
... The transient thermal behavior of two solar receiver-reactors for hydrogen production has been modeled using Modelica/Dymola. The simulated reactors are dedicated to carry out the same chemical reactions but represent two different development stages of the project HYDROSOL and two different...
Proceedings Papers

Proc. ASME. ES2009, ASME 2009 3rd International Conference on Energy Sustainability, Volume 1, 97-103, July 19–23, 2009
Paper No: ES2009-90056
... Biomass gasification process is simulated in order to determine the influence of the operating parameters on the quality of the gas produced. Furthermore, the hydrogen required to enrich the syngas is also established. The modeling and simulation showed that the gas obtained by gasification at...
Proceedings Papers

Proc. ASME. ES2008, ASME 2008 2nd International Conference on Energy Sustainability, Volume 1, 525-535, August 10–14, 2008
Paper No: ES2008-54171
... based thermochemical cycles for solar production of hydrogen from water. After proof-of-principle a modified design of the reactor was applied. A separated chamber for the evaporation of the sulfuric acid, which is the precursor of sulfur trioxide in the mentioned thermochemical cycles, a higher mass...
Proceedings Papers

Proc. ASME. ES2008, ASME 2008 2nd International Conference on Energy Sustainability, Volume 1, 331-338, August 10–14, 2008
Paper No: ES2008-54121
... This paper gives a representative energy process-step model of hydrogen production in the U.S. Chemical Industry based on federal data. There have been prior efforts to create energy process-step models for other industries. However, among all manufacturing industries, creating energy flow...
Proceedings Papers

Proc. ASME. ES2008, ASME 2008 2nd International Conference on Energy Sustainability, Volume 1, 507-515, August 10–14, 2008
Paper No: ES2008-54328
... In this paper, the potential benefits and technical advantages of using ammonia as a green fuel for transportation are analyzed based on performance indicators including the system effectiveness, the driving range, fuel tank compactness, and the cost of driving per km. Similar to hydrogen...
Proceedings Papers

Proc. ASME. ES2008, ASME 2008 2nd International Conference on Energy Sustainability, Volume 1, 517-524, August 10–14, 2008
Paper No: ES2008-54031
... The aim of this work is to reduce the refueling time of a metal hydride storage tank by improving its design, taking in account the total volumetric and mass capacity of the tank. A heat and mass transfer model is proposed and solved to obtain the charging curve for 1 kg hydrogen in a LaNi 5...
Proceedings Papers

Proc. ASME. ES2007, ASME 2007 Energy Sustainability Conference, 25-29, July 27–30, 2007
Paper No: ES2007-36098
... UT-3 thermochemical hydrogen production cycle has been studied, both theoretically and experimentally, and is one of the very few cycles studied on a pilot plant scale. The maximum operating temperature in this cycle is relatively lower than the temperatures in other cycles. Another advantage of...
Proceedings Papers

Proc. ASME. ES2007, ASME 2007 Energy Sustainability Conference, 47-57, July 27–30, 2007
Paper No: ES2007-36259
... combination with a gas turbine cycle are presented. 26 02 2009 solid oxide fuel cell energy exergy efficiency hydrogen electricity fuel cell Proceedings of ASME2007 Energy Sustainability 2007 June 27-30, 2007, Long Beach, California, USA L L F o pp o O se gas turbine cycle integrated...