Hydrogen's role in an uncertain energy future

Moriarty, Patrick; Honnery, Damon

doi:10.1016/j.ijhydene.2008.10.060

Cited by 215 publications

(73 citation statements)

References 38 publications

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“…Table 4. Global primary energy use in exajoules (EJ), 1970-2006 (adapted from Goosen et al [13] and Moriarty and Honnery [185]. In describing national or global energy budgets, it is common practice to use large-scale units based upon the joule; 1 EJ = 10 18 J.…”

Section: Market Potential Process Selection and Risk Managementmentioning

confidence: 99%

Renewable energy-driven desalination technologies: A comprehensive review on challenges and potential applications of integrated systems

et al. 2015

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Despite the tremendous improvements in conventional desalination technologies, its wide use is still limited due primarily to high energy requirements which are currently met with expensive fossil fuels. The use of alternative energy sources is essential to meet the growing demand for water desalination. In the last few decades a lot of effort has being directed in the use of different renewable energy (RE) sources to run desalination processes. However, the expansion of these efforts towards larger scale plants is hampered by several techno-economic challenges. Several medium-scale RE-driven desalination plants have been installed worldwide. Nevertheless, most of these plants are connected to the electrical grid to assure a continuous energy supply for stable operation. Furthermore, RE is mostly used to produce electric power which can be used to run desalination systems. This review paper focusses on an integrated approach in using RE-driven with an emphasis on solar and geothermal desalination technologies. Innovative and sustainable desalination processes which are suitable for integrated RE systems are presented. An assessment of the benefits of these technologies and their limitations are also discussed.

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Section: Market Potential Process Selection and Risk Managementmentioning

confidence: 99%

Renewable energy-driven desalination technologies: A comprehensive review on challenges and potential applications of integrated systems

et al. 2015

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“…Hydrogen is probably an ultimately vital energy carrier for the future, where fossil fuels are expected to be scarce [1][2][3]. While there are exciting possibilities in the manufacture of hydrogen from renewable sources, primarily water and biomass, there are also non-electrochemical pathways to achieve hydrogen production, notably by the use of cyclic pathways that can tap into very high quality heat, available in nuclear power plants.…”

Section: Introductionmentioning

confidence: 99%

Catalytic performance of bimetallic Ni-Pt nanoparticles supported on activated carbon, gamma-alumina, zirconia, and ceria for hydrogen production in sulfur-iodine thermochemical cycle

Singhania

Krishnan

Bhaskarwar

et al. 2016

International Journal of Hydrogen Energy

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Bimetallic Ni-Pt nanoparticles supported on four different supports (activated carbon (AC)) 1 , γ-alumina, zirconia, and ceria) were prepared by modified impregnation-reduction technique for decomposition of hydrogen iodide to hydrogen and iodine, in the thermochemical water-splitting sulfur-iodine (SI) cycle. The catalysts were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) method to find their structure, morphology, and surface area, respectively. High metal dispersions (Ni-Pt) were obtained with particle sizes of the order of 10 nm or lesser, in the high-surface-area supports. The hydrogen iodide-decomposition results showed the following catalytic activity order of Ni-Pt nanoparticles on different supports: Ni(2.5%)-Pt(2.5%)/AC > Ni(2.5%)-Pt(2.5%)/γ-alumina > Ni(2.5%)-Pt(2.5%)/Zirconia > Ni(2.5%)-Pt(2.5%)/Ceria. Bimetallic Ni(2.5%)-Pt(2.5%)/AC also showed excellent stability for 100 h in the hydrogen iodide-decomposition reaction, and with a higher performance relative to the corresponding Pt supported catalyst under the same operating conditions.

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“…New strategies such as low carbon fuel options, revolutionary combustion engine designs and exhaust after-treatment systems are required to meet these challenges [7][8][9][10]. Utilisation of low carbon fuel options such as high hydrogen content (HHC) syngas fuel is important to the clean combustion technology [11][12][13][14][15]. In particular, burning issues of lean premixed combustion of HHC hydrogen-carbon monoxide (H2/CO) syngas fuel at elevated pressures have received considerable attention in recent years [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effects of pressure on cellular flame structure of high hydrogen content lean premixed syngas spherical flames: A DNS study

Dinesh

Shalaby

Luo

et al. 2016

International Journal of Hydrogen Energy

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2016). Effects of pressure on cellular flame structure of high hydrogen content lean premixed syngas spherical flames: A DNS study. International Journal of Hydrogen Energy, 41(46), 21516-21531. DOI: 10.1016/j.ijhydene.2016 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. The joint probability density functions of OH radical mass fraction and temperature show broadening OH values in the high temperature zone at elevated pressures compared to its distribution at the atmospheric pressure. Comparisons of mean species distributions of 3 OH and HO2 over temperature between laminar and turbulent flames show that pressure elevation has a major influence on the flame structure in the composition space.

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Hydrogen's role in an uncertain energy future

Cited by 215 publications

References 38 publications

Renewable energy-driven desalination technologies: A comprehensive review on challenges and potential applications of integrated systems

Renewable energy-driven desalination technologies: A comprehensive review on challenges and potential applications of integrated systems

Catalytic performance of bimetallic Ni-Pt nanoparticles supported on activated carbon, gamma-alumina, zirconia, and ceria for hydrogen production in sulfur-iodine thermochemical cycle

Effects of pressure on cellular flame structure of high hydrogen content lean premixed syngas spherical flames: A DNS study

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